My old compressor in a 2 zone split system needs to be replaced. It's almost 20 years old, 2 1/2 ton unit that the tech says is shot. Tried a put a hard start kit on, and recharged, but it's just not blowing cool never mind cold.
So it's a new unit I guess. If I get a 13 seer, do I need a new coil too. One tech said just change the orifice or valve on the coil, other said I have to change the whole coil inside. Or should I try to locate an older but new 10 seer to be compatible with the old coil...if can find one.
I just want an honest opinion. Thanks.