A Versatile Gas-Fired Steam Boiler For Your Unique Home. Oak Grove Heating & Air Conditioning in Hattiesburg has the ideal gas-fired steam boiler to keep your home warm and comfortable for years to come. The Lennox® GSB8-E delivers exceptional benefits. Our team is ready to install yours, or help you fix your home’s 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 provide cozy, comfortable warmth for years to come. Electronic ignition controls water temperature and ignites the burner only when needed Vent damper boosts efficiency by closing automatically when the boiler shuts off Thick fiberglass insulation minimizes off-cycle heat and energy loss Burns natural gas or convertible to LP gas Compatible 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 Oak Grove Heating & Air Conditioning at 601-292-9763 for all your boiler-related needs in the Lamar County 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.