Discount Air Vent Thermostat Single Speed

Customer Ratings:
List Price: $19.29
Sale Price: $17.99
Today's Bonus: 7% Off

Air Vent Attic Fan Thermostat

(Amazon alternates the product photo between the model with the white label and the model with the blue label. They are virtually identical attic fan thermostats. "Master Flow" is a product name sometimes shipped.)

As you can see from the Customer Images of the inside assembly, this is a simple device. It's designed to have the incoming electric line (typically a 14/2 non-metallic cable w/ground) enter one end, and the outgoing cable exit the other end. It doesn't matter which is which. An instruction sheet is included but wiring is as easy as installing a light switch. I.e., twist the incoming white wires together with a wire nut, tighten the incoming ground wires under the green grounding screw, and attach each of the incoming black wires to one of the black wires from the switch (doesn't matter which one).

The instructions recommend setting the thermostat to 105 degrees; that's when the fan would come on. It would then turn the fan off at 97 degrees i.e., 8 degrees less than the thermostat setting. Device has an adjustable dial (60 to 120 degrees Fahrenheit). Our fan ran well into the evenings, even when the outside temps dropped into the 70's or lower. I then set the thermostat to 110 degrees, but it never came on. After setting it to 107 degrees, it seems to turn on/off as it should. The point is, you may have to tinker with the setting.

A protruding sheet metal "gripper" on each side of the base slips into corresponding holes in the cover to hold it in place when you're through wiring. On the unit I installed, the cover isn't held as securely as it would have been with a couple of screws. It doesn't take much effort to pop one side of the cover off the base. You might want to install the thermostat somewhat away from the fan so years of vibration won't loosen the cover.

I bought this thermostat at our local Home Depot and paid a about a third more than the Amazon price, but I wanted it in a hurry...

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My faithful attic fan stopped working after 20years of fathful service. I by passed the olds thermostat, and the fan worked, must be the thermostat. Seached on line, got confused went to Amazon.com ordered, replaced attic thermostat--good to go. Amazon also has replacement fan motoers.

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Thermostat worked fine to replace my defective thermostat. Didn't fit inside my fan like the original did, so I mounted it next to the fan no big deal. Case is a bit odd the cover snaps on instead of being attached by screws. Once it was mounted, only one side of the snaps would engage, however this was enough to hold the cover in place. Deducting one star for this.

Honest reviews on Air Vent Thermostat Single Speed

This is the perfect thermostat for my home theater system. It is fully adjustable and easy to install.

It cost less than half of what other audio/video thermostats sell for, and works great!

I don't know about attic fans, but I would sure recomend this product for home entertainment cabinet cooling applications.

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Amazon came through again. This in line thermostat works great and it is easy to set. I am using it to automatically control an exhaust fan in my audio visual equipment closet.