How cool should you keep a home? The magic number for your thermostat is 78° F, according to Energy Star. The thermostat setting is ideal for optimal cooling and energy efficiency, the federal program concludes.
Energy Star also offer the following setting suggestions for your thermostat, as reported by Consumer Reports:
• 78° F when you’re at home
• 85° F when you’re away from home
• 82° F when you’re sleeping
“If you aren’t comfortable at 78° F, lower the temperature a degree at a time and let your system reach the new setting before ratcheting it down further,” Consumer Reports suggests.
Homeowners can save about 3% on their utility bills for every degree they raise the set temperature of their central air, according to the Department of Energy.