Run the dishwasher only when full.
Wash full loads of laundry using cold water. Today’s modern detergents work great in cold water and about 90 percent of the energy used by clothes washers goes to water heating.
When possible, delay tasks that produce heat such as dishwashing, laundering and cooking until cooler times of the day or night.
Set your air conditioning thermostat to 75-78ºF (health permitting) when you’re at home and to 85ºF when you’re away.
Use a ceiling fan while you’re home and running the air conditioner. This will allow you to raise your thermostat setting about four degrees Fahrenheit.
Check the filter on your heating, ventilation and air conditioning system. A dirty filter can cause your system to work harder to keep you cool, wasting energy.
If possible, enjoy an afternoon out—at the pool, movies, park or local library.
Use exterior shading devices or plants to shade your home and windows from the sun.
Fill up the fridge. Having lots of food in your fridge keeps it from warming up too fast when the door is open. Then it doesn’t have to work as hard to stay cool.
Turn off lights when not needed.
Make sure that connections at vents and registers are well-sealed where they meet floors, walls and ceilings. These are common locations to find leaks and disconnected ductwork.
Use the bathroom fan to remove the heat and humidity from your home after showering or bathing. Make sure bathroom and kitchen fans are vented to the outside and not just to the attic.
Unplug electronic devices and chargers when they aren’t in use. Most new electronics use electricity even when switched off.
Turn computers and printers off at the power strip.
Give your refrigerator breathing room. Also, clean the coils and don’t set the temperature too low. The refrigerator should be kept between 38-42 ºF, and the freezer between 0-5 ºF.
Clean the lint from the clothes dryer after every load. Run full loads and use the moisture-sensing setting.