Bests & Worsts Reviews from Amazon

I purchased this fan to augment the flow from an under performing basement vent. This made a huge difference. My basement is finished, but gets such poor airflow that it was about 15 degrees cooler than the rest of the house. With this fan operating it is about the same temperature as the main floor. I purchased one of these units as a trial and just ordered a second for another basement vent. The ability to set the fan to come on when the heating or cooling operates is nice, that way it augments the airflow. It does take quite a bit of tweaking to set properly. I have also turned the fan on; it pulls air from the rest of the house and makes a big difference as well. The fan uses a thermocouple in the airflow to sense when the heat or AC is operating. I have a thermostat that runs the furnace fan to circulate air without operating the heat or AC. I have doubts about this fan being able to sense this airflow. The fan is fairly noisy. If you take a pair of dikes and cut the fan covers off of the rear of the unit, the airflow improves by about 50% and the noise is reduced about 75%. My fan is located right above the couch in the TV area of my basement. With those covers removed the fan noise is easily ignored. I do not notice it at all. The plastic shell of this unit has small circular pieces on the short sides. They line up perfectly for screws to mount the unit in a ceiling vent. I did so and it works just fine. The LED indicators on the unit are very bright. I agree with one of the other reviews: a bit of duct or electrical tape can cover those up nicely. The power supply that comes with the unit is junk it seems to weight about half a pound and gets fairly hot. I spent $7 on a level 5 energy efficiency rated switching power supply from Digikey - part number T983-P5P. The power supply needs to be 12V with at least 500mA output. The plug is standard DC power plug: center positive, 5.5 mm outer diameter, 2.1 mm inner diameter. * Amazon and Digikey carry DC extension cords that fit the above connector. I bought part number CP-2213 from Digikey. Has the same right angle connection of the original power supply.