Type of Furnace to buy

[fred1949]

I would like some advise as to what furnace to buy. I have a FHP Geothermal with horizontal lines. Should I spend the money & get another geothermal or just replace the FHP (Florida Heat Pump) with a conventional efficient furnace. I am about 60 if that figures into the saving quotient. Any suggestions on brand names would help.

Thank you,
Fred