Attic ventilation questions
So after getting a $310 bill from the folks at Duke Energy last month, I decided it was time to figure out a more efficient way to cool our home. I've since asked them for their free energy audit to identify areas where I can save energy.
I had to go into the attic recently, and noticed it was ridiculously hot. On hot days, we set our thermostat on 72, and the home is lucky to stay ten degrees above that. Now, I'm not a builder, but I walked around our home, and noticed only one gable vent - which was above the garage. We have a single family home that's about 1600 square feet. No where else on the home did I see any vents.
I read this very informative article:
Fans in the Attic: Do They Help or Do They Hurt?
Of course, this was a few hours after ordering the $75 powered attic fan from lows, and discovering that the author was none to fond of them vs. the whole house vent fans. So I had a few questions:
1) If attic fans don't work, why all the good reviews from people online saying they've lowered their homes temperatures?
2) Our house is shaped like an "L" with the front of the garage being the lower right part of the "L" - which is where the only gable vent is located. If attic fans are helpful, and we did install one, where should we put it? Should we add another gable vent to the top of the "L", and then put it somewhere in the middle, or could we just put the attic fan on the opposite side of the house.
3) The article mentioned backdraft issues with gas fired appliances. The last thing I want to do is poison my kids with CO2. Are there ways to combat this short of installing additional gable vents?
4) We live in Charlotte, NC - so in the summers we get to 90-95 probably 30-60 days out of the year. At night, we are usually around 70-75 during those same days. Based on our location, would this make a whole house fan a better option than the attic fan?
We are trying to keep costs as low as possible, and I'll be doing the install myself. I can do some basic home repair stuff, but have never really many true construction jobs.
Any tips are appreciated :)
Posted Jul 29, 2014 8:07 AM ET
Edited Jul 30, 2014 3:25 AM ET
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