And 78 degrees during the day when at home. Clearly they're smoking crack. I hate people who like it hot inside. • 78 degrees when you’re home • 85 degrees when you’re at work or away • 82 degrees when you’re sleeping (!) That's fucking insane. I set my t-stat to: - 73-74 during the day - 68 at night - 82 when away for a long period When I'm at a hotel, the t-stat goes to 65 and stays there. http://www.consumerreports.org/air-conditioners/best-setting-for-central-air-conditioning/ More people fight over the thermostat than the remote and those battles become more pitched during periods of extreme heat. The disputes aren’t just about comfort, they’re about money too because every time you lower the thermostat in hot weather it raises your electric bill. So what’s the best setting for your central air conditioner? Well, that depends on whether you care more about keeping cool or keeping your utility bill in check. Fortunately, there’s a happy medium. Energy Star says, for optimal cooling and energy-efficiency, the coolest you should keep your house is 78 degrees and that’s only when you’re at home and awake. A programmable thermostat makes it easy to match your cooling needs to your schedule but you can make the adjustments manually if you don’t have one. Try the following setpoints: • 78 degrees when you’re home • 85 degrees when you’re at work or away • 82 degrees when you’re sleeping More heat tolerant folks can experiment with the temperature, raising it one degree at a time to see how it affects your comfort and your budget. You’ll save 3 percent on your air conditioning costs for every degree you raise the temperature. If you aren’t comfortable at 78 degrees, lower the temperature a degree at a time. A ceiling or box fan causes a wind chill effect that enhances cooling, helping you feel comfortable at a higher temperature as long as the humidity isn’t too high.