Everyones Home is Unique and Keystone Heating & Air Conditioning Co., Inc Has the Versatile Gas-Fired Steam Boiler For You. Keystone Heating & Air Conditioning Co., Inc in Racine has an excellent gas-fired steam boiler to keep your home cozy and comfortable for years to come. The Lennox® GSB8-E provides exceptional benefits. Our team is ready to install yours, or help you fix your current steam boiler. GSB8-E BoilerSetting it apart from other standard-efficiency boilers, this boiler earned an 82.7% AFUE* and features a cast-iron heat exchanger and titanium burners. The GSB8-E will deliver cozy, comfortable warmth heating season after heating season. Electronic ignition oversees water temperature and turns on the burner only when needed Vent damper bolsters efficiency by closing automatically when the boiler turns off Thick fiberglass insulation minimizes off-cycle heat and energy loss Burns natural gas or can be converted to LP gas Will work with traditional radiator and underfloor heating systems Electronic low water cut-off Big steam chest and multiple supply connections work to eliminate noise Available in seven different sizes to fit your home’s unique needs 12-year limited warranty on heat exchanger, 1-year limited warranty on remaining covered parts Efficiency Rating (AFUE): up to 82.7 Product Brochure Contact Us to Learn More Call Keystone Heating & Air Conditioning Co., Inc at 262-358-9468 for all your boiler-related needs in the Southeast Wisconsin area. Or, schedule an appointment with our online scheduler. We look forward to serving you! *Annual Fuel Utilization Efficiency (AFUE) measures how efficient the appliance is in converting its fuel’s energy into heat over the course of a year.