Energy Star, the federal program from the DOE and the Environmental Protection Agency, said the coolest you should keep your home is 78 degrees when you’re home.
When you’re at work or away, the program recommends setting it at 85 degrees. When you’re sleeping, Energy Star said to set the thermostat at 82 degrees. (link)
Setting the thermostat at 82° at night is well recognized grounds for divorce. I swear these administrative state progressives are going to have us force-fed sustainable algae cakes if this keeps up.
But seriously… given the track record for current energy efficient standards and how they end up being actually applied to life (toilets, dishwashers, lightbulbs etc.) it’s darned frightening to think the Feds believe 78° (when home), 85° (when away) and 82° (when sleeping) is a reasonable cooling standard.