Turn on the heater or turn off the A/C? As summer becomes fall, temperatures fluctuate from hot to cold. Use these tips to keep heating and cooling costs in check!

Whether you choose to describe it as being “up and down” or as “running hot and cold,” as a homeowner, you know that autumn weather can be unpredictable. Autumn temperatures that veer between extremes can make keeping your home comfortable a real challenge. As the season’s warm days turn into cool nights, how do you avoid running back and forth to adjust your thermostat — or even switching back and forth between your air conditioning and heating systems? Here are some tips to help when switching from cooling to heating as the seasons change.

• Change your filters regularly. 

  Your air conditioning system has gotten you through the worst of the summer, but September and early October can still be torrid. Don’t tax it any more than you have to. To keep your HVAC system running efficiently, change its filters regularly. Consider these general guidelines for filter changes.

  • If your home is occupied by multiple people and pets, change your filters every 30 to 45 days.
  • If your home is occupied by multiple people and only one pet, change your filters every 60 days.
  • If your home is occupied by multiple people but no pets, change your filters every 90 days.

• Get an automatic or programmable thermostat. 

  If you don’t already own a programmable thermostat, hire a professional to install one. Set the baseline temperature within your home to ensure your preferred level of comfort, then back off that temperature setting by a few degrees, especially for those hours of the day when you aren’t actually at home. According to the United States Department of Energy, you can save as much as 10 percent a year in energy usage (and on your utility bills) by making smart adjustments to your thermostat.

• Pile on the cozy bedding.

  This may seem low-tech, but that’s just another way of saying it’s a tried-and-true solution. If your house feels a little too cool at night, snuggle up under an extra blanket or two until it’s time to turn on the heater full-time.

• Have your heating system serviced.

  Before completely switching from cooling to heating, have a professional HVAC technician make sure your heating system is operating properly before the full blast of winter arrives. During this inspection, have the technician check for any signs of carbon monoxide leakage. Carbon monoxide is a colorless and odorless gas that is potentially deadly. According to the Centers for Disease Control (CDC), every year nearly 400 Americans die from carbon monoxide poisoning, and more than 4,000 Americans are hospitalized due to carbon monoxide exposure.

• Make sure your home is sealed.

  Check around your windows and doors for drafts. If you feel air moving or a disparity in temperature in these areas, use caulk or weather stripping to block the exchange of air between the interior and exterior of your home. Improperly sealed homes can easily cause your energy bill to increase by as much as 10 to 15 percent.

• Lower the temperature on your water heater

  You can save between 3 and 5 percent in energy costs for every 10 degrees you lower the high-temperature setting on your water heater. Keep your hot water simmering at about 120 degrees and insulate your water heater and its exposed pipes to reduce heat loss.

• Change out your light bulbs.

  As the days grow shorter and nights longer, replace standard incandescent bulbs with compact fluorescent (CFL) or LED bulbs that use less energy and have a longer lifespan. Non-incandescent bulbs also give off less heat, meaning cooler temperatures inside a well-lit home during those days when winter still seems a long way off.