Thermostat Savings Calculator

See how much you save by adjusting thermostat settings.

68°SETBACK
ANNUAL SAVINGS
per year

Usage Tip

Rule of thumb: about 1% savings per degree F of setback per 8 hours. Programmable thermostats pay back in under a year.

THE MATH
$ = setback × hrs × months × rate ÷ 24
Where: setback = degrees turned back  •  rate in $ per therm
• Reduction % = setback × hrs ÷ 24
• Monthly = annual ÷ 12
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The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.