Set your thermostat at 78 degrees and even higher at bedtime or if you’re leaving the house for more than four hours.
With higher temperature settings, use ceiling fans or portable fans to move air to make the room feel cooler.
Convert incandescent light bulbs to compact fluorescent light bulbs.
Seal air leaks around doors and windows with caulk and weather-stripping.
Depending on the type of filter, inspect, replace or clean the central air conditioning and heating system filters every month.
Install low flow shower heads and faucet aerators to reduce hot water use.