GDS8 Series 1-Stage
4-Speed 80% AFUE
Down-Flow

For down flow installations only. For up flow applications please see GMS8 Series furnaces. These furnaces are set up for natural gas with an additional option for a propane gas conversion kit. This gas furnace has an AFUE rating of 80%, which means that 80 cents of every $1.00 of heating energy expense warms your home.

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