ST. LOUIS (KSDK) – When the coldest air arrives, furnaces will be working overtime, and dealing with some extra strain.
Robert Hoffmann of Hoffmann Brothers Heating and Air Conditioning says his company might get 100 calls a day due to this arctic blast, compared to about 30 or 40 on normal days. And with nighttime temps dropping into the single digits, this is definitely not the time you want your furnace to fail, and in many cases that can be prevented with simple maintenance.
"Checking the filter will at least ensure that your unit is going to keep you warm." Hoffmann said. "That's the number one reason why furnaces fail, is a dirty filter."
Even with that, Hoffmann cautions that if you haven't done so already, you still need to have a maintenance check done to your furnace by a professional.