1. Small automotive fan that you would normally find mounted to the dash of a car or truck. Walmart in Lubbock Tx sells them for $11 a piece. They are 10 Watt fans.
2. 10 Watt solar panel, or panel with appropriate output for multiple fans if you so choose. Fans MUST run on DC electricity. You can't use a fan that you would plug into the wall. I have three fans hooked up to a home made solar panel that produces around 50-60 Watts.
3. Plumbers tape and screws for securing your fans to the rafters.
4. Wire Strippers, Crimpers, and side cutters AKA Dykes.
5. Various wire connectors like...butt connecters
Step 1: Parts Prep
Step 2: Attach Fan to Roof
Mount your fan over any existing attic vent hole using the plumbers tape as you see here. You can be creative and make your own fixtures if you want. I would recommend some kind of insulation around the metal bands like insulation board or dynamatt. The metal bands will humm from the fan.
Connect the wires from the fan to your solar panel and you are done. It will run during the day and turn off when there is a lack of daylight.
You may want to add a switch to the circuit so that you can turn the fans on and off manually. You may also want to look into a thermostat that will turn the fans on at a certain temp.
Step 3: Comments