NASHVILLE, Tenn. (WTVF) — Temperatures are plummeting, and keeping warm is top of mind.

Jake Redd with Air Conditioning Service, Inc. in Nashville says there's one routine task that might save you this winter.

"[The] number one thing you can do for your air conditioner is remember to change your filter," he said.

What can also keep you warm and save you money is checking your system's maintenance twice a year.

"You might invest a couple hundred dollars in maintenance every year versus, you know, if your blower motor goes out, depending on what machine you have, that could be $800, $500, $1500," added Redd.

NewsChannel 5 also asked Redd how to set the thermostat to stay warm and within budget.

While advice varies, his personal take is to set it at a comfortable temperature and keep it

See Full Page