Best REFURBISHED! C.A.P TMP-DNE Day/Night Blower A/C Fan Temperature Deals

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List Price: $84.95
Sale Price: $50.46
Today's Bonus: 41% Off

Great product, it is made in the USA. Works great. keeps my temps consistent (+/4*), I use it along with a fan speed controller to lower the noise of the fan when needed. Overall a great product.

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So this controller works exactly as advertised. I use it to control 1 small 8" duct fan and a large 10" centrifugal fan that cools down my home greenhouse at "night". During the "day" this controller works in my space as an emergency limit switch should my ventilation / ac fail to lower the temperature below 90F. Quotations around "night" and "day" because in my case "night" and "day" are reversed in my greenhouse as is the case for many plant growers.

If you are thinking of buying this you should know a few things.

(1) To control larger fans capable of being speed controlled only (>400CFM) that operate for longer periods I recommend the TMP-VSc unit over this one. The TMP-VSc automatically winds up and down the fan based on how close you are getting to the target temperature value. The VSc unit is only a little more expensive than the DNe, and in this specific scenario it will save you $ on your electric.

*Most in-line duct fans can not be speed controlled. Some lower quality centrifugal fans such as C.A.P.'s valueline are very noisy when speed controlled. Vortex fans are not noisy and can be speed controlled, just my experience.

(2) You must consider your source air temperature (T_source), source humidity, and set temperature (T_set). FOR GREENHOUSES ALWAYS KEEP T_SETT_outside and the outside air has undesirably low humidity either your going to put your humidifier through a workout or your space is going to get too dry or both.

Best Deals on REFURBISHED! C.A.P TMP-DNE Day/Night Blower A/C Fan Temperature

Got this to automate the day/night temperature differential in my grow tent. It does a good job. I've got it connected to a heater at the moment and it does a great job. I gave it only 3 stars because there is only a 3-4 degree F variance when I place it on 7. Other than that minor problem this is a great unit!

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Not much to be said about this controller. Arrived on time and works great. No rocket science involved with setting this baby up. Have my 6" inline fan plugged in to it and use it to vent hot air from my room. You can also plug an a/c unit into it if you wish instead of a fan.Either way it's worth every penny.

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This is to control an electric heater in our garden shed. It's great because we can use it for both winter heating and summer cooling!