A Versatile Gas-Fired Steam Boiler For Your Unique Home. If you need a new gas-fired steam boiler (or for someone to repair your current steam boiler) in the Liberty and the Kansas City Metro Area community, Air Unlimited Heating & Cooling is here to help. We sell the Lennox® GSB8-E, which comes with a long list of benefits. GSB8-E BoilerThis steam boiler is superior to 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 at the GSB8-E. Electronic ignition monitors water temperature and turns on the burner only when it needs to Vent damper boosts efficiency by closing automatically when the boiler turns off Thick fiberglass insulation minimizes off-cycle heat and energy loss Burns natural gas or can be converted to LP gas Compatible with traditional radiator and underfloor heating systems Electronic low water cut-off Hefty 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 Air Unlimited Heating & Cooling in Liberty and the Kansas City Metro Area is is here to help you with a new high efficiency boiler! Call us at 816-286-7258 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.