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JRMichler · 10-21-12, 02:48 PM

When the dehumidifier in my shop died, I went down to Walmart and bought an Energy Star replacement. Plugged it into the Kill-A-Watt and waited.

A week later, it had produced 8.0 pints of water, consuming 30.34 KwH in 166 total hours. That's only 0.26 pints per KwH.

Then I set it to continuous run, and plugged it in for an hour or two now and then. Not real scientific, but as long as the humidity is around 50%, I'm happy. Results: 6.5 pints in 13.8 hours total running time, with 5.08 KwH used. That's 1.3 pints per KwH, almost 5 times more efficient.

The efficiency is low because I heat the shop to 65 deg F. It's insulated so well that the temperature peaked at 68 deg F last summer.

I'll put it on an external humidistat before next summer.

10-21-12, 02:48 PM	#1
JRMichler Apprentice EcoRenovator Join Date: Apr 2012 Location: Phillips, WI Posts: 109 Thanks: 10 Thanked 30 Times in 25 Posts	Dehumidifier inefficiency When the dehumidifier in my shop died, I went down to Walmart and bought an Energy Star replacement. Plugged it into the Kill-A-Watt and waited. A week later, it had produced 8.0 pints of water, consuming 30.34 KwH in 166 total hours. That's only 0.26 pints per KwH. Then I set it to continuous run, and plugged it in for an hour or two now and then. Not real scientific, but as long as the humidity is around 50%, I'm happy. Results: 6.5 pints in 13.8 hours total running time, with 5.08 KwH used. That's 1.3 pints per KwH, almost 5 times more efficient. The efficiency is low because I heat the shop to 65 deg F. It's insulated so well that the temperature peaked at 68 deg F last summer. I'll put it on an external humidistat before next summer.