Since I installed radiant heat barrier foil in my attic my electricity bill has gone down. Compared to the same month last year I have used 14% fewer KWH. In giving the foil credit for the savings I am assuming all other things are equal such as AC, applicances usage etc. I saved $21 dollars the first month I installed the foil. At this rate I will get full ROI in 7 months. Nice.
Saturday, June 7, 2008
I went around the house with a digital thermometer and collected some temp. readings. As you can see from the colorful diagram I made the foil works.
There is an 11 degree temperature diiferential on either side of the foil. I got the foil from Atticfoil.com for around $135/thousand sq ft.
This is about half the price of what Home Depot and Lowes charge for this. By my calculations it will pay for itself by the end of summer.
Posted by Michael Brashier at 2:34 PM