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Float switch
A float switch is a safety switch that shuts off HVAC equipment when condensate water rises too high.
Why it matters
It prevents overflow that can damage ceilings and floors.
Where people get this wrong
A float switch shutting off the system is a warning, not a nuisance. The real fix is clearing the drain or correcting the condensate setup.
Real-world example
The AC keeps shutting off on hot days. The tech finds the float switch doing its job because the condensate drain is partially clogged.
Where this hits your build
This affects daily comfort in every room. Problems often show up after move-in when certain rooms run hot, cold, or noisy.
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