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Dehumidifier Switch Controls Bathroom Fan
“Next time you see an old dehumidifier going to the dump, grab it,” says handyman Herman Kiefer of Sault Ste. Marie, Ontario. Kiefer says there’s a valuable component inside dehumidifiers that has a great secondary use. What he’s referring to is the control switch called a humidistat.

Kiefer says that’s the switch that turns the dehumidifier on and off depending on the humidity in the room. Always a thinker and a tinkerer, Kiefer removed the humidistat from an old dehumidifier and wired it in series with his standard on/off bathroom fan motor. It now turns the fan on during a shower when humidity is high and automatically shuts it off when humidity returns to normal.

Says Kiefer, “It was an easy installation because I was able to mount the switch directly to the motor plate of the fan and wire it in place. I adjusted the switch by taking my normal 10-minute shower and turning the switch knob until the fan came on, then replaced the cover. Now the fan just runs until the humidity goes down, not for two hours because I forgot to turn it off. I know you can get this feature in new, higher priced fans, but what’s the fun in that?” Kiefer says.

Kiefer also wired a pull chain-type switch from a discarded ceiling fan in parallel with the humidistat. “I can use it to turn the fan on for reasons other than humidity by pulling the chain.”    

Contact: FARM SHOW Followup, Herman Kiefer, 273 Eastern Ave, Sault Ste. Marie, Ontario Canada (ph 705 575-5607).




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2016 - Volume #40, Issue #4