no argument on keeping an old system limping along. my old furnace (just removed, still working, but replaced with a heat pump) was a 28 year old goodman. it needed about one small repair a year in the last three years (capacitor, inducer motor, and pressure switch hose). when you start learning about maintaining them you realize the old units are extremely simple collections of parts, you can swap parts forever as long as it's a common unit, ship of theseus style. all parts are designed to be modular and come out the access panel side with just a few screws. and there were third party repair parts available for it, they made so many. just a tankIf we actually cared about GWP instead of chemical company profits we'd have switched to R290 long ago.
I'm still sorry I purchased a R410 replacement system instead of just replacing the leaking coil & refilling with R-22 (or RS-44b)
if your local hvac companies overcharge for small repairs like the three I had, then I guess lean towards replacement, but I wouldn't want to reward that business model myself
refrigerant leaks are the one area where you should go "hmm..." but if actually addressing the leak and not just recharging, go for it, keep them running forever
Statistics: Posted by z0r — Sun May 26, 2024 1:26 am — Replies 55 — Views 6381