The Independence® is a residential, gas-fired boiler for steam systems. It is available for either natural or LP gas and has AFUE ratings of up to 82%. Its large water volume and durable cast iron sections make it an ideal replacement for even the most challenging steam heating system. Standard equipment on the Independence® includes cast iron push nipples that provide a permanent, watertight seal between sections, Honeywell operating controls, vent damper and a rugged steel base assembly. A deluxe, insulated, powder-coated steel jacket completely encloses gas valves and burners and reduces boiler heat loss. The exclusive Independence® PV models have been specifically configured to operate as direct vented products for installation in homes with a damaged or irreparable chimney.