Wednesday, September 9, 2009
Energy Savings with Polaralum
Just had my first electric bill since the Polaralum heat barrier was installed. I also had a ridge vent installed and I used slightly lighter colored shingles. Electric consumption went down from 1772 KWH in July to 1472 KWH in August (17% less power). It's true there were fewer cooling degree days in the August period (743 vs 774), but even correcting for that power consumption was a lot lower. It's more impressive when one considers the new roof was on for 6 days in the July billing period - without the Polaralum the July electric bill would have been even higher. The heat barrier helps extend the life of my AC units as well - they don't run as much now.