High-EfficiencyENERGY STAR
KNIGHT WHN155
by Lochinvar · KNIGHT series
4.6(47)
Efficiency
95%
AFUE
Output
147k
BTU/hr
Turndown
5:1
modulation
Warranty
12
yr exchanger
The KNIGHT WHN155 is a high-efficiency boiler best suited for larger homes and light commercial. It delivers 95% AFUE efficiency with a 5:1 turndown ratio, backed by a 12 years heat-exchanger warranty.
Key features
- High-output wall-hung
- SMART SYSTEM touchscreen
- Outdoor reset
Technical specifications
Boiler typeHigh-Efficiency
FuelNatural Gas
AFUE efficiency95%
Heat input range31,000 – 155,000 BTU/hr
Heat output147,000 BTU/hr
Turndown ratio5:1
VentingDirect vent (PVC/CPVC)
Dimensions (H×W×D)28" H × 17" W × 12" D
Weight105 lbs
ENERGY STARCertified
Warranty coverage
Heat exchanger
12 years
Parts
5 years
Labour (via installer)
1 year
Installed price range
$6,200 – $8,200
Unit only: $4,200 – $5,200
≈ $123/mo · 60 mo @ 6.99% APR
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For the KNIGHT WHN155