[masraum]

Originally Posted by porsche4life

Neat idea, but I don’t know that I’d want it killing my AC in the summer.

I’ve thought about putting flood sensors in our secondary drain pans though, that way I’d get a notification that the system was plugged and leaking into the secondary drain and know to unclog it.

I think the theory is that if drain#1 clogged, and then you didn't notice drain#2 or it was also clogged, then you need some sort of notification that you've got a problem. That notification is "holy carp, the AC just stopped!" I think the alternative is "holy carp! The ceiling just collapsed."