I noticed my HVAC drip pan is get a little rust in the middle. Its made out of galvanized sheet metal and looks like it custom made by the HVAC installer. The rust spot in the middle is small, maybe 3 inches in diameter but I bet Im looking at $300 or more if I ever have to replace the thing. I was thinking of pulling it out and soldering over the spot where the zinc is gone or maybe just paint it with rustoleum or something.
Any suggestions
Jimmie
A dab of epoxy smeared around, maybe? Paint doesn't stick to galv worth a damn.
-- aem sends...
Look at the plastic pans that are placed under washing machines. You can get them at the box stores. It may very well fit your evaporator unit and, if so, you'll never have to worry about rust again.
If you can find a product called condensate pan spray at an HVAC supply house, it would do the trick. I've used it and had good luck with it.
Rustoleum Hammerite paint is self-priming on steel and can be applied to rusty surfaces as long as it's not loose rust. It needs a primer on galvanized surfaces, but you're painting the rusty spot, so I wouldn't worry about it sticking to the intact surface. The rust is presumably starting at the low spot in the pan, so if you take care of that, you won't have to worry about the rust spreading. If it does happen to spread, just spray some more Hammerite on it.
R
Ive used JB weld to fix a car radiator , its lasted 4 years, paint might not even stop rust from growing. How about a quart of silicone tool handle coating, it would give a coat of rubber in 5 minutes work to the whole tray.
The suggestion of a plastic pan is the way to go if you want to replace it, but spraying the inside of such a steel pan with automobile undercoating will protect it from rust for several years. This far more effective than the zinc coating applied.
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