Quote:
Originally Posted by Toymeister
Let's discuss facts rather than make generalized statements. My facts are based upon a electricity monitor which checks power consumption 10,000 a second. I know how much a fan costs to operate, time of day, hours and minutes a day, month and year
Powered fans come in three flavors, solar, big box store power fans and efficient fans, usually found on line.
I can state unequivocally that solar fans do not operate well into the evening that a thermostat controlled fans do. In other words it quits before the job is done. Readers may love, love their solar fans but that is the cold hard truth. Not enough? Our home inspection guru who posts here is in hundreds of attics here has posted that they make no difference in perceived temp.
That leaves powered fans. But wait exactly how long do fans run in a year? 213 hours.
A big how store fan uses 380 watts or 80.94 kwh a year. At SECO rates that is 9.46 a year.
An energy efficient fan consumes 22 to 120 watts (multiple speeds) or up to 2.99 a year. Quiet cool fans on amazon.
So, cost of operation is simply NOT a factor. You have been given bad advice based upon folklore. I would retain the power vent.
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If your house is properly insulated, the venting that is there is sufficient. People try to sale items you don't need. Sorta like those houses with lighting rods. Cooling the attic by 10 deg will make no difference to your electric bill.