Energy Bill HQ is designed to give U.S. homeowners practical comparison estimates, not engineering studies, contractor quotes, or financial advice.
Last reviewed
March 29, 2026
Review dates are shown plainly so it is clear when the estimate framework was last checked.
What the tools calculate
Results are estimates based on the values you enter and the assumptions shown on each calculator page.
The tools use simple formulas for annual savings, cumulative savings, and recovery timelines. They are designed to help homeowners compare scenarios, not to replace detailed project modeling.
What the tools do not model
How inputs are chosen
Source inputs and assumptions are informed by public U.S. references such as federal tax guidance, U.S. energy-efficiency programs, utility information, and publicly available homeowner energy data where appropriate for the tool.
How to use the estimates responsibly
Energy bills, equipment performance, incentives, and installation costs vary by home, climate, utility, and contractor. Treat each output as a planning estimate and confirm meaningful decisions with qualified local professionals and current local pricing.