Quote:
Originally Posted by masraum
In my experience, the AC should have a drain. Then there should be an overflow pan that drains in a very obvious place, like in front of a door or window so you can't miss it. Then yes, as a third line of defense there should be a float on a switch. I can't imagine it getting that far.
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Code. A secondary drain line is needed to drip on top of a window, usually the kitchen to tell the owners that the primary line is clogged. Why is 3/4" allowed is what I always ask myself.