1. Adjust the thermostat
If you have central air controlled by a thermostat, use a programmable thermostat to save energy by increasing the heat significantly during the day when the house is empty. You can give up a couple degrees at night, too – especially on the hottest days. You may be surprised to find that the contrast between outdoor and indoor temperatures matters as much as the absolute temperature inside your home. When home, aim to set the temperature at 78 degrees to balance comfort with energy and cost savings. Together with winter energy savings, a programmable thermostat used properly can save the average home up to $150USD.