As temperatures rise, it can be tempting to blast the A/C and keep your home ice-cold. But cranking the thermostat too low can drive up energy bills fast. So, what’s the best thermostat setting for summer that keeps you comfortable without breaking the bank?
The Sweet Spot: 78°F (25.5°C)
According to the U.S. Department of Energy, 78°F is the most energy-efficient setting when you’re home and need cooling. It strikes a balance between comfort and cost-saving.
When You’re Away or Asleep
- Away during the day? Set the thermostat to 85°F.
- At night? Try increasing the temp by 4–7°F if you’re comfortable.
Using a programmable thermostat or smart thermostat can automate these changes for you—saving energy without you having to think about it.
Every Degree Counts
For every degree you raise your thermostat above 72°F, you can save up to 3% on your cooling costs. Over a summer season, that adds up!
Quick Tips to Stay Cool Without Lowering the Temp
- Use ceiling fans to circulate air (they can make it feel 4°F cooler).
- Close blinds or curtains during the hottest part of the day.
- Avoid heat-producing appliances (like ovens) in the afternoon.
Bonus: Your HVAC Works Less
Keeping your thermostat in the 76–80°F range reduces the strain on your HVAC system—extending its life and lowering repair costs.