A Versatile Gas-Fired Steam Boiler For Your Unique Home. When you’re shopping for a new gas-fired steam boiler (or for the right company to fix your current steam boiler) in the East Hanover neighborhood, Effective Service Group, LLC. is here for you. We have the Lennox® GSB8-E, which features a long list of benefits. GSB8-E BoilerThis steam boiler outshines 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, consider the GSB8-E. Electronic ignition oversees water temperature and turns on the burner only when needed Vent damper increases efficiency by closing automatically when the boiler shuts off Thick fiberglass insulation helps minimize off-cycle heat and energy loss Burns natural gas or can convert to LP gas Works 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 Effective Service Group, LLC. in East Hanover is is here to help you with a new high efficiency boiler! Call us at 973-884-0065 or schedule 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.