Lochinvar KNIGHT WHN155 155 MBH Wall-Hung Combi Boiler

The Lochinvar KNIGHT WHN155 is a 155K BTU residential combi boiler. The "KNIGHT" line is Lochinvar's premium wall-hung combi positioning. Provides both space heat (hydronic) and DHW from a single appliance.

Specs: 155,000 BTU input, AFUE 95% (condensing), 4.6 GPM DHW at a 70°F rise, modulating burner with 6:1 turndown ratio, stainless steel heat exchanger, PVC condensing venting. 15-year warranty on heat exchanger.

The KNIGHT 155 sits between the smaller KNIGHT 110 and larger KNIGHT 199 in the combi range. Sized for medium homes (1,500-2,500 sq ft). About $8,500-$11,000 installed depending on hydronic system modifications.

Lochinvar's positioning: hydronic specialist with strong residential combi presence. Service network strongest in the Midwest and Northeast.

Right buyer: medium home replacing aging boiler + water heater with single combi in markets with established Lochinvar dealer presence.