Navien Heating Systems For Homes


Navien has the ideal energy-efficient solutions for whether you require an endless supply of hot water, efficient home heating, or both.

Navien heating systems provides the most advanced condensing tankless water heaters, condensing boilers, and the first combi-boilers capable of supporting whole-house heating and hot water for larger Boston homes.

Find the Right Navien Heating System for Your Home.

Navien's high-efficiency and environmentally friendly condensing technology can cut energy consumption by 20% while also significantly lowering greenhouse gas emissions.

Navien Tankless Water Heaters For Homes

The Navien NPE-2 Series and NPN Series tankless water heaters provide unlimited domestic hot water while keeping your utility bills low.

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Condensing Tankless Water Heaters

Navien Premium Efficiency condensing tankless water heaters are the #1 selling high efficiency condensing tankless water heaters in North America. The NPE-2 series offers ultra-high efficiency up to 0.96 UEF to keep your utility bills low, endless hot water, and exclusive ComfortFlow® technology with a built-in recirculation pump and buffer tank.

New NPE-A2 Series

Three NPE-A2 Advanced Premium models offer a Uniform Energy Factor up to .95 and feature Navien’s patented ComfortFlow system.

New NPE-S2 Series

  • Four NPE-S2 Standard Premium models offer a Uniform Energy
  • Factor up to .96, providing more output, lower installation costs
  • Lower operating costs.
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Non-Condensing Tankless Water Heaters

Navien Premium Non-condensing tankless water heaters deliver a continuous flow of hot water for as long as you need it. No waiting for a tank to reheat more water, wasting time and energy. NPN series is the only non-condensing tankless water heater to offer NaviTech™ stainless steel heat exchanger and stainless steel burner for durable and eco-friendly performance.

NPN-U Series

NPN-U (Universal) premium non-condensing tankless water heaters offer a compact tankless solution for both indoor and outdoor installations.

NPN-E Series

NPN-E (Exterior) non-condensing tankless water heaters offer a compact tankless solution for outdoor installations.

Navien's Condensing Boilers for Homes

Navien high-efficiency condensing boilers heat entire homes, both small and large.

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NFB-H Series

The most advanced condensing fire tube boilers in the industry, and now with more heating capacity for any size home.

  • Good for small & large homes
  • Low noise
  • Up to 15:1 turndown ratio
  • Built-in capability for multiple zones
  • Wi-Fi compatible
  • Expandable via cascading technology
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NHB Series

Navien NHB boilers offer homeowners industry-leading turndown ratios, longer venting and cascading capabilities for greater installation flexibility, and easy-to-use integrated controls

  • Good for small & large homes
  • Low noise
  • Up to 15:1 turndown ratio
  • Built-in capability for multiple zones
  • Cascade up to 16 units

Navien's advanced burner system is standard on all NHB and new NFB-H boilers. With the industry's highest turndown ratio, multiple zones can be installed more easily while maintaining high operational efficiencies.

  • Much more energy-efficient than old fashioned boiler systems
  • The highest energy efficiency in the industry — up to 95% AFUE
  • Energy Star certified
  • Backed by the industry’s strongest warranty — 10 years on heat exchangers
  • Easy to use control panel
  • Longer lasting than traditional floor standing boilers
  • Elegant, clean appearance
  • Improves resale value
  • Ideal for replacements or new construction
  • Takes up about 80% less space than traditional floor standing boilers

Navien Eco-Friendly & Energy-Efficient Combi-Boilers

Navien residential combi-boilers offer on-demand hot water as well as whole-house heating for small and large Boston homes.

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NCB-H Series

The Navien NCB-H lineup offers homeowners higher turndown ratios, wider BTU ranges, longer venting for more flexible installation, an all-new easy-to-use multi-line LCD display with improved controls and intuitive navigation, and an upgraded domestic hot-water module.

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NFC-H Series

NFC-H high-efficiency condensing fire tube combi-boiler series offers the highest heating and DHW performance ever built into one compact combi-boiler. With 5.4 gallons per minute at a 67°F temperature rise, Navien's new innovative domestic hot water heat exchanger generates even more hot water, allowing customers to run up to three showers and a dishwasher at the same time.

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The ultimate high efficiency combi-boilers do it all...  from the smallest apartments to larger homes

  • AFUE 95% Energy Star certified
  • Backed by the industry’s strongest warranty—10 years on heat exchangers
  • Takes less space than floor standing boiler and tank water heater
  • Can be cascaded with Navien NPE-2 water heater for increased DHW flow demand
  • Easy to use control panel
  • Elegant, clean appearance
  • Ideal for replacements or new construction
  • Optional NaviLink™ WiFi remote control system
  • Optional NaviClean™ magnetic filtration system
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Call Home Mechanics for your heating, cooling, plumbing, and electrical needs or email us directly at We are always ready to provide you with the best HVAC solutions.

Feel free to reach out. We’d be happy to help!

News & Advice

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