Add your cooling equipment to the spring-cleaning checklist. An annual tune-up by a heating, ventilation and air conditioning (HVAC) professional should include refrigerant charge, airflow adjustment and condenser and evaporator fan coil cleaning. This helps maximize your system’s efficiency and the lifespan of your equipment, reducing wasted energy and costs.

Some HVAC companies offer discounts for cleaning equipment during the months when they are less busy. Once high temperatures hit, they are more likely to be swamped with calls to repair or replace broken equipment. Signing up for an annual maintenance plan may provide additional savings.

A dirty furnace filter can waste energy by causing your system to work harder. Make sure you have a stack of replacement filters ready to go so you are more likely to replace them as needed. Filters tend to be less expensive if you buy them in bulk. When I recently shopped for filters for my home, the per-filter price was about half as much for a 12-pack as it was for a two-pack.

If your ceiling fan has a reverse function, make sure you flip the switch so it rotates counterclockwise, directing air down into the living space. 

Ductless heat pumps, also known as mini-splits, have a filter in the indoor unit, or head, which should be cleaned. If you clean the indoor filter yourself, be sure to turn the unit off before removing the filter and let it dry completely before putting it back.

As we transition from cool to warm weather, keep an eye on your thermostat settings. You can save as much as 10% a year on heating and cooling by adjusting your thermostat 7 to 10 degrees from its normal setting for eight hours a day. (For HVAC systems equipped with a heat pump and electric resistance furnace, it’s best to maintain a constant thermostat temperature when winter rolls around to avoid engaging costly emergency heat strips.)

One way to feel cooler is using fans in the room you’re in during the day or when you’re sleeping. Using a fan can make a warm room feel cooler without having to adjust the thermostat. Remember: fans cool people, not rooms. Turn fans off in unoccupied rooms.

If your ceiling fan has a reverse function, make sure you flip the switch so it rotates counterclockwise, directing air down into the living space. The reverse function is great at circulating warm air in the winter, and you can maximize the comfort benefit of a fan by switching the flow of air seasonally.

Another consideration before summer hits is your home’s impact on peak load — when demand for electricity is highest. This typically occurs in the morning when people are getting ready for work and school, and in the evening when they return home. Your electric cooperative must manage the energy use of all its consumers, which can be a challenge. Consider starting the dishwasher before you go to sleep or starting a load of laundry outside of your utility’s peak times.

If you have a photovoltaic solar system, run your dishwasher or do laundry when your system produces the most electricity, which is typically during the sunny mid-day.

Cooking outdoors in summer is a great way to save energy. Using the stove or oven heats your kitchen, which requires more energy for cooling. Get the grill cleaned now so that you are ready to enjoy outdoor cooking.

Incorporate these tips into your summer prep to save energy and lower your bills.