Rule Your Attic Tool
Does your attic insulation measure up?
Investments in attic insulation will save you money on heating and cooling plus keep you comfortable.
Columbia Water & Light recommends having 18 inches of attic insulation (R-50). We will help finance your project with rebates and loans through our opens in a new windowHome Performance with Energy Star program.
How much will you save?
Use these estimates to find out how much you could save on heating and cooling in a year by improving your attic insulation to 18” (R-50).