Quote:
Originally Posted by retiredguy123
I think a quart of vinegar is enough. You are just trying to inhibit mold growth. Bleach will probably work better, but some experts say that the fumes can cause corrosion inside the supply fan unit. So, if you use bleach, make sure you don't spill it and that you immediately replace the plastic cap on the condensate drain pipe inside the unit.
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What about the pan underneath the coils where said drain is attached? I tried to clean it, but there is not any room to get at it.