Navien NFC-250/200H - Condensing Combi-Boiler - 199,900 BTU DHW / 210,000 BTU HTG

The Navien NFC-250/200H is a high-efficiency condensing combi-boiler that combines space heating and domestic hot water production in a single compact unit. It delivers 95% AFUE efficiency and is Energy Star certified. The unit features a 15:1 turndown ratio for both heating and domestic hot water, ensuring precise temperature control and energy savings. Equipped with a new domestic hot water module with mixing and water adjustment valves, it provides consistent, comfortable hot water. Advanced controls with an intuitive interface and Setup Wizard simplify installation and operation, while built-in powered connections support up to three zone valves or pumps.

This boiler supports flexible venting options with 2" pipe runs up to 65 feet and 3" runs up to 150 feet. Its patented stainless steel fire tube heat exchanger and non-metallic condensate base ensure durability and reliability. The NFC-250/200H is approved for high altitude installations up to 10,100 feet on natural gas and propane, with conversion kits included. It can be common vented with up to seven NPE units or cascaded with up to fifteen units, allowing easy capacity expansion for larger heating demands.

Features

• 95% AFUE efficiency, Energy Star certified
• 15:1 turndown ratio for heating and DHW
• New DHW module with mixing and water adjustment valves
• Advanced controls with Setup Wizard
• Built-in powered connections for 3 zone valves or pumps
• Venting: 2" up to 65 feet, 3" up to 150 feet
• Patented stainless steel fire tube heat exchanger
• Non-metallic condensate base
• High altitude approval up to 10,100 ft (NG and LP) with conversion kits
• Common venting up to 7 NPE units; cascading up to 15 units

Applications

• Residential and light commercial space heating
• Domestic hot water supply for multiple fixtures
• Multi-zone hydronic heating systems
• High altitude installations
• Cascade boiler setups for increased capacity

Related Video: NFC-H Condensing Fire Tube Combi-Boiler

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Navien NCB-240/110H - Condensing Combi-Boiler - 199,000 BTU DHW / 110,000 BTU HTG

The Navien NCB-240/110H is a 95% AFUE condensing combi-boiler designed to deliver both space heating and domestic hot water in one high-performance, wall-mounted unit. With a maximum heating input of 110,000 BTU/hr and up to 199,000 BTU/hr for DHW, it efficiently meets the demands of larger homes or applications with simultaneous heating and hot water needs.

This combi-boiler operates on natural gas or propane and includes advanced features such as dual stainless steel heat exchangers, a smart control interface, and built-in zone pump and valve terminals. With turndown ratios of 8.5:1 for space heating and 15:1 for hot water, the NCB-240/110H adapts efficiently to fluctuating usage demands, reducing wear and energy waste.

Features:

• 95% AFUE high-efficiency rating
• 110,000 BTU/hr heating input
• Up to 199,000 BTU/hr DHW input
• 8.5:1 turndown ratio for heating
• 15:1 turndown ratio for domestic hot water
• Smart controls with backlit LCD and Setup Wizard
• Dual stainless steel heat exchangers
• Field convertible between natural gas and propane
• Built-in zone pump and zone valve connections
• Compact, wall-hung design with quiet operation
• Supports 2" or 3" direct venting

Applications:

• Residential space heating and hot water
• Homes with simultaneous multi-fixture usage
• Natural gas or propane fuel systems
• Installations requiring compact, high-efficiency units
• New construction or retrofit boiler replacements
• Indoor wall-mounted applications with venting flexibility

Aim high with Navien...

High efficiency, High output, High performance, all in one compact combi

• Highest DHW maximum BTU’s in residential combi-boilers...up to 210,000 per hour
• Highest DHW flow rate @ 70°F rise...up to 5.4 GPM
• Highest number of BTU sizes for the North American residential combi-boiler market
• Highest residential combi DHW TDR...15:1 for all models
• Highest residential combi heating TDR... up to 11:1
• Highest number of built-in zone controls for valves or pumps... up to three
• Highest full lineup 2" PVC venting lengths... up to 65 feet
• Highest number of cascade capable units with NPE tankless water heaters... up to 15
• High altitude certification... up to 10,100 feet (NG or LP)
• Lowest minimum fire BTU for residential combi-boilers... as low as 10,700

New Navien NCB-H...the complete combi package and no comprimises

Navien's innovation and technological advancements have done it again. The new NCB-H is taking combi performance to the highest levels. As the competition tries to get closer, Navien ingenuity keeps advancing their lead.

COMPARE these advantages and see why NCB-H combis are the right fit for small and large homes

Dual Stainless Steel Heat Exchanger Designed for exceptional heating performance and longevity Heating up to 150,000 BTUs per hour

Built-in DHW module now with
higher performance
Navien’s NCB-H generates enough hot water to run up to 3 showers and a dishwasher at the same time.

Expanded DHW Capability

For increased domestic hot water flow demand, the NCB-H can be cascaded and common vented with up to 15 NPE tankless water heaters

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Navien NCB-240/130H - Condensing Combi-Boiler - 199,000 BTU DHW / 130,000 BTU HTG

The Navien NCB-240/130H is a high-efficiency, 95% AFUE condensing combi-boiler that delivers both space heating and domestic hot water in a single wall-hung unit. Designed for performance and convenience, it features a maximum heating input of 130,000 BTU/hr and a DHW input of up to 199,000 BTU/hr. The unit supports both natural gas and propane, with field conversion included, and offers flexible venting options using 2" or 3" PVC, CPVC, polypropylene, or stainless steel.

The NCB-240/130H includes dual stainless steel heat exchangers, integrated smart controls with an LCD display, and built-in support for three heating zones. With advanced turndown ratios and Energy Star certification, it's engineered to optimize energy use while maintaining consistent comfort in residential heating applications.

Features:

• 95% AFUE efficiency rating
• 130,000 BTU/hr heating input
• 199,000 BTU/hr DHW input
• Dual stainless steel heat exchangers
• 10:1 heating turndown ratio
• 15:1 domestic hot water turndown ratio
• Smart controls with LCD display and setup wizard
• Integrated 3-zone controller for zone valves or circulators
• Field convertible from natural gas to propane (kit included)
• Compact wall-hung design
• Energy Star certified
• Built-in freeze protection and advanced safety controls
• Supports cascading with up to 15 NPE units

Applications:

• Whole-home heating and on-demand hot water
• Residential homes using natural gas or propane
• Indoor wall-mounted installations
• Projects requiring high-efficiency boiler systems
• Smart home setups using Navien controls
• Systems needing multi-zone heating integration

Aim high with Navien...

High efficiency, High output, High performance, all in one compact combi

• Highest DHW maximum BTU’s in residential combi-boilers...up to 210,000 per hour
• Highest DHW flow rate @ 70°F rise...up to 5.4 GPM
• Highest number of BTU sizes for the North American residential combi-boiler market
• Highest residential combi DHW TDR...15:1 for all models
• Highest residential combi heating TDR... up to 11:1
• Highest number of built-in zone controls for valves or pumps... up to three
• Highest full lineup 2" PVC venting lengths... up to 65 feet
• Highest number of cascade capable units with NPE tankless water heaters... up to 15
• High altitude certification... up to 10,100 feet (NG or LP)
• Lowest minimum fire BTU for residential combi-boilers... as low as 10,700

New Navien NCB-H...the complete combi package and no comprimises

Navien's innovation and technological advancements have done it again. The new NCB-H is taking combi performance to the highest levels. As the competition tries to get closer, Navien ingenuity keeps advancing their lead.

COMPARE these advantages and see why NCB-H combis are the right fit for small and large homes

Dual Stainless Steel Heat Exchanger Designed for exceptional heating performance and longevity Heating up to 150,000 BTUs per hour

Built-in DHW module now with
higher performance
Navien’s NCB-H generates enough hot water to run up to 3 showers and a dishwasher at the same time.

Expanded DHW Capability

For increased domestic hot water flow demand, the NCB-H can be cascaded and common vented with up to 15 NPE tankless water heaters

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Navien NCB-250/150H - Condensing Combi-Boiler - 250,000 BTU DHW / 210,000 BTU HTG

The Navien NCB-250/150H is a 95% AFUE condensing combi-boiler that combines powerful space heating and on-demand domestic hot water in a single wall-hung unit. With a maximum input of 150,000 BTU/hr and a net AHRI rating of 120,000 BTU/hr, this unit delivers efficient performance for larger residential applications. It offers a 11.1:1 turndown ratio for heating and a 15:1 ratio for hot water, providing responsive modulation based on system demand.

The NCB-250/150H is field convertible from natural gas to propane and supports a range of venting materials including PVC, CPVC, polypropylene, and stainless steel. It also features compatibility with Navien’s NaviLink smart home controller for remote access and monitoring.

Features:

• 95% AFUE high-efficiency rating
• 150,000 BTU/hr heating input
• 120,000 BTU/hr net AHRI rating
• 11.1:1 turndown ratio for space heating
• 15:1 turndown ratio for domestic hot water
• Field convertible between natural gas and propane
• Smart controls with NaviLink compatibility
• Energy Star certified
• Compact wall-mounted design
• Compatible with 2" or 3" venting (PVC, CPVC, polypropylene, stainless steel)

Applications:

• Whole-home space heating and domestic hot water
• Medium to large residential homes
• Indoor installations with venting flexibility
• Natural gas or propane systems
• Retrofits and new construction
• Smart home integration with NaviLink controller

Aim high with Navien...

High efficiency, High output, High performance, all in one compact combi

• Highest DHW maximum BTU’s in residential combi-boilers...up to 210,000 per hour
• Highest DHW flow rate @ 70°F rise...up to 5.4 GPM
• Highest number of BTU sizes for the North American residential combi-boiler market
• Highest residential combi DHW TDR...15:1 for all models
• Highest residential combi heating TDR... up to 11:1
• Highest number of built-in zone controls for valves or pumps... up to three
• Highest full lineup 2" PVC venting lengths... up to 65 feet
• Highest number of cascade capable units with NPE tankless water heaters... up to 15
• High altitude certification... up to 10,100 feet (NG or LP)
• Lowest minimum fire BTU for residential combi-boilers... as low as 10,700

New Navien NCB-H...the complete combi package and no comprimises

Navien's innovation and technological advancements have done it again. The new NCB-H is taking combi performance to the highest levels. As the competition tries to get closer, Navien ingenuity keeps advancing their lead.

COMPARE these advantages and see why NCB-H combis are the right fit for small and large homes

Dual Stainless Steel Heat Exchanger Designed for exceptional heating performance and longevity Heating up to 150,000 BTUs per hour

Built-in DHW module now with
higher performance
Navien’s NCB-H generates enough hot water to run up to 3 showers and a dishwasher at the same time.

Expanded DHW Capability

For increased domestic hot water flow demand, the NCB-H can be cascaded and common vented with up to 15 NPE tankless water heaters

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Navien NCB-190/080H - Condensing Combi-Boiler - 160,000 BTU DHW / 80,000 BTU HTG 

The Navien NCB-190/080H is a high-efficiency condensing combi-boiler that delivers both hydronic space heating and domestic hot water from a single, compact wall-hung unit. With a 95% AFUE rating and up to 80,000 BTU/hr heating input, it provides consistent warmth and efficiency for a wide range of home sizes. The domestic hot water system delivers up to 160,000 BTU/hr with a 15:1 turndown ratio and 4.3 GPM flow rate at a 37°C rise, supporting simultaneous use across multiple fixtures.

Constructed with dual stainless steel heat exchangers for long-term durability and corrosion resistance, the NCB-190/080H is equipped with smart control features, built-in pumps, and field conversion capability between natural gas and propane. It supports cascading and common venting with NPE water heaters, making it an adaptable solution for residential heating and hot water needs.

Features:

• 95% AFUE energy efficiency
• 160,000 BTU/hr DHW input and 80,000 BTU/hr heating input
• Dual stainless steel heat exchangers
• 15:1 DHW turndown ratio
• Smart control with Setup Wizard and backlit LCD
• Built-in zone pumps and zone valve terminals
• Compatible with cascading and common venting setups
• Field convertible for natural gas or propane
• Compact wall-hung design
• Flexible 2" or 3" venting options

Applications:

• Whole-house hydronic space heating
• On-demand domestic hot water
• Homes using natural gas or propane
• New construction or system replacements
• Residences requiring compact, wall-mounted heating solutions
• Installations requiring energy-efficient and low-maintenance operation

Aim high with Navien...

High efficiency, High output, High performance, all in one compact combi

• Highest DHW maximum BTU’s in residential combi-boilers...up to 210,000 per hour
• Highest DHW flow rate @ 70°F rise...up to 5.4 GPM
• Highest number of BTU sizes for the North American residential combi-boiler market
• Highest residential combi DHW TDR...15:1 for all models
• Highest residential combi heating TDR... up to 11:1
• Highest number of built-in zone controls for valves or pumps... up to three
• Highest full lineup 2" PVC venting lengths... up to 65 feet
• Highest number of cascade capable units with NPE tankless water heaters... up to 15
• High altitude certification... up to 10,100 feet (NG or LP)
• Lowest minimum fire BTU for residential combi-boilers... as low as 10,700

New Navien NCB-H...the complete combi package and no comprimises

Navien's innovation and technological advancements have done it again. The new NCB-H is taking combi performance to the highest levels. As the competition tries to get closer, Navien ingenuity keeps advancing their lead.

COMPARE these advantages and see why NCB-H combis are the right fit for small and large homes

Dual Stainless Steel Heat Exchanger Designed for exceptional heating performance and longevity Heating up to 150,000 BTUs per hour

Built-in DHW module now with
higher performance
Navien’s NCB-H generates enough hot water to run up to 3 showers and a dishwasher at the same time.

Expanded DHW Capability

For increased domestic hot water flow demand, the NCB-H can be cascaded and common vented with up to 15 NPE tankless water heaters

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Navien NPE-180A2 – Condensing Tankless Water Heater – 150,000 BTU

Navien NPE-A2 simply a smarter hot water system for today’s life styles

Navien…the proven leader in condensing tankless, makes it even easier to install and set up with the new NPE-A2 series

Built-in recirculation system Navien’s patented ComfortFlow® system is the first to include a buffer tank, recirculation pump and fine-tuned controls into a tankless water heater, resolving the cold-water sandwich effect* and issues of minimal flow rates commonly found in other tankless water heaters. * The “cold-water sandwich effect” is the undesired introduction of cold water into the hot water supply line on occasions of frequent on/off operations. (Measure Guideline : Transitioning to a Tankless Water heater, DOE, Sept.2012).

The built-in recirculation pump allows the NPE-A2 to recirculate water either through an external recirc line or through existing supply lines while using NaviCirc®, without the need for external pumps or controls.

Multi-line control with built-in intuitive software  Navien’s new backlit EZNav™ control panel uses simple text and icons to make set up, operation status and troubleshooting faster and easier than ever before. Self-diagnostics. Displays temperature and water flow rate. Displays status of cascade operation. Convertible display from °F to °C. User Friendly Interface. Easy setup.

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Navien NCB-190/060H - Condensing Combi-Boiler - 160,000 BTU DHW / 60,000 BTU HTG

The Navien NCB-190/060H is a high-efficiency condensing combi-boiler that delivers both space heating and domestic hot water in one compact unit. With a 95% AFUE rating and a 15:1 turndown ratio for DHW, this boiler provides precise performance and significant energy savings. It features dual stainless steel heat exchangers, built-in controls, and flexible venting options. The unit is field convertible for use with natural gas or propane and is suitable for small to large homes, capable of supporting up to three showers and a dishwasher simultaneously.

Specifications:

• DHW Input: 10,000 to 160,000 BTU/hr
• Heating Input: 60,000 BTU/hr
• AFUE: 95%
• Flow Rate: 4.1 GPM at 70°F rise
• Venting: 2" up to 65 ft or 3" up to 150 ft (PVC, CPVC, or polypropylene)
• Dimensions: 17.3" W x 12.8" D x 29.3" H
• Weight: 88.2 lbs
• Gas Type: Field convertible (natural gas or propane)
• Controls: LCD display with Setup Wizard
• Built-in: Pumps and connections for 3 zone pumps and 3 zone valves

Applications:

• Space heating and domestic hot water for residential homes
• Compatible with cascade and common venting configurations using NPE water heaters

Aim high with Navien...

High efficiency, High output, High performance, all in one compact combi

• Highest DHW maximum BTU’s in residential combi-boilers...up to 210,000 per hour
• Highest DHW flow rate @ 70°F rise...up to 5.4 GPM
• Highest number of BTU sizes for the North American residential combi-boiler market
• Highest residential combi DHW TDR...15:1 for all models
• Highest residential combi heating TDR... up to 11:1
• Highest number of built-in zone controls for valves or pumps... up to three
• Highest full lineup 2" PVC venting lengths... up to 65 feet
• Highest number of cascade capable units with NPE tankless water heaters... up to 15
• High altitude certification... up to 10,100 feet (NG or LP)
• Lowest minimum fire BTU for residential combi-boilers... as low as 10,700

New Navien NCB-H...the complete combi package and no comprimises

Navien's innovation and technological advancements have done it again. The new NCB-H is taking combi performance to the highest levels. As the competition tries to get closer, Navien ingenuity keeps advancing their lead.

COMPARE these advantages and see why NCB-H combis are the right fit for small and large homes

Dual Stainless Steel Heat Exchanger Designed for exceptional heating performance and longevity Heating up to 150,000 BTUs per hour

Built-in DHW module now with
higher performance
Navien’s NCB-H generates enough hot water to run up to 3 showers and a dishwasher at the same time.

Expanded DHW Capability

For increased domestic hot water flow demand, the NCB-H can be cascaded and common vented with up to 15 NPE tankless water heaters

^ZNS

Navien NPE-180S2 – Condensing Tankless Water Heater – 150,000 BTU

The Navien NPE-180S2 is a high-efficiency condensing tankless water heater built to provide continuous hot water for residential homes. With an input range of 15,000 to 150,000 BTU per hour and a Uniform Energy Factor of 0.96, this unit is Energy Star certified and delivers reliable performance with reduced energy costs. It supports flow rates up to 8.4 gallons per minute at a 35°F rise, making it well-suited for homes with multiple bathrooms or simultaneous hot water needs.

Engineered with dual stainless steel heat exchangers for enhanced durability and ultra condensing performance, the NPE-180S2 is designed for indoor or outdoor wall-hung installation. It includes the EZNav™ multi-line control panel with integrated HotButton™ control and supports cascading with up to 32 units using Navien’s Ready-Link system. Approved for direct venting, it supports 2″ venting up to 60 feet and 1/2″ gas line capability up to 24 feet, offering flexible, space-saving installation options.

Features

• Up to 150,000 BTU/h input capacity
• 0.96 UEF and Energy Star certified
• Flow rate: 8.4 GPM at 35°F rise
• Dual stainless steel heat exchangers
• Ultra condensing efficiency
• Low NOx emissions (20 ppm)
• Field convertible gas system (NG/LP)
• Indoor or outdoor wall-hung installation
• EZNav™ control panel with HotButton™
• Cascading capable with up to 32 units via Ready-Link
• Direct venting: 2″ PVC up to 60 feet
• 1/2″ gas pipe capable up to 24 feet
• Gas connection: 3/4″ NPT
• Water connections: 3/4″ hot and cold
• 120V, single phase operation

Applications

• Residential homes with high hot water demand
• Multi-bathroom households
• Compact installations needing wall-hung systems
• Projects requiring venting and gas line flexibility
• Multi-unit cascade setups for greater capacity

Product Includes

• 1 –  Wall Mounting Bracket
• 4 – Tapping Screw and Anchor
• 2 – Vent Terminator
• 4 – Wall Flanges

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Navien NHW700-199AE – Non-Condensing Tankless Water Heater – Outdoor, 199,000 BTU

The Navien NHW700-199AE is a high-capacity, non-condensing tankless water heater built for outdoor residential applications. Designed to operate efficiently in a variety of climates, it delivers up to 199,900 BTU per hour and supports a maximum flow rate of 9.5 gallons per minute at a 35°F rise. The unit is equipped with Navien’s patented NaviTech™ stainless steel heat exchanger and a stainless steel Low NOx burner for durability and cleaner combustion. With a Uniform Energy Factor (UEF) of 0.81, the NHW700-199AE offers energy-efficient performance in a compact footprint.

This model comes with a built-in recirculation pump and buffer tank, helping to reduce hot water wait times and eliminate cold water bursts during demand cycles. It includes a built-in control panel for temperature adjustment and diagnostics, and is factory-configured for natural gas with an optional field conversion kit for propane. Safety features such as a flame rod, APS, high-limit temperature switch, and vent installation detector are integrated for peace of mind. The unit installs outdoors with NaviVent™ 3″ x 5″ concentric venting and requires no additional venting accessories.

Features

• Outdoor installation design
• 199,900 BTU/h input
• UEF rating of 0.81
• 9.5 GPM at 35°F rise, 7.4 GPM at 45°F rise
• Patented NaviTech™ stainless steel heat exchanger
• Stainless steel Low NOx burner (20 ppm)
• Built-in recirculation pump and buffer tank
• Electronic ignition system
• Built-in control panel for temperature setting and diagnostics
• Factory set for natural gas, field convertible to propane
• Vents using NaviVent™ concentric 3″ x 5″ system
• Safety features: flame rod, air pressure sensor, vent installation detector, water temp high limit switch, power surge fuse

Applications

• Residential outdoor water heating
• Homes needing high hot water output with minimal indoor space use
• Systems requiring reduced hot water wait time
• Installations in areas with natural gas or propane fuel availability
• Regions requiring Low NOx emissions compliance

Exclusive NaviTech stainless steel heat exchanger
The NWH-A series non-condensing tankless water heaters feature a stainless steel heat exchanger to deliver unmatched durability and performance.

ComfortFlow built-in recirculation system
The patented ComfortFlow system is the first to include a buffer tank, recirculation pump and fine-tuned controls into a tankless water heater.

NHW-A built-in control panel
Allows you to adjust water temperature, operation status and troubleshooting.

Built-in Air Pressure Sensor (APS)
Monitors vent system for blockage, automatically compensates for range of vent lengths, helps maintain proper air/gas ratio during operation, and ensures consistent hot water output during changing conditions.

Patented NaviTech stainless steel gas burner
Designed and manufactured by Navien to burn gas at higher efficiency than other system on the market.

Recirculation control built into circuit board
Ensures proper system setup, and reduces the need for additional components, saving installation time and cost.

Built-in Water Adjustment Valve (WAV) & Mixing Valve
Control flow to maintain setpoint and stabilize water temperature during flow changes.

Navien NPE-210S2 – Condensing Tankless Water Heater – 180,000 BTU

The Navien NPE-210S2 is a high-efficiency condensing tankless water heater designed to deliver continuous hot water in both residential and commercial settings. With input capacity ranging from 12,000 to 180,000 BTU/h and a Uniform Energy Factor of 0.96, it provides powerful, energy-saving performance. It delivers up to 10.1 gallons per minute at a 35°F rise and is ENERGY STAR certified for its high efficiency. Compact and wall-mounted, it installs indoors or outdoors and includes a field-convertible gas system with a conversion kit.

This model uses dual stainless steel heat exchangers for long-term durability and ultra condensing operation. It supports cascading with up to 16 units via Navien’s Ready-Link® technology and allows common venting with up to 12 units. The NPE-210S2 includes the EZNav™ multi-line control panel and built-in HotButton™ recirculation control, and it’s compatible with remote access via NaviLink™. It operates at elevations up to 10,100 feet and can use a 1/2″ gas line for runs up to 24 feet, providing installation flexibility across a range of applications.

Features

• 180,000 BTU/h input with 0.96 UEF
• Up to 10.1 GPM at 35°F temperature rise
• Dual stainless steel heat exchangers
• Ultra condensing efficiency
• Low NOx emissions (20 ppm)
• ENERGY STAR certified
• Field convertible gas system (NG or LP, kit included)
• Indoor or outdoor wall-hung installation (outdoor cap required)
• EZNav™ multi-line control panel
• Built-in HotButton™ for recirculation control
• Cascading capable (up to 16 units)
• Common venting up to 12 units
• 1/2″ gas line capable up to 24 feet
• Vent lengths: 2″ up to 75 ft, 3″ up to 150 ft
• Remote control capable (NaviLink™ compatible)
• Operates at elevations up to 10,100 ft

Applications

• Residential and commercial water heating
• Multi-bathroom homes or light commercial buildings
• Indoor or outdoor installations with limited space
• High-efficiency upgrades or replacements
• Multi-unit systems needing cascade or common venting capability

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Navien NCB-190/080H – Condensing Combi-Boiler – 160,000 BTU DHW / 80,000 BTU HTG 

The Navien NCB-190/080H is a high-efficiency condensing combi-boiler that delivers both hydronic space heating and domestic hot water from a single, compact wall-hung unit. With a 95% AFUE rating and up to 80,000 BTU/hr heating input, it provides consistent warmth and efficiency for a wide range of home sizes. The domestic hot water system delivers up to 160,000 BTU/hr with a 15:1 turndown ratio and 4.3 GPM flow rate at a 37°C rise, supporting simultaneous use across multiple fixtures.

Constructed with dual stainless steel heat exchangers for long-term durability and corrosion resistance, the NCB-190/080H is equipped with smart control features, built-in pumps, and field conversion capability between natural gas and propane. It supports cascading and common venting with NPE water heaters, making it an adaptable solution for residential heating and hot water needs.

Features:

• 95% AFUE energy efficiency
• 160,000 BTU/hr DHW input and 80,000 BTU/hr heating input
• Dual stainless steel heat exchangers
• 15:1 DHW turndown ratio
• Smart control with Setup Wizard and backlit LCD
• Built-in zone pumps and zone valve terminals
• Compatible with cascading and common venting setups
• Field convertible for natural gas or propane
• Compact wall-hung design
• Flexible 2″ or 3″ venting options

Applications:

• Whole-house hydronic space heating
• On-demand domestic hot water
• Homes using natural gas or propane
• New construction or system replacements
• Residences requiring compact, wall-mounted heating solutions
• Installations requiring energy-efficient and low-maintenance operation

Aim high with Navien…

High efficiency, High output, High performance, all in one compact combi

• Highest DHW maximum BTU’s in residential combi-boilers…up to 210,000 per hour
• Highest DHW flow rate @ 70°F rise…up to 5.4 GPM
• Highest number of BTU sizes for the North American residential combi-boiler market
• Highest residential combi DHW TDR…15:1 for all models
• Highest residential combi heating TDR… up to 11:1
• Highest number of built-in zone controls for valves or pumps… up to three
• Highest full lineup 2″ PVC venting lengths… up to 65 feet
• Highest number of cascade capable units with NPE tankless water heaters… up to 15
• High altitude certification… up to 10,100 feet (NG or LP)
• Lowest minimum fire BTU for residential combi-boilers… as low as 10,700

New Navien NCB-H…the complete combi package and no comprimises

Navien’s innovation and technological advancements have done it again. The new NCB-H is taking combi performance to the highest levels. As the competition tries to get closer, Navien ingenuity keeps advancing their lead.

COMPARE these advantages and see why NCB-H combis are the right fit for small and large homes

Dual stainless steel heat exchangers for heating Durable stainless steel heat exchangers resist corrosion, resulting in longer life and improved heat recovery from flue gases for superior efficiency.	Up to 5.4 GPM @ 70°F temperature rise for DHW Separate stainless steel flat plate heat exchanger for DHW creates the lightest flow rates for any combi-boiler in the industry.	Dual Venturi and field gas convertibility Dual Venturi system creates better combustion control and turndown ratio. Orifice conversion kit for easy field gas convertibility from NG to LP is included with every NCB-H Series combi-boiler.
Easy access to DHW module and valves All components of DHW module including water feed valve, flow adjustment valve, mixing valve and 3-way valve are right behind circuit board for easy serviceability.	Low noise levels Installations in or near media rooms, recreation rooms or any living areas of the house are possible with the quiet running NCB-H combi-boilers.	TDR 15:1 for DHW and up to 11:1 for heating The sophisticated gas flow control system provides a high turndown ratio, reducing energy waste and excessive boiler cycling and enhances temperature control for DHW.

Dual Stainless Steel Heat Exchanger Designed for exceptional heating performance and longevity Heating up to 150,000 BTUs per hour

Built-in DHW module now with
higher performance
Navien’s NCB-H generates enough hot water to run up to 3 showers and a dishwasher at the same time.

Expanded DHW Capability

For increased domestic hot water flow demand, the NCB-H can be cascaded and common vented with up to 15 NPE tankless water heaters

^ZNS

Navien NPE-240A2 – Condensing Tankless Water Heater – 199,000 BTU

The Navien NPE-240A2 is a high-capacity, high-efficiency condensing tankless water heater engineered for residential and light commercial applications. With an input range of 13,300 to 199,900 BTU per hour and a Uniform Energy Factor of 0.95, it delivers up to 11.2 gallons per minute at a 35°F temperature rise. Its compact, wall-hung design allows for flexible indoor or outdoor installation and supports 2″ or 3″ venting for long runs, making it ideal for homes or businesses requiring reliable and continuous hot water.

This model features Navien’s patented ComfortFlow® system with a built-in recirculation pump and buffer tank to eliminate temperature fluctuations and minimize hot water wait time. Dual stainless steel heat exchangers enhance durability, while the EZNav™ control panel simplifies setup and operation. The NPE-240A2 supports cascading with up to 32 units and common venting with up to 12, and is field convertible for natural gas or propane use. With ultra-low NOx emissions and advanced safety features, it delivers efficient performance without sacrificing reliability.

Features

• 199,900 BTU/h input with 0.95 UEF
• Flow rate: up to 11.2 GPM at 35°F rise
• Dual stainless steel heat exchangers
• Built-in ComfortFlow® recirculation pump and buffer tank
• Field convertible gas system (NG or LP, kit included)
• Low NOx emissions (20 ppm)
• Indoor or outdoor wall-hung installation
• EZNav™ multi-line control panel with built-in HotButton™
• Cascading capable: up to 32 units
• Common venting capable: up to 12 units
• 1/2″ gas line compatible up to 24 feet
• 2″ venting up to 75 feet, 3″ venting up to 150 feet
• 3/4″ NPT gas and water connections
• Electronic ignition and VID safety feature

Applications

• Residential homes with high hot water demand
• Light commercial facilities needing continuous hot water
• Retrofits or upgrades to high-efficiency systems
• Indoor or outdoor wall-mounted installations
• Cascade setups in multi-unit buildings or large households

Navien NPE-A2 simply a smarter hot water system for today’s life styles

Navien…the proven leader in condensing tankless, makes it even easier to install and set up with the new NPE-A2 series

Built-in recirculation system Navien’s patented ComfortFlow® system is the first to include a buffer tank, recirculation pump and fine-tuned controls into a tankless water heater, resolving the cold-water sandwich effect* and issues of minimal flow rates commonly found in other tankless water heaters. * The “cold-water sandwich effect” is the undesired introduction of cold water into the hot water supply line on occasions of frequent on/off operations. (Measure Guideline : Transitioning to a Tankless Water heater, DOE, Sept.2012).

The built-in recirculation pump allows the NPE-A2 to recirculate water either through an external recirc line or through existing supply lines while using NaviCirc®, without the need for external pumps or controls.

Multi-line control with built-in intuitive software  Navien’s new backlit EZNav™ control panel uses simple text and icons to make set up, operation status and troubleshooting faster and easier than ever before. Self-diagnostics. Displays temperature and water flow rate. Displays status of cascade operation. Convertible display from °F to °C. User Friendly Interface. Easy setup.

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Navien NCB-240/110H – Condensing Combi-Boiler – 199,000 BTU DHW / 110,000 BTU HTG

The Navien NCB-240/110H is a 95% AFUE condensing combi-boiler designed to deliver both space heating and domestic hot water in one high-performance, wall-mounted unit. With a maximum heating input of 110,000 BTU/hr and up to 199,000 BTU/hr for DHW, it efficiently meets the demands of larger homes or applications with simultaneous heating and hot water needs.

This combi-boiler operates on natural gas or propane and includes advanced features such as dual stainless steel heat exchangers, a smart control interface, and built-in zone pump and valve terminals. With turndown ratios of 8.5:1 for space heating and 15:1 for hot water, the NCB-240/110H adapts efficiently to fluctuating usage demands, reducing wear and energy waste.

Features:

• 95% AFUE high-efficiency rating
• 110,000 BTU/hr heating input
• Up to 199,000 BTU/hr DHW input
• 8.5:1 turndown ratio for heating
• 15:1 turndown ratio for domestic hot water
• Smart controls with backlit LCD and Setup Wizard
• Dual stainless steel heat exchangers
• Field convertible between natural gas and propane
• Built-in zone pump and zone valve connections
• Compact, wall-hung design with quiet operation
• Supports 2″ or 3″ direct venting

Applications:

• Residential space heating and hot water
• Homes with simultaneous multi-fixture usage
• Natural gas or propane fuel systems
• Installations requiring compact, high-efficiency units
• New construction or retrofit boiler replacements
• Indoor wall-mounted applications with venting flexibility

Aim high with Navien…

High efficiency, High output, High performance, all in one compact combi

• Highest DHW maximum BTU’s in residential combi-boilers…up to 210,000 per hour
• Highest DHW flow rate @ 70°F rise…up to 5.4 GPM
• Highest number of BTU sizes for the North American residential combi-boiler market
• Highest residential combi DHW TDR…15:1 for all models
• Highest residential combi heating TDR… up to 11:1
• Highest number of built-in zone controls for valves or pumps… up to three
• Highest full lineup 2″ PVC venting lengths… up to 65 feet
• Highest number of cascade capable units with NPE tankless water heaters… up to 15
• High altitude certification… up to 10,100 feet (NG or LP)
• Lowest minimum fire BTU for residential combi-boilers… as low as 10,700

New Navien NCB-H…the complete combi package and no comprimises

Navien’s innovation and technological advancements have done it again. The new NCB-H is taking combi performance to the highest levels. As the competition tries to get closer, Navien ingenuity keeps advancing their lead.

COMPARE these advantages and see why NCB-H combis are the right fit for small and large homes

Dual stainless steel heat exchangers for heating Durable stainless steel heat exchangers resist corrosion, resulting in longer life and improved heat recovery from flue gases for superior efficiency.	Up to 5.4 GPM @ 70°F temperature rise for DHW Separate stainless steel flat plate heat exchanger for DHW creates the lightest flow rates for any combi-boiler in the industry.	Dual Venturi and field gas convertibility Dual Venturi system creates better combustion control and turndown ratio. Orifice conversion kit for easy field gas convertibility from NG to LP is included with every NCB-H Series combi-boiler.
Easy access to DHW module and valves All components of DHW module including water feed valve, flow adjustment valve, mixing valve and 3-way valve are right behind circuit board for easy serviceability.	Low noise levels Installations in or near media rooms, recreation rooms or any living areas of the house are possible with the quiet running NCB-H combi-boilers.	TDR 15:1 for DHW and up to 11:1 for heating The sophisticated gas flow control system provides a high turndown ratio, reducing energy waste and excessive boiler cycling and enhances temperature control for DHW.

Dual Stainless Steel Heat Exchanger Designed for exceptional heating performance and longevity Heating up to 150,000 BTUs per hour

Built-in DHW module now with
higher performance
Navien’s NCB-H generates enough hot water to run up to 3 showers and a dishwasher at the same time.

Expanded DHW Capability

For increased domestic hot water flow demand, the NCB-H can be cascaded and common vented with up to 15 NPE tankless water heaters

^ZNS

Navien NPE-210A2 – Condensing Tankless Water Heater – 180,000 BTU

The Navien NPE-210A2 is a high-efficiency condensing tankless water heater engineered for both residential and commercial applications. With an input capacity of 12,000 to 180,000 BTU per hour and a Uniform Energy Factor of 0.95, it provides dependable hot water while maintaining low energy costs. The unit supports up to 10.1 gallons per minute at a 35°F rise, making it ideal for homes with multiple fixtures or businesses requiring steady hot water. Its compact, wall-hung design supports indoor or outdoor installation, and it is field convertible between natural gas and propane.

Designed with Navien’s ultra condensing technology and dual stainless steel heat exchangers, the NPE-210A2 also includes built-in recirculation via ComfortFlow® technology, minimizing hot water wait times. The unit features an intuitive EZNav™ control panel with built-in HotButton™ functionality, cascading capability for up to 12 common-vented units, and ½” gas line compatibility up to 24 feet. It’s compatible with NaviLink™ for remote control and can support space heating through the optional H2Air Kit.

Features

• 180,000 BTU/h input with 0.95 UEF
• Up to 10.1 GPM at 35°F temperature rise
• Dual stainless steel heat exchangers
• Ultra condensing efficiency
• ComfortFlow® recirculation with built-in buffer tank and pump
• EZNav™ multi-line control panel with HotButton™
• Low NOx emissions (20 ppm)
• Field convertible gas system (NG/LP)
• Indoor or outdoor wall-hung installation
• 1/2″ gas line capable up to 24 feet
• Direct venting: 2″ up to 75 feet, 3″ up to 150 feet
• Cascading and common venting for up to 12 units
• Compatible with NaviLink™ remote control system
• 3/4″ NPT hot, cold, and gas connections

Applications

• Residential homes with high hot water demand
• Light commercial water heating
• Multi-bathroom households or small businesses
• Installations needing gas and venting flexibility
• Cascade-ready systems with optional space heating

Navien NPE-A2 simply a smarter hot water system for today’s life styles

Navien…the proven leader in condensing tankless, makes it even easier to install and set up with the new NPE-A2 series

Built-in recirculation system Navien’s patented ComfortFlow® system is the first to include a buffer tank, recirculation pump and fine-tuned controls into a tankless water heater, resolving the cold-water sandwich effect* and issues of minimal flow rates commonly found in other tankless water heaters. * The “cold-water sandwich effect” is the undesired introduction of cold water into the hot water supply line on occasions of frequent on/off operations. (Measure Guideline : Transitioning to a Tankless Water heater, DOE, Sept.2012).

The built-in recirculation pump allows the NPE-A2 to recirculate water either through an external recirc line or through existing supply lines while using NaviCirc®, without the need for external pumps or controls.

Multi-line control with built-in intuitive software  Navien’s new backlit EZNav™ control panel uses simple text and icons to make set up, operation status and troubleshooting faster and easier than ever before. Self-diagnostics. Displays temperature and water flow rate. Displays status of cascade operation. Convertible display from °F to °C. User Friendly Interface. Easy setup.

^PNAV000020

Navien NPE-240S2 – Condensing Tankless Water Heater – 199,000 BTU

The Navien NPE-240S2 is a premium condensing tankless water heater built to deliver reliable, high-capacity hot water for residential or commercial applications. With a powerful input range of 13,300 to 199,900 BTU/h and an impressive 0.96 UEF, it’s ENERGY STAR® certified for efficiency and performance. This unit delivers up to 11.2 gallons per minute at a 35°F temperature rise and operates at flow rates as low as 0.5 GPM, making it ideal for both large-volume and low-demand applications.

Designed for indoor or outdoor wall-hung installation, the NPE-240S2 features ultra condensing technology and durable dual stainless steel heat exchangers. It includes the intuitive EZNav™ control panel with a built-in HotButton™ interface and is compatible with NaviLink™ for remote access. The unit is field convertible between natural gas and propane and supports cascading of up to 12 units for expanded demand. With ultra-low NOx emissions and 1/2″ gas line compatibility up to 24 feet, it offers maximum flexibility for a wide range of installations.

Features

• 199,900 BTU/h input with 0.96 UEF efficiency
• Up to 11.2 GPM at 35°F temperature rise
• Dual stainless steel heat exchangers
• Ultra condensing performance
• Low NOx emissions (20 ppm)
• Minimum flow rate: 0.5 GPM
• Indoor or outdoor wall-hung installation
• Field convertible gas system (NG or LP)
• EZNav™ control panel with HotButton™ interface
• Cascading capable with up to 12 units
• Common venting capable
• 1/2″ gas pipe compatible up to 24 ft
• 2″ venting up to 60 ft, 3″ venting up to 150 ft
• 3/4″ NPT connections for gas, hot, and cold water
• 120V, 60Hz, single-phase power supply
• CSA Listed, AHRI Certified, ENERGY STAR®, NSF Listed

Applications

• Residential homes with high simultaneous water demand
• Light commercial hot water systems
• Indoor or outdoor installations needing compact, wall-mounted design
• Projects requiring gas and venting flexibility
• Multi-unit cascade-ready setups

^PNAV000037

Navien NFB-200H – Condensing Heating Boiler – 199,000 BTU

The Navien NFB-200H is a high-efficiency condensing heating boiler designed for residential and light commercial applications. Rated at 95% AFUE and Energy Star certified, it delivers up to 199,900 BTU/hr input with a DOE heating capacity of 183,000 BTU/hr. The boiler features a 15:1 turndown ratio for precise load matching and energy savings. Its patented stainless steel fire tube heat exchanger is paired with a non-metallic condensate base for durability and corrosion resistance. The NFB-200H includes advanced controls, supports common venting and cascading, and is approved for high-altitude installations.

Features:

• 95% AFUE – Energy Star certified
• 15:1 turndown ratio for efficient performance across variable loads
• Patented stainless steel fire tube heat exchanger with non-metallic condensate base
• 2″ venting up to 65 ft, 3″ venting up to 150 ft
• Advanced controls with intuitive interface and Setup Wizard
• Built-in powered connections for 3 zone valves or 3 zone pumps
• Common venting for up to 8 units and cascading for up to 16
• Approved for high altitudes up to 10,100 ft (NG and LP)
• Field convertible with included gas conversion kits
• NaviLink Wi-Fi compatible for remote control and monitoring (sold separately)

Applications:

• Residential hydronic heating systems
• Light commercial buildings
• Installations requiring scalable boiler banks
• High-efficiency replacements for aging systems
• Multi-zone systems with valves or pumps
• Indoor wall-hung boiler installations with flexible venting options

NFB-200H premium features and benefits

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2″ venting up to 65′;
3” up to 150’ (including schedule 40 PVC).Vent Installation Detector (VID)for added safety.

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Dual Venturi system creates better combustion control, turndown ratio and easy field gas conversions.

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Patented stainless steel fire tube heat exchanger Navien’s innovative heat exchanger design is ASME‑Certified,“H” Stamped, and reduces high-stress point weld failures common on other combi-boilers.

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Low gas pressure operation. Negative pressure regulating gas valveensures maximum performance all the way down to 3.5″ of water column on natural gas and 8″ of water column on propane gas.

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Advanced user interface with Setup Wizard is made easy with backlit panel, click-wheel control and intuitive text.

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Built-in control for a boiler pump, 3 zone pumps or 3 zone valves

1/2″ gas pipe capability up to 24′ (subject to local codes). Cuts installation time, no need to install new gas lines for retrofit applications.

^PZNS642636

Navien NHB-150H – Condensing Heating Boiler – 150,000 BTU

The Navien NHB-150H is a high-efficiency condensing wall-hung boiler designed for indoor residential and light commercial heating. It delivers up to 95% AFUE with a 15:1 turndown ratio, providing precise temperature control and energy savings. Compact and wall-mounted, it measures 17.3″ wide by 23.8″ high and 12.8″ deep, weighing 80 pounds. The boiler supports forced draft direct venting with flexible vent pipe options and lengths, allowing versatile installation.

This model includes advanced user controls and a built-in 3-zone controller to simplify multi-zone heating systems. Safety is prioritized with multiple built-in detectors and sensors, while certification to Energy Star and other standards ensures reliability. The NHB-150H is field convertible for use with natural gas or propane, meeting diverse installation needs.

Features

• 95% AFUE efficiency with 15:1 turndown ratio
• Field convertible between natural gas and propane
• Electronic ignition system
• Stainless steel primary and secondary heat exchangers
• Built-in 3-zone controller for zone valves or pumps
• Vent compatible with 2″ or 3″ PVC, CPVC, polypropylene, and special gas vent piping
• Maximum vent length: 2″ up to 65 feet, 3″ up to 150 feet
• Compact wall-hung design: 17.3″ W x 23.8″ H x 12.8″ D; 80 lbs
• Advanced controls with backlit interface, click-wheel, and setup wizard
• Safety devices including flame rod, air proving switch, gas valve and ignition detectors, high limit switches, and vent installation detector
• Zero clearance to combustibles
• Certifications: Energy Star, CSA B149.1, ASME H, ANSI Z223.1

Applications

• Residential and light commercial space heating
• Multi-zone hydronic heating systems
• Installations requiring compact, wall-mounted boilers
• Retrofits and new construction
• Systems needing flexible venting and fuel options

^ZCS

Navien NHB-110H – Condensing Heating Boiler – 110,000 BTU

The Navien NHB-110H is a high-efficiency condensing wall-hung boiler designed for indoor residential and light commercial heating. It delivers up to 95% AFUE with a 15:1 turndown ratio, providing precise temperature control and energy savings. Compact and wall-mounted, it measures 17.3″ wide by 23.8″ high and 12.8″ deep, weighing 80 pounds. The boiler supports forced draft direct venting with flexible vent pipe options and lengths, allowing versatile installation.

This model includes advanced user controls and a built-in 3-zone controller to simplify multi-zone heating systems. Safety is prioritized with multiple built-in detectors and sensors, while certification to Energy Star and other standards ensures reliability. The NHB-150H is field convertible for use with natural gas or propane, meeting diverse installation needs.

Features

• 95% AFUE efficiency with 15:1 turndown ratio
• Field convertible between natural gas and propane
• Electronic ignition system
• Stainless steel primary and secondary heat exchangers
• Built-in 3-zone controller for zone valves or pumps
• Vent compatible with 2″ or 3″ PVC, CPVC, polypropylene, and special gas vent piping
• Maximum vent length: 2″ up to 65 feet, 3″ up to 150 feet
• Compact wall-hung design: 17.3″ W x 23.8″ H x 12.8″ D; 80 lbs
• Advanced controls with backlit interface, click-wheel, and setup wizard
• Safety devices including flame rod, air proving switch, gas valve and ignition detectors, high limit switches, and vent installation detector
• Zero clearance to combustibles
• Certifications: Energy Star, CSA B149.1, ASME H, ANSI Z223.1

Applications

• Residential and light commercial space heating
• Multi-zone hydronic heating systems
• Installations requiring compact, wall-mounted boilers
• Retrofits and new construction
• Systems needing flexible venting and fuel options

^ZCS

Navien NFC-250/200H – Condensing Combi-Boiler – 199,900 BTU DHW / 210,000 BTU HTG

The Navien NFC-250/200H is a high-efficiency condensing combi-boiler that combines space heating and domestic hot water production in a single compact unit. It delivers 95% AFUE efficiency and is Energy Star certified. The unit features a 15:1 turndown ratio for both heating and domestic hot water, ensuring precise temperature control and energy savings. Equipped with a new domestic hot water module with mixing and water adjustment valves, it provides consistent, comfortable hot water. Advanced controls with an intuitive interface and Setup Wizard simplify installation and operation, while built-in powered connections support up to three zone valves or pumps.

This boiler supports flexible venting options with 2″ pipe runs up to 65 feet and 3″ runs up to 150 feet. Its patented stainless steel fire tube heat exchanger and non-metallic condensate base ensure durability and reliability. The NFC-250/200H is approved for high altitude installations up to 10,100 feet on natural gas and propane, with conversion kits included. It can be common vented with up to seven NPE units or cascaded with up to fifteen units, allowing easy capacity expansion for larger heating demands.

Features

• 95% AFUE efficiency, Energy Star certified
• 15:1 turndown ratio for heating and DHW
• New DHW module with mixing and water adjustment valves
• Advanced controls with Setup Wizard
• Built-in powered connections for 3 zone valves or pumps
• Venting: 2″ up to 65 feet, 3″ up to 150 feet
• Patented stainless steel fire tube heat exchanger
• Non-metallic condensate base
• High altitude approval up to 10,100 ft (NG and LP) with conversion kits
• Common venting up to 7 NPE units; cascading up to 15 units

Applications

• Residential and light commercial space heating
• Domestic hot water supply for multiple fixtures
• Multi-zone hydronic heating systems
• High altitude installations
• Cascade boiler setups for increased capacity

Related Video: NFC-H Condensing Fire Tube Combi-Boiler

^PZNS665113

Navien NCB-250/150H – Condensing Combi-Boiler – 250,000 BTU DHW / 210,000 BTU HTG

The Navien NCB-250/150H is a 95% AFUE condensing combi-boiler that combines powerful space heating and on-demand domestic hot water in a single wall-hung unit. With a maximum input of 150,000 BTU/hr and a net AHRI rating of 120,000 BTU/hr, this unit delivers efficient performance for larger residential applications. It offers a 11.1:1 turndown ratio for heating and a 15:1 ratio for hot water, providing responsive modulation based on system demand.

The NCB-250/150H is field convertible from natural gas to propane and supports a range of venting materials including PVC, CPVC, polypropylene, and stainless steel. It also features compatibility with Navien’s NaviLink smart home controller for remote access and monitoring.

Features:

• 95% AFUE high-efficiency rating
• 150,000 BTU/hr heating input
• 120,000 BTU/hr net AHRI rating
• 11.1:1 turndown ratio for space heating
• 15:1 turndown ratio for domestic hot water
• Field convertible between natural gas and propane
• Smart controls with NaviLink compatibility
• Energy Star certified
• Compact wall-mounted design
• Compatible with 2″ or 3″ venting (PVC, CPVC, polypropylene, stainless steel)

Applications:

• Whole-home space heating and domestic hot water
• Medium to large residential homes
• Indoor installations with venting flexibility
• Natural gas or propane systems
• Retrofits and new construction
• Smart home integration with NaviLink controller

Aim high with Navien…

High efficiency, High output, High performance, all in one compact combi

• Highest DHW maximum BTU’s in residential combi-boilers…up to 210,000 per hour
• Highest DHW flow rate @ 70°F rise…up to 5.4 GPM
• Highest number of BTU sizes for the North American residential combi-boiler market
• Highest residential combi DHW TDR…15:1 for all models
• Highest residential combi heating TDR… up to 11:1
• Highest number of built-in zone controls for valves or pumps… up to three
• Highest full lineup 2″ PVC venting lengths… up to 65 feet
• Highest number of cascade capable units with NPE tankless water heaters… up to 15
• High altitude certification… up to 10,100 feet (NG or LP)
• Lowest minimum fire BTU for residential combi-boilers… as low as 10,700

New Navien NCB-H…the complete combi package and no comprimises

Navien’s innovation and technological advancements have done it again. The new NCB-H is taking combi performance to the highest levels. As the competition tries to get closer, Navien ingenuity keeps advancing their lead.

COMPARE these advantages and see why NCB-H combis are the right fit for small and large homes

Dual Stainless Steel Heat Exchanger Designed for exceptional heating performance and longevity Heating up to 150,000 BTUs per hour

Built-in DHW module now with
higher performance
Navien’s NCB-H generates enough hot water to run up to 3 showers and a dishwasher at the same time.

Expanded DHW Capability

For increased domestic hot water flow demand, the NCB-H can be cascaded and common vented with up to 15 NPE tankless water heaters

^ZCS

R-134A refrigerant packed in a 30 lb disposable cylinder —

R-134A is a single-component HFC used in automotive AC, household appliances, and chillers. Each cylinder is factory-sealed and meets ASHRAE / AHRI purity specifications, ready for direct use by licensed HVAC technicians.

• Factory-filled, certified purity
• Disposable steel cylinder with standard service-port fitting
• Ships fast from US warehouses
• Bulk pricing available — contact us for a quote

Important: R-134A is sold only to EPA Section 608/609 certified technicians where required by law. By purchasing, you confirm you meet all applicable federal, state, and local regulations.

R-410A refrigerant packed in a 25 lb disposable cylinder —

R-410A is a high-pressure HFC blend that powers most modern residential split-system AC units. Each cylinder is factory-sealed and meets ASHRAE / AHRI purity specifications, ready for direct use by licensed HVAC technicians.

• Factory-filled, certified purity
• Disposable steel cylinder with standard service-port fitting
• Ships fast from US warehouses
• Bulk pricing available — contact us for a quote

Important: R-410A is sold only to EPA Section 608/609 certified technicians where required by law. By purchasing, you confirm you meet all applicable federal, state, and local regulations.

Navien NCB-240/130H – Condensing Combi-Boiler – 199,000 BTU DHW / 130,000 BTU HTG

The Navien NCB-240/130H is a high-efficiency, 95% AFUE condensing combi-boiler that delivers both space heating and domestic hot water in a single wall-hung unit. Designed for performance and convenience, it features a maximum heating input of 130,000 BTU/hr and a DHW input of up to 199,000 BTU/hr. The unit supports both natural gas and propane, with field conversion included, and offers flexible venting options using 2″ or 3″ PVC, CPVC, polypropylene, or stainless steel.

The NCB-240/130H includes dual stainless steel heat exchangers, integrated smart controls with an LCD display, and built-in support for three heating zones. With advanced turndown ratios and Energy Star certification, it’s engineered to optimize energy use while maintaining consistent comfort in residential heating applications.

Features:

• 95% AFUE efficiency rating
• 130,000 BTU/hr heating input
• 199,000 BTU/hr DHW input
• Dual stainless steel heat exchangers
• 10:1 heating turndown ratio
• 15:1 domestic hot water turndown ratio
• Smart controls with LCD display and setup wizard
• Integrated 3-zone controller for zone valves or circulators
• Field convertible from natural gas to propane (kit included)
• Compact wall-hung design
• Energy Star certified
• Built-in freeze protection and advanced safety controls
• Supports cascading with up to 15 NPE units

Applications:

• Whole-home heating and on-demand hot water
• Residential homes using natural gas or propane
• Indoor wall-mounted installations
• Projects requiring high-efficiency boiler systems
• Smart home setups using Navien controls
• Systems needing multi-zone heating integration

Aim high with Navien…

High efficiency, High output, High performance, all in one compact combi

• Highest DHW maximum BTU’s in residential combi-boilers…up to 210,000 per hour
• Highest DHW flow rate @ 70°F rise…up to 5.4 GPM
• Highest number of BTU sizes for the North American residential combi-boiler market
• Highest residential combi DHW TDR…15:1 for all models
• Highest residential combi heating TDR… up to 11:1
• Highest number of built-in zone controls for valves or pumps… up to three
• Highest full lineup 2″ PVC venting lengths… up to 65 feet
• Highest number of cascade capable units with NPE tankless water heaters… up to 15
• High altitude certification… up to 10,100 feet (NG or LP)
• Lowest minimum fire BTU for residential combi-boilers… as low as 10,700

New Navien NCB-H…the complete combi package and no comprimises

Navien’s innovation and technological advancements have done it again. The new NCB-H is taking combi performance to the highest levels. As the competition tries to get closer, Navien ingenuity keeps advancing their lead.

COMPARE these advantages and see why NCB-H combis are the right fit for small and large homes

Dual stainless steel heat exchangers for heatingDurable stainless steel heat exchangers resist corrosion, resulting in longer life and improved heat recovery from flue gases for superior efficiency.	Up to 5.4 GPM @ 70°F temperature rise for DHWSeparate stainless steel flat plate heat exchanger for DHW creates the lightest flow rates for any combi-boiler in the industry.	Dual Venturi and field gas convertibilityDual Venturi system creates better combustion control and turndown ratio. Orifice conversion kit for easy field gas convertibility from NG to LP is included with every NCB-H Series combi-boiler.
Easy access to DHW module and valvesAll components of DHW module including water feed valve, flow adjustment valve, mixing valve and 3-way valve are right behind circuit board for easy serviceability.	Low noise levelsInstallations in or near media rooms, recreation rooms or any living areas of the house are possible with the quiet running NCB-H combi-boilers.	TDR 15:1 for DHW and up to 11:1 for heatingThe sophisticated gas flow control system provides a high turndown ratio, reducing energy waste and excessive boiler cycling and enhances temperature control for DHW.

Dual Stainless Steel Heat Exchanger Designed for exceptional heating performance and longevity Heating up to 150,000 BTUs per hour

Built-in DHW module now with
higher performance
Navien’s NCB-H generates enough hot water to run up to 3 showers and a dishwasher at the same time.

Expanded DHW Capability

For increased domestic hot water flow demand, the NCB-H can be cascaded and common vented with up to 15 NPE tankless water heaters

^PNAV000036

R-407A refrigerant packed in a 25 lb disposable cylinder —

R-407A is a chlorine-free HFC blend for low- and medium-temperature commercial refrigeration. Each cylinder is factory-sealed and meets ASHRAE / AHRI purity specifications, ready for direct use by licensed HVAC technicians.

• Factory-filled, certified purity
• Disposable steel cylinder with standard service-port fitting
• Ships fast from US warehouses
• Bulk pricing available — contact us for a quote

Important: R-407A is sold only to EPA Section 608/609 certified technicians where required by law. By purchasing, you confirm you meet all applicable federal, state, and local regulations.

Navien NCB-190/060H – Condensing Combi-Boiler – 160,000 BTU DHW / 60,000 BTU HTG

The Navien NCB-190/060H is a high-efficiency condensing combi-boiler that delivers both space heating and domestic hot water in one compact unit. With a 95% AFUE rating and a 15:1 turndown ratio for DHW, this boiler provides precise performance and significant energy savings. It features dual stainless steel heat exchangers, built-in controls, and flexible venting options. The unit is field convertible for use with natural gas or propane and is suitable for small to large homes, capable of supporting up to three showers and a dishwasher simultaneously.

Specifications:

• DHW Input: 10,000 to 160,000 BTU/hr
• Heating Input: 60,000 BTU/hr
• AFUE: 95%
• Flow Rate: 4.1 GPM at 70°F rise
• Venting: 2″ up to 65 ft or 3″ up to 150 ft (PVC, CPVC, or polypropylene)
• Dimensions: 17.3″ W x 12.8″ D x 29.3″ H
• Weight: 88.2 lbs
• Gas Type: Field convertible (natural gas or propane)
• Controls: LCD display with Setup Wizard
• Built-in: Pumps and connections for 3 zone pumps and 3 zone valves

Applications:

• Space heating and domestic hot water for residential homes
• Compatible with cascade and common venting configurations using NPE water heaters

Aim high with Navien…

High efficiency, High output, High performance, all in one compact combi

• Highest DHW maximum BTU’s in residential combi-boilers…up to 210,000 per hour
• Highest DHW flow rate @ 70°F rise…up to 5.4 GPM
• Highest number of BTU sizes for the North American residential combi-boiler market
• Highest residential combi DHW TDR…15:1 for all models
• Highest residential combi heating TDR… up to 11:1
• Highest number of built-in zone controls for valves or pumps… up to three
• Highest full lineup 2″ PVC venting lengths… up to 65 feet
• Highest number of cascade capable units with NPE tankless water heaters… up to 15
• High altitude certification… up to 10,100 feet (NG or LP)
• Lowest minimum fire BTU for residential combi-boilers… as low as 10,700

New Navien NCB-H…the complete combi package and no comprimises

Navien’s innovation and technological advancements have done it again. The new NCB-H is taking combi performance to the highest levels. As the competition tries to get closer, Navien ingenuity keeps advancing their lead.

COMPARE these advantages and see why NCB-H combis are the right fit for small and large homes

Dual stainless steel heat exchangers for heating Durable stainless steel heat exchangers resist corrosion, resulting in longer life and improved heat recovery from flue gases for superior efficiency.	Up to 5.4 GPM @ 70°F temperature rise for DHW Separate stainless steel flat plate heat exchanger for DHW creates the lightest flow rates for any combi-boiler in the industry.	Dual Venturi and field gas convertibility Dual Venturi system creates better combustion control and turndown ratio. Orifice conversion kit for easy field gas convertibility from NG to LP is included with every NCB-H Series combi-boiler.
Easy access to DHW module and valves All components of DHW module including water feed valve, flow adjustment valve, mixing valve and 3-way valve are right behind circuit board for easy serviceability.	Low noise levels Installations in or near media rooms, recreation rooms or any living areas of the house are possible with the quiet running NCB-H combi-boilers.	TDR 15:1 for DHW and up to 11:1 for heating The sophisticated gas flow control system provides a high turndown ratio, reducing energy waste and excessive boiler cycling and enhances temperature control for DHW.

Dual Stainless Steel Heat Exchanger Designed for exceptional heating performance and longevity Heating up to 150,000 BTUs per hour

Built-in DHW module now with
higher performance
Navien’s NCB-H generates enough hot water to run up to 3 showers and a dishwasher at the same time.

Expanded DHW Capability

For increased domestic hot water flow demand, the NCB-H can be cascaded and common vented with up to 15 NPE tankless water heaters

^ZNS

25lb R-407C Refrigerant, Factory Sealed – Made in USA — available now.

Genuine, factory-sealed product shipped from our US warehouses. Volume discounts available on request

R-507 refrigerant packed in a 25 lb disposable cylinder

R-507 is a near-azeotropic HFC blend used in commercial low- and medium-temperature refrigeration. Each cylinder is factory-sealed and meets ASHRAE / AHRI purity specifications, ready for direct use by licensed HVAC technicians.

• Factory-filled, certified purity
• Disposable steel cylinder with standard service-port fitting
• Ships fast from US warehouses
• Bulk pricing available — contact us for a quote

Important: R-507 is sold only to EPA Section 608/609 certified technicians where required by law. By purchasing, you confirm you meet all applicable federal, state, and local regulations.

R-410A refrigerant packed in a 25 lb disposable cylinder

R-410A is a high-pressure HFC blend that powers most modern residential split-system AC units. Each cylinder is factory-sealed and meets ASHRAE / AHRI purity specifications, ready for direct use by licensed HVAC technicians.

• Factory-filled, certified purity
• Disposable steel cylinder with standard service-port fitting
• Ships fast from US warehouses
• Bulk pricing available — contact us for a quote

Important: R-410A is sold only to EPA Section 608/609 certified technicians where required by law. By purchasing, you confirm you meet all applicable federal, state, and local regulations.