I need to replace my 2.5 ton air handler unit because the condensate pan is rusted out and water is dripping from the attic. The 2 ton compressor hasn't lost any freon in the past year and is working fine, but I'm thinking about replacing it at the same time because both units were installed in 1985. If I do, should I replace the existing unmatched system with a 2.5 ton compressor and 2.5 ton evaporator?
It was suggested that I consider replacing the existing heat pump with a regular compressor and use resistance heat from the 10 KW unit in the air handler. I'm certainly no expert but I thought that here in New Orleans (where the average winter low temperature is 46 degrees) is an idea place to use a heat pump. I would appreciate some advice on any of these issues.