The Rinnai Q Series is a fully modulating condensing boiler with an efficiency rating of up to 95.4% AFUE. The five models of the Q Series range in size from 85,000 to 205,000 maximum BTU heating inputs, and all five have earned the Energy Star label. The Q Series is approved for room and closet installations and is designed to be used with a separate indirect hot water source, except for the Q175V model, which provides both heat and domestic hot water. It features a spark ignition and a stainless steel heat exchanger, with a variety of venting options. The Q Series is available in natural gas or propane, with kits available for easy field conversion.
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