Energy Savings Calculator

Use this energy savings calculator to measure the financial impact of increasing your insulation performance. Enter your data into the fields where indicated: square feet of house (or area to be insulated), current and desired R-value for insulation, and type and cost of your energy.

Results show potential savings and also how your insulation decisions could impact your CO2 emissions.

Enter Values Below
Area to Be Upgraded Square Feet Enter the surface area of the space where insulation is to be upgraded.
ZIP / Postal Code ZIP
Heating Degree Days HDD (Fahrenheit) Find Heating Degree Days by U.S. regions
Current Attic or Wall R-Value U.S. R-Value Find help determining current Insulation R-values.
New Total Attic or Wall R-Value U.S. R-Value Find recommended R-values by U.S. regions.
Pick your fuel type below. Then, enter the correct fuel cost for your area and furnace efficiency for your particular home.

(Note fuel costs vary greatly. Contact your local fuel provider for current prices and change the default amount for the most accurate estimation of potential savings.)
Natural Gas
Fuel Oil
Propane
Electricity
 %
Click Calculate button to update fuel saving
$ Saving per Year Dollars The dollar saving in fuel cost for the first year.
$ Saving for 10 Years Dollars The dollar saving in fuel costs for the first 10 years, assuming a 10% increase in fuel cost each year.
Greenhouse Gas Reduction Pounds per Year If electricity is the fuel, it is assumed it is generated in a coal-fired power plant.

This calculator is designed to provide approximate estimated potential savings. Actual savings can vary greatly depending on many factors including variations in fuel prices, accuracy of information used in calculations and other variables. A professional energy audit is the most accurate way to estimate potential savings for energy-efficient home improvements. Find a certified RESNET home energy auditor.