Rated 4.0 out of 5 by 127
Rated 5.0 out of 5.0 by DB Great little switch for the price
Can't beat it for the price. Easy to mount with just 4 screws and a hole for the air to pass through to the sensor. Has a switch for either a 3 or 7 degree differential to start and stop the fan. Also has a variable control to set the "On" point of the fan...switchable to work with hot or cold air. Overall great idea. Remember, you need to screw this directly to the duct work that you are using to sense the temperature change. Will work on flat or round ducting. I used this to exhaust hot air coming off of the back of a wine room chiller and it works great...allowed me to pull the hot air from the back of the chiller without modifying the chiller. Had to do this because the chiller is in a closet and would heat up the closet, if the hot air wasn't removed, causing the chiller to be inefficient.
September 27, 2016
Rated 2.0 out of 5.0 by SLB Plug-in thermostat switch has limited functionality
I installed this plug-in thermostat switch with a 10" inline duct booster fan in order to turn the booster fan on and off with the air conditioning. The fan was installed in the attic of my town home in order to provide better HVAC airflow to the 2nd floor. In hot weather, the temperature in the attic ranges from 80's at night to 120 degrees during the day. The extreme temperature variations make it difficult to find a setting for the thermostat that will turn the fan on and off with the a/c. So far the thermostat setting either keeps the fan on all the time or fails to turn it on when the a/c comes on.
I have determined that in hot weather, it is advantageous to have the duct fan stay on all the time. When the a/c is not running there is still cool air in the duct work, so having the fan run continuously between the a/c cycles actually helps cool the 2nd floor.
I am considering a bluetooth or wi-fi controlled outlet instead of the thermostat. That would allow me to turn the fan on or off with a smartphone rather than having to crawl up into the attic to adjust the thermostat.
July 14, 2016
Rated 5.0 out of 5.0 by rob Great purchase
The thermostat works as well as I had hoped that it would. Figured on paying three times what I played for it. Use it in my wood stove room and the thermostat turns on a plug in blower when the temp gets up there where I have it set, and pushes the warm air throughout my home.
Thanks for a good product at a good price
October 5, 2016
Rated 1.0 out of 5.0 by john Duct fan thermostat
Not very consistent or reliable, not sure why it doesn't do a better job of sending temps. Calibration very sensitive, unable to fine tune.
October 4, 2016
Rated 3.0 out of 5.0 by CoolHandNorm Handy, but short lived.
I installed one of these in a small closet which houses several pieces of electronic equipment. The closet is vented to the attic with a small in-duct fan controlled by this thermostatic switch. The setup works very well at keeping my equipment at a safe working temperature. Unfortunately I had to replace the first switch after about three summers when it recently died. This replacement switch seems to be a slightly re-designed so I am hoping for a longer service life this time around.
September 6, 2016
Rated 5.0 out of 5.0 by HarryCoyote life-test application
These two products worked perfectly to cool a compressor that is being used in our product's life test.
September 13, 2016
Rated 5.0 out of 5.0 by DIYer Other uses!
Set up for an outdoor bird cage. The Ductstat turns on a heated perch and a ceramic heat lamp on cold days and nights. Romeo likes it!
April 20, 2016
Rated 5.0 out of 5.0 by Butternut Best purchase Ever
We had an issue with our lower level rec. room being cold. It is around 1000 sq ft. with 4 heat vents that are placed in the ceiling tiles. The heat not only stayed at the top of the ceiling, but also above the ceiling tiles. We placed 4 , 6in in line duct fans in the ducts, then took an 8in in line duct fan and placed it vertical and taped a piece of screen on the intake (back) of fan and placed the output on a ceiling tile, (had to place a piece of veneer wood to support fan, this fan is used to draw the heat out of the ceiling and blow down, we ran extension cords (since these were all corded), and placed the Ductstat on the heat trunk, plugged into the outlet, then plugged a 6 placed power strip into the Ductstat and plugged all the extension cords in, We turned on the furnace, and regulated the temperature on the Ductstat, it ran all the fans perfect. Living in Michigan the winters are cold and our lower level would be in the higher 50's, With the furnace set on 70, the lower level is now a nice 69, It works perfect. The fans run longer once the furnace blower stops, but that's perfect. Keeps the air circulating longer, we have 2 knee walls that are exposed foundation, which we will insulate soon, that also will help in keeping the lower level wonderful too
April 8, 2016