Drain line or float switch?

Old 07-15-14, 10:56 AM
bobed2121's Avatar
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Drain line or float switch?

My current setup looks like this. After some research should there be a float switch in place in the secondary drain line as per the illustration?
If you notice in the image there is the line coming off the drain pan. The secondary line comes out of the unit and taps into the drain pan line then runs out of the side of the house high on the wall but still below the furnace. The primary line runs out (by itself) into the wall then down to just a few inches off the ground and drain into the dirt.
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Old 07-15-14, 11:03 AM
PJmax's Avatar
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A float switch should be used on the primary drain line. It's that line you want to know when it's clogged.

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