CombiENERGY STAR★ Best-selling combi
NCB-150H Combi
by Navien · NCB-H Combi series
4.6(142)
Efficiency
95%
AFUE
Output
114k
BTU/hr
Turndown
11:1
modulation
Warranty
10
yr exchanger
The NCB-150H Combi is a combi boiler best suited for townhomes and condos needing compact combi heating. It delivers 95% AFUE efficiency with a 11:1 turndown ratio and 4.5 GPM of domestic hot water, backed by a 10 years heat-exchanger warranty.
Key features
- Dual stainless heat exchangers
- On-demand DHW
- NaviLink Wi-Fi
- Low NOx
Technical specifications
Boiler typeCombi
FuelNatural Gas
AFUE efficiency95%
Heat input range18,000 – 120,000 BTU/hr
Heat output114,000 BTU/hr
Turndown ratio11:1
Domestic hot water4.5 GPM
VentingDirect vent (PVC/CPVC)
Dimensions (H×W×D)28" H × 17" W × 12" D
Weight82 lbs
ENERGY STARCertified
Warranty coverage
Heat exchanger
10 years
Parts
5 years
Labour (via installer)
1 year
Installed price range
$5,000 – $6,600
Unit only: $3,200 – $3,800
≈ $99/mo · 60 mo @ 6.99% APR
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For the NCB-150H Combi
NCB-150H Combi reviews
5.0
· 1 reviewsVerified
Endless hot water
Our NCB-150H combi keeps up with two showers running. The app lets me check status from work.
Sophie L. · Laval, QC · Jan 2026