A Versatile Gas-Fired Steam Boiler For Your Unique Home. Red Dog Cooling, Heating, & Plumbing in Selbyville has the perfect gas-fired steam boiler to keep your home snug and comfortable season after season. The Lennox® GSB8-E provides exceptional benefits. Our friendly staff is here to install yours, or help you fix your existing steam boiler. GSB8-E BoilerThis boiler is superior to other standard-efficiency boilers with it’s 82.7% AFUE* rating, cast-iron heat exchanger and titanium burners. The GSB8-E will provide cozy, comfortable warmth for years to come. Electronic ignition controls water temperature and turns on the burner only when needed Vent damper bolsters efficiency by closing automatically when the boiler is off Thick fiberglass insulation reduces off-cycle heat and energy loss Burns natural gas or convertible to LP gas Will work with traditional radiator and underfloor heating systems Electronic low water cut-off Large 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 Contact Red Dog Cooling, Heating, & Plumbing at 302-436-2922 for all your boiler-related needs in the Selbyville 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.