solar power attic fan costco

No attic fans really cool a house?
Im thinking of buying power to the solar attic fan has to save Costco in the CA, but we really need to know if they make a big difference (solar or electric). It costs $ 369, so I need to know whether it is worthwhile investment. Thanks
You will not notice the difference yourself. However, his AC. It will take some tension out of it. When your attic is the heat of the oven temperature is under your roof. If you have ceiling fans you push around the room making ends near the thermostat. The AC effect is working more. If you get the heat of the attic, CA may close more often reducing cooling bills and repair bills from the CA. Place a thermometer in your attic and read it in a hot day. Temperatures are usually around 130 degrees. Now turn on the attic fan and back in an hour. You will notice a change. There may be 80 in the attic now, but will certainly be cooler.
Jan + Richard’s New solar powered attic fan