I have a sump pump in my basement that has a tethered float switch. The sump is not deep enough for the switch to turn on so I have to go down there and turn it on manually every time it rains hard. If I put a vertical float switch with a piggyback plug/switch will it turn on the sump pump?

2 Answers 2


Try this fix, shorten the tether so the float will turn on/off quicker, or replace the pump with a one that has a vertical mounted float switch. I got rid of my tethered float switch pumps for ones with the vertical switch. They work great with just a short rise in water level.


Sure, if you secure the original float in the 'on' position and it doesn't experience corrosion due to its newly stationary duty. I'd be concerned about having a second possible point of failure in a system protecting so much value.

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