Condensing Boilers

Save space, energy and reduce greenhouse gasses with Navien high efficiency condensing boilers. Low exhaust gas temperatures allow for more cost-efficient venting, and low noise levels offer flexible installation options for any home.



Protect the Environment as You Heat Your Home

Navien primary condensing stainless steel heat exchangers recover extra heat that would be lost in non-condensing boilers to reduce energy consumption and CO₂ emissions that keeps exhaust temperatures very low. So low that economical Schedule 40 PVC pipe can be used for venting in almost all applications.


A new energy-efficient take on an old-fashioned system

All Navien NHB and new NFB-H boilers have Navien’s advanced burner system. The industry’s largest turn down ratio means easier installation with multiple zones 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

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

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

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