Read the findings of a study in which Gas Technology Institute (GTI) and CanmetENERGY’s Renewables and Integrated Energy Systems Laboratory (RIES) assessed the energy performance of a modulating propane-fueled direct vent (DV) wall furnace system. DV wall furnaces and room-to-room air ventilators were installed in a single-detached house, and their energy performance was compared with the performance of a condensing central furnace in an identical house next door.

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For a condensed look at the report’s findings, simply download the fact sheet here.

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