The homeowner’s workbench

Put your numbers
to work.

Understand the trade-offs before you make the investment. Four practical tools, transparent formulas, and assumptions you control.

AC running cost

Turn electrical draw, runtime, and your electricity rate into hourly, daily, and monthly cooling costs.

Compare the fuel cost of delivering the same amount of heat, and find the break-even heat pump efficiency.

Compare the repair bill with replacement cost and possible operating savings over a period you choose.

Put three proposals side by side. See missing line items, compare totals, and keep warranty terms in view.

Your assumptions stay yours. Tools calculate in your browser. There is no account, submission, or saved personal data.

Every number has a job. Defaults illustrate the math; they are not current utility rates, contractor quotes, or forecasts for your home.

Decisions need context. Pair the results with a complete written quote, local rates, and the advice of a qualified contractor.