The Comfortmaker SoftSound IIS 90 gas furnace offers two-stage operation with a conventional PSC blower motor. It's certified for one- or two-pipe direct-vent installation and features 92% AFUE. With a profile of 40 inches for installation in tight places, the furnace can be installed in up-flow, down-flow, horizontal-left or horizontal-right configurations in natural gas models from 50,000 through 125,000 Btu/hour input. LP gas conversion kits also are available.

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