Smart Thermostat Savings Calculator: How Fast Does It Pay for Itself?

Enter your bill and costs to see how fast a smart thermostat pays for itself, and which one fits.

1Your bill and current thermostat

Average monthly energy bill

Electric plus gas, averaged over a year Current thermostat

2Your costs

Thermostat price

Enter the price you actually see Installation Utility rebate

Find your rebate (often $50–$100)

3What matters to you?

Voice assistant Do you have a C-wire?A wire on the “C” terminal of your current thermostat

Keep it cheapbasic features are fine Some rooms run hot or coldroom sensors help Set it and forget itbuilds its own schedule

Estimates based on typical US usage and rates; your bill may differ. How we work out these numbers.
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How we work out these numbers

What decides the payback

A smart thermostat is usually the cheapest energy upgrade with a real payback, but “real” depends on your bill, your current thermostat and whether your utility offers a rebate.

How the estimate works

Enter your numbers above for a conservative estimate of what you would save and how long it takes to pay back. Then answer a few questions to see which thermostat I would point you to.

Assumptions

Assumes heating and cooling make up about 45% of a typical home energy bill. Savings rates are conservative: ENERGY STAR puts certified smart thermostats at about 8% of heating and cooling costs, and your results depend on climate and habits.

Smart Thermostat Savings Calculator: How Fast Does It Pay for Itself?

How we work out these numbers

What decides the payback

How the estimate works

Assumptions

Don’t overpay for home energy tech.