Goodman All Fuel Kit for use on combination Gas Furnance/Heat Pump A/C System.Good for 1.5 ton –5 ton systems. This is used when a heat pump and gas furnace are paired together in a home. The kit is necessary to keep the furnace from operating at the same time as the heat pump. With this kit installed, only one or the other can run at a time. Without this kit, the heatpump will not operate properly and will inefficiently run both the furnace and heat pump together in unison when not needed.

• Compatible with Gas, Electric, and oil furnaces