CondensingENERGY STAR
NHB-150 Heating Boiler
by Navien · NHB Heating Boiler series
4.6(49)
Efficiency
95%
AFUE
Output
142k
BTU/hr
Turndown
15:1
modulation
Warranty
12
yr exchanger
The NHB-150 Heating Boiler is a condensing boiler best suited for mid-to-large homes with hydronic heating. It delivers 95% AFUE efficiency with a 15:1 turndown ratio, backed by a 12 years heat-exchanger warranty.
Key features
- 15:1 turndown
- Heat-only condensing
- Pairs with indirect tank
Technical specifications
Boiler typeCondensing
FuelNatural Gas
AFUE efficiency95%
Heat input range12,000 – 150,000 BTU/hr
Heat output142,000 BTU/hr
Turndown ratio15:1
VentingDirect vent (PVC/CPVC)
Dimensions (H×W×D)28" H × 17" W × 12" D
Weight78 lbs
ENERGY STARCertified
Warranty coverage
Heat exchanger
12 years
Parts
5 years
Labour (via installer)
1 year
Installed price range
$4,600 – $6,200
Unit only: $3,000 – $3,800
≈ $91/mo · 60 mo @ 6.99% APR
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For the NHB-150 Heating Boiler