I got my gas bill yesterday and with all the increases Pandora keeps giving us for his new boat, I about flipped.So after all these years in this house I figured it was time to do something about it. I was going to buy granite countertopsbut figured I would save energy instead. It was WAY cheaper than I thought it would be. I bought 45 bags of blow in cellulose which will add R22 to my existing R19 for a total of R41. How much you ask? For enough to do about 1700 sq. ft. $236. plus tax. Pretty f'n cheap I thought. I also thought why didn't I do this years ago? Home Depot gives you the blower machine for FREE if you buy 15 bags or more.