Rated 3 out of 5Â by 7
Rated 5 out of 5Â by Clapper Great product! Good Value!
I purchase 2 of these units when I put a new roof on the house. We noticed an improvement the upstairs temperature almost immediately after installing. I expect to see a return on my investment in reduced AC costs. I highly recommend.
August 6, 2013
Rated 5 out of 5Â by aang Solar Fan
Depending on the size and volume of the attic, you may need more than one fan. My home is 2400 square feet with corresponding attic size and therefore required 2 such fans. Even at $400 for the both, I believe it was well worth the investment. The fan is quiet, unlike the powered fans, and requires NO electricity. I figure a 2 year payoff at my current utility rates for a home I will live in for the rest of my life makes it a comfortable solution.
August 2, 2009
Rated 1 out of 5Â by cblack Solar power fan
This fan may work for a very small attic. but don't get your hopes up. I put it up and in the direct sunlight the fan was spinning fast but it did not move very much hot air out of the attic. My attic tempreture only dropped about 10 degrees durring the hottest part of the day. I took it back and bought one of the less expensive powered attic vent fan and it dropped my attic tempreture around 30 to 40 degrees. My attic was getting around 170 to 185 degrees and now it stays around 120 to 130.
I would reccomend one of the power ones way before I reccomend the solar fan.
June 10, 2009
Rated 5 out of 5Â by Cookie Solar Powered Roof Vent
Purchased two unit to replace turbine vents..Attic temp down from 170 to 130 at peak..my AC now cycles on and off and the whole house stays a lot cooler..easy to install no wires to run ..best deal around..
July 6, 2014
Rated 3 out of 5Â by DudeRancher Going Green With Solar May Not Be The Best Solution...
Like many of you reading this, we too thought going solar would be the way to go when adding roof ventilation to our home. While the cost of going solar was nearly 2.5x more expensive than a traditional AC powered system, you do save the on the installation costs. There is no additional wiring required so by the time you pay someone to wire up an AC unit, the total costs are pretty much a wash.
The number of watts used only indicates how much power the unit requires to run, not efficiency of the system. Cubic Feet per Minute (CFM) is the one you want to be concerned with as this number indicates the volume of air the fan with move in One Hour from under your roof or attic area in other words. I found that Solar systems typically are half of what AC units are. So you may need two.
Most all of the solar units we saw did not include a thermostat. Why? Then it dawned on me, itâs because they are always running, at least when the sun is bright enough to power them. Since its free energy, who cares right? But here in lies the big problem... What happens on those hot summer nights, especially when the night is still? What happens to all that hot air trapped in your attic? Where is my little solar friend now?!?!... Nowhere, he is sleeping while my attic is being deprived of the night cool air. My guess is that I would be running the AC unit if I had one. At least with an AC unit, I could turn it on and still have roof ventilation to help cool off the house at night. No such luck with solar.
Another added bonus of using an AC unit was that I could replace the attic access panel with a louvered unit that I could open and close so that the roof fan could help the draw of cool air into the house at night.
In closing, I'm not saying going solar is a bad choice, just maybe not the correct one for your application. We chose hard wiring in an AC unit and just wanted to share our thoughts.
July 28, 2013