Hi there, I'm looking into installing an attic fan on the roof to vent hot air in the summer times, so to hopefully help reduce somewhat of the AC bill. The residence is a single-story SFH that faces NW(15 deg)/SW. On a typical day (like now), the wind is from NNW @ 10-15mph. There is a huge tall tree about 40 feet away facing the SE-side of the house by the curb. The tree is about 80 ft tall. I am wondering about the following: 1. What kind of attic fan is best - the motor needs to last, and is also quiet (I should not hear anything from inside the house) Are gable fans ok--like this one? http://www.amazon.com/Broan-353-Gab...JC1C/ref=sr_1_1?ie=UTF8&qid=1333847688&sr=8-1 Or roof-mounted attic fan is better: http://www.amazon.com/Broan-355BK-M...ref=sr_1_5?s=hi&ie=UTF8&qid=1333848899&sr=1-5 I'm also looking into solar fan like this: http://www.amazon.com/Solar-Attic-2...ref=sr_1_3?s=hi&ie=UTF8&qid=1333848899&sr=1-3 Some info say that solar attic fan is DC motor so it's a lot quieter and lasts longer then the AC-motors in powered attic fans. True? 2. Best location to install the attic fan For the solar attic fan option, the tall tree doesn't seem to be blocking the sun so perhaps middle of the roof facing SE side is ok to capture the sun fine during day time? Should the attic fan be as close to the top of the roof as possible? Anything to pay attention to when I install (I'm a fresh DIYer)? Sunrise is @ 80 deg (East), and sunset is @ 280 deg (West). Thx.