About Housenergy Calculator

Housenergy Calculator is a set of free calculators that help US homeowners estimate what their appliances, heating and cooling cost to run. The site is written and maintained by the Team of Housenergy Calculator.

What you will find

• Calculators that show their formula and worked examples next to the result.
• Data from public sources, such as the U.S. Energy Information Administration, with the source and date shown.
• Plain explanations of what a calculator leaves out, so you know how far to trust the number.

How the calculators are made

Text and code are drafted with the help of AI tools. Every formula and every figure is then checked by a person against its source and tested with known cases before it is published. Read the details on the methodology and sources page.

How the site is funded

The site is free to use. It is meant to be paid for by advertising. Ads, when they appear, are labeled and kept away from the calculator itself. We do not take payment to change a result.

Contact

Questions, corrections or suggestions: see the contact page.