These extremely cold temperatures have our heaters working overtime.
Gus Guarnere Jr., owner of G&G Mechanical Contractors, says any small problem in your heater can become a major issue in these temperatures.
He says the first thing you should do is make sure your air filter is clean. If there's any freezing in your condensate lines, defrost them carefully. And, he recommends checking your windows and doors for any possible gaps that might be letting the cold air into your house.
(Photo credit: NBC10)