A Versatile Gas-Fired Steam Boiler For Your Unique Home. If you need a new gas-fired steam boiler (or for the right company to repair your existing steam boiler) in the Baltimore neighborhood, Quality Refrigeration is here to help. We sell the Lennox® GSB8-E, which features a diverse menu of benefits. GSB8-E BoilerThis steam boiler outshines its competition with an 82.7% AFUE rating* and notable components like a cast-iron heat exchanger and titanium burners. For years of comfortable heat, look at the GSB8-E. Electronic ignition monitors water temperature and ignites the burner only when there is demand 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 can be converted to LP gas Works with traditional radiator and underfloor heating systems Electronic low water cut-off Large steam chest and multiple supply connections help 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 Quality Refrigeration in Baltimore is is here to help you with a new high efficiency boiler! Call us at 410-355-6010 or set up 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.