Explore our line of award-winning residential gas-fired boilers. Compatible with natural gas or liquid propane. Water and steam systems available.

Shop and save now on the top high efficiency gas boilers available from leading brands including Weil-McLain, Lochinvar, and Burnham.

Weil-McLain means warmth and comfort. Our energy-efficient, high-quality gas and oil-fired boilers are designed to fit any size residential application.

U.S. Boiler’s ES2 cast iron gas-fired boiler, which achieves an 85% AFUE rating, was recently recognized as a Consumers Digest Best Buy. Our super-efficient condensing gas boilers, such as the Alpine and K2 boilers, offer AFUE ratings as high as 94-95%.

An integral part of the Dunkirk product family is our gas- and oil-fired boilers for residential and commercial buildings. High efficiencies, easy maintenance and installation features, along with limited lifetime warranties, make our gas and oil boilers the preferred choice of contractors and homeowners alike.

Cutting-edge condensing technology from Viessmann offers optimum energy utilization, resulting in maximum savings for you. A gas-fired condensing boiler is one of the most economical and clean ways to heat your home or commercial property, and it can reduce your monthly heating bills and environmental footprint.

U.S. Boiler offers a broad selection of ENERGY STAR®-certified gas-fired residential boilers, high efficiency oil-fired boilers, condensing boilers, three-pass oil-fired steam boilers, hot water heaters, and radiators.

The Alpine condensing gas boiler is one of the most efficient water boilers on the market. Efficiency: 95% AFUE, ENERGY STAR® certified.

The EG is a versatile gas cast-iron boiler for water or steam applications. It's durable, high efficiency and easy to install and service. Learn more.

These cutting-edge models use a gas-fired condensing system to heat your client’s home more efficiently, effectively lowering their utility bills and the home’s carbon footprint. These boilers can bring an Annual Fuel Utilization Efficiency (AFUE) rating of as high as 98 percent!