This depends on a couple of things: your home’s current temperature and your thermostat settings. A general rule of thumb is to have the air coming out of your vents be about 20 degrees colder than the ambient temperature. So, if your house is 85 degrees, the air coming out of the vents should be about 65 degrees.
To keep your home at the most energy-efficient temperature during the summer, we recommend keeping your thermostat close to the outdoor temperature. Lowering the difference between the indoor and outdoor temperatures will help you save more. For the greatest energy savings, you can install a smart thermostat. These thermostats take the guesswork out of energy-efficient temperatures by creating a schedule based on your preferences.