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converting from oil furnace air heat to heat pump with furnace as my back-up
I want to replace my central 5 ton AC with a 5 ton Goodman high efficiency two stage 5 ton heat pump and make it my primary source of heat. Currently my oil fired lennox furnace is my primary source and shares the the blower with my central AC and i want to make this my back-up heat source. I know I have to change my indoor coil and line and make the blower variable speed, but do i have to change the control board to make everything compatible? Any suggestions for this conversion would be very helpful.Thank you