Everyones Home is Unique and Central Air Inc Has the Versatile Gas-Fired Steam Boiler For You. If you need a new gas-fired steam boiler (or for an expert to fix your existing steam boiler) in the Portland neighborhood, Central Air Inc is ready to help. We offer 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, consider the GSB8-E. Electronic ignition monitors water temperature and ignites the burner only when there is demand Vent damper increases efficiency by closing automatically when the boiler is off Thick fiberglass insulation helps minimize off-cycle heat and energy loss Burns natural gas or convertible to LP gas Will work 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 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 Central Air Inc in Clackamas is is here to help you with a new high efficiency boiler! Call us at 503-389-5307 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.