A Versatile Gas-Fired Steam Boiler For Your Unique Home. If you need a new gas-fired steam boiler (or for an expert to repair your home’s steam boiler) in the Mobile area, Farnell Heating & Air Conditioning Inc is here to help. We have the Lennox® GSB8-E, which boasts a long list of benefits. GSB8-E BoilerThis steam boiler rises above its competition with an 82.7% AFUE rating* and noteworthy components like a cast-iron heat exchanger and titanium burners. For years of comfortable heat, look to the GSB8-E. Electronic ignition oversees water temperature and lights the burner only when needed Vent damper increases efficiency by closing automatically when the boiler turns off Thick fiberglass insulation helps minimize 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 individual 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 Farnell Heating & Air Conditioning Inc in Mobile is ready to serve you with a new high efficiency boiler! Call us at 251-471-2674 or create an appointment online. *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.