Commercial
KNIGHT XL 400
by Lochinvar · KNIGHT series
4.5(14)
Efficiency
94%
AFUE
Output
375k
BTU/hr
Turndown
5:1
modulation
Warranty
10
yr exchanger
The KNIGHT XL 400 is a commercial boiler best suited for commercial mechanical rooms. It delivers 94% AFUE efficiency with a 5:1 turndown ratio, backed by a 10 years heat-exchanger warranty.
Key features
- Floor-standing commercial
- Cascade controls
- High capacity
Technical specifications
Boiler typeCommercial
FuelNatural Gas
AFUE efficiency94%
Heat input range80,000 – 399,000 BTU/hr
Heat output375,000 BTU/hr
Turndown ratio5:1
VentingDirect vent (PVC/CPVC)
Dimensions (H×W×D)47" H × 24" W × 28" D
Weight290 lbs
ENERGY STARNot certified
Warranty coverage
Heat exchanger
10 years
Parts
5 years
Labour (via installer)
1 year
Installed price range
$12,000 – $18,000
Unit only: $9,000 – $12,000
≈ $238/mo · 60 mo @ 6.99% APR
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For the KNIGHT XL 400