Thermostat Savings Calculator
Estimate annual HVAC savings from adjusting your thermostat by a few degrees using the 1% per degree rule of thumb.
Estimated Annual Savings
$20
Estimated Annual Savings vs Annual Heating/Cooling Cost
Thermostat Savings Rule of Thumb
The Department of Energy estimates you can save about 1% on heating and cooling costs for each degree you adjust your thermostat for 8 hours.
Formula
Savings = Annual Cost x Degrees x (Hours Adjusted / 24) x 1%
This applies to setback (cooler in winter, warmer in summer) during sleep or away periods. A programmable or smart thermostat automates this for consistent savings.
Example Calculation
$2,000 annual HVAC cost, thermostat adjusted 3°F for 8 hours/day.
- 01Savings factor = 3 x (8/24) x 0.01 = 0.01 (1%)
- 02Annual savings = $2,000 x 0.01 = $20
- 03Monthly savings = $20 / 12 = $1.67
Frequently Asked Questions
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