FL AC unit is making me hot
Upon discovering this awesome forum, I read through the existing posts and learned a lot. Unfortunately, my problem seems to have a mixture of many symptoms. About 2 years ago, my Rheem (Mod# RBHA-21J11NFCAI est 12 YO) heat pump (I think) started malfunctioning- specifically freezing up in the summer. The first repairman advised of a 'slow leak' and added 1lb of freon. That lasted till the next summer when the start capacitor /relay were replaced. Two months later, a start kit was added which worked for another couple of months. The next and different technician (after $300 in start kits) diagnosed a bad exterior fan motor (caused by undetected excessive lint build up on the outside radiator thingy), the replacement of which fixed the problem for another few months.... Last week, upon freezing up, I called the guy again who suggested I change the inside filter. BTW, I have gotten good at quickly turning off the air and turning ON the inside fan to aid in defrosting the frozen parts. Changing the filter got me another week of trouble free operation even in the 95* weather. Over the past several days however, I have been having to 'defrost' the system each evening to get us comfortably through the night. Upon removing the access cover from the unit in the attic, I discovered that while the air fins are surprisingly clean and clear, everything made of metal is rusty and falling apart. The copper has signs of corrosion explaining the slow leak.
Surprisingly enough, the freon pressure has held over the two years since the one pound was added...
Other than the obvious need for replacement, is there anything else I can do to keep it going till my tax refund arrives? Then, I'll need to consider either replacing components or converting to a new system.... Ideas?