DC HOUSE 30 Watt Solar Attic Fan Solar Powered Roof Exhaust Fan Up To 3000 Sq Ft,2500 CFM Metal Shell Solar Vent With Brushless Motor, Hail and weather resistance

took about ten minutes for the install as long as you have all the tools with you,its heavy and large but works like a charm,pulled hot air out of the attic immediately and our small attic space and home had an immediate temp difference on the inside,i would venture to guess about 5 degrees but smaller spaces would probably cool down alot more,this is probably one of the better purchases i have made for the house ever.

La calidad del producto es muy buena, la eficiencia del panel solar es ideal, no lo pudimos instalar empotrado en el muro por el grosor del block, pero es un producto que sin duda debe generar excelentes resultados para reducir temperaturas en el interior de cualquier construcción.

FANTASTIC UNIT - Will buy again for another house. Easy install, functions well, low noise.

This product works. It does lower the temperature in the attic by exhausting the hot and humid attic air out. The difference in over all house temperature during hot summer is noticable. Update 3.2.24: One of the fan stopped working on a clear hawaiian sun. I spun it manually thinking that it may help start spinning again with no joy. There is one good thing that i discovered though, the fan blade and the motor unit can be removed while the entire unit is still mounted on the roof. So i proceeded on removing the motor and took to my workshop and i was very diasappointed to have found that the motor is NOT, again is NOT a brushless motor as stated in its product features. It is a conventional brush type motor. In fact, the very reason it stopped working is the commutator has turned black-an indicative of bad contact with the brushes which were wearing out quickly evidently with heavy brush dust all over it. I am able to clean it, and got it to work again. From the look of the brush wear, they look like they are only going to last for about only a year or two max. I feel bad for the folks that bought these solar fans that may not have the ability to do what i just did to get it running again. Replacement of the entire unit is not cheap. I blame Amazon for selling a falsely advertised product by not fully vetting it. AMAZON should revised this solar fan's product features. Brush-type motor not brushless as deceptively writen. I would like to have a full refund on this purchase. If amazon wants them back, they can pay the roofers to have them removed. 7.3.25 update: Both fan now are obviously have gotten very slow. July is when the sun is most straight up in the sky here in Hawaii and the panels are receiving the most sunshine. Fan 1 is squealing real loud that no birds want to hang around the roof any more. Fan 2 has tremendously gotten slower now. Please if your in the market for solar attic fan, look somewhere else. Read all the other unpleasant comments if I'm not convincing enough. I can not over empathize the fact that these are NOT brushless motors (huge difference). Look at the pictures that I had posted. Note the black dust from the brushes.

Seller sent out a replacement item the moment it learned that I had received a bad unit. Was a great help. Replacement works great!