Best Easy Heat EH-38 Freeze Thermostatically Controlled Valve and Pipe Deals

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List Price: $19.99
Sale Price: $16.17
Today's Bonus: 19% Off

I bought this thermostat control for use with a heater for keeping a battery warm during the winter. Last winter the battery heater was always on to keep the battery warm to start an automatic generator. The heating during times when the temperature warmed up resulted in a damaged battery. This thermostat is just the right temperature range. After reading the negative review, I tested all three devices by cycling the temperature from 10-60 degrees F several times to verify they are working correctly.

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I purchased this device to back up the furnace in my cabin. I have it connected to an electric heater in the basement. So far my furnace has not failed, but I did have some air leaks that dropped my basement below 38 deg. and the device turned on as it should. Gives me peace of mind to know that as long as the electricity is on I will have some type of heat. I have it connected to a 1500 watt heater and there were no problems with mine. I have tested it several times by placing it outside in the cold and it has always worked.

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I recorded temperatures with a wireless weather transmitter and it cut on and off around 38 and 50 degrees as advertised. Stopped working correctly after about 3 weeks, cutting on and off somewhat randomly at different temperatures. Once it started to malfunction it never stayed on long enough to warm the pump house. For something that often controls critical heat you would think reliability would be better.

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I bought the controller to operate a heat cable. It came on when the temperature got below 35 degrees but then it would turn on and off at below freezing temperatures for no reason at all. Luckily what I was using the heat cable on was not very critical.

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I bought two of these one that turns on a fountain to keep a small pond from freezing, and another to regulate a heater to keep a small greenhouse temperature above freezing. Well, the first one works just fine for my purposes; it turns on around 36 degrees or so and turns off when the temperature outside gets to about 40, but the second is unusable for keeping the greenhouse in the 40 degree area. It won't turn on until it's about 32 and shuts off before it gets to 40. I was expecting a little margin of error (the literature says on at 38, off at 50), but not this much. So neither one really operates as advertised.