A quick way to see if you need more insulation is to look across your attic floor. If your insulation level is at or below the top of the floor joists, you probably need to add more insulation (but remember to seal the air leaks before you insulate). If you can’t see the joists because the insulation is above them, then you should measure the insulation depth with a ruler to see if you have enough. Once you know total depth, you can estimate the R-value if the insulation. For fiberglass and cellulose insulation, you can estimate about R-3 per inch. The goal is R-38 in the Southern US and R-49 in the Northern US. If you are more than R-13 below those numbers, adding more is probably cost effective. Even if you have plenty of insulation, it may not be performing well due to cold air leaking through the insulation into the house. So make sure to look for signs of air leaks and seal them up as you find them. Visit the Seal and Insulate with ENERGY STAR for more information.
The simple choice for energy efficiency.
energy efficient products
ENERGY STAR products are independently certified to save energy without sacrificing features or functionality. Saving energy helps prevent climate change. Look for the ENERGY STAR label to save money on your energy bills and help protect our environment.
Find ENERGY STAR Products Energy Savings at Homes Take the Pledge Learn about Climate Change
ENERGY SAVINGSat home
energy savings at home
Improving your home's energy efficiency with ENERGY STAR can help to lower high energy bills, improve comfort and reduce greenhouse gas emissions. Learn about the many ways to save in your home and track your progress with "My ENERGY STAR" - your new dashboard to savings.
Start Saving Now Take the Pledge Home Assessment Tools Seal and Insulate Your Home Learn about ENERGY STAR Products Learn about Home Performance with ENERGY STAR
ENERGY EFFICIENTnew homes
energy efficient new homes
A new home that has earned the ENERGY STAR label has undergone a process of inspections, testing, and verification to meet strict requirements set by the US EPA. ENERGY STAR certified homes use 15-30% less energy than typical new homes while delivering better comfort, quality, and durability.
Find Builders and Incentives Home Features and Benefits Homeowner Testimonials Resources for Partners
ENERGY STRATEGIES FORbuildings & plants