It might not seem like it now, but colder weather is on its way, even if it takes a while to get to Texas. September is a good time to start planning how you’re going to save energy in your home during the colder months.

During the fall and winter, keeping cold air out is the goal. To maintain a warm indoors, there are simple steps you can take to increase energy efficiency.

There’s no better time to examine seals on doors and windows to check for air leaks. Caulk and weatherstrip as needed to seal in warm air and energy savings. Similarly, examine electrical outlets for air leaks, and where necessary, install foam gaskets behind them to prevent drafts.

During the day, open curtains or drapes on south-facing windows to let sunlight heat your home naturally. Close window treatments at night for an added layer of insulation.

As the temperature drops, schedule a service appointment for your heating system to ensure that it can operate at an optimal level.

Low-cost or no-cost steps for energy savings include taping or affixing heavy, clear plastic to the insides of your windowpanes to create an additional barrier against cold air. Ensure that the plastic is sealed tightly to the pane to help reduce infiltration. Use a programmable thermostat to set the temperature as low as is comfortable when you are home (ideally around 68 degrees). When you are asleep or away, turn the temperature down. A downward adjustment of 10–15 degrees over long stretches of time can save 10% a year on heating and cooling costs, according to the Department of Energy.