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The KNIGHT Heating Boiler is a champion of high efficiency. With a 93% AFUE rating, you can rest assured that 93¢ out of every energy dollar goes directly into heating your home. That’s well above ENERGY STAR standards, and its efficiency goes up to an astounding 98.6% in low-temperature radiant applications!

Designed and built to commercial-grade standards, the KNIGHT guarantees you the robust reliability Lochinvar is famous for. You’ll have the peace of mind that comes with an 85-year history of proven performance—not to mention a full 12-year limited warranty.

Compact and attractive—not to mention amazingly quiet—the KNIGHT fits in small spaces most other boilers will not. You’ll be amazed how versatile and convenient your KNIGHT Heating Boiler can be.

The unique SMART SYSTEM™ Operating Control makes the KNIGHT simple to program, so you can maximize comfort and efficiency in your individual home. With advanced self-diagnostic abilities and an easy-to-read LCD display, the KNIGHT lets you know if service is necessary. And, all controls are password protected.

No other heating boiler comes with so many innovative standard features.

Burnham CHG condensing boilers achieve 94+% efficiency through our uniquely designed heat engines. These sectional, cast aluminum designs use the heat in the exhaust gases from the boiler’s combustion process to preheat the water as it
enters the boiler, thus capturing
energy that otherwise would be lost.

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Ultra Series 3 Gas Boiler

Ultra Series 3 delivers peace of
mind, unmatched comfort, and
immediate payback in energy
savings.