When the mercury drops and stays below zero for days, heating costs will go up if you want to stay warm.
"They're definitely going to go up," said Dustin Hockett of Buffalo. He uses a hot water heat boiler and it went down for a few days last year.
"Maybe five percent in that period of time maybe for that month. Maybe between $50, $60, $80 depending on the type of system a person has," said Total Comfort Heating and Air Conditioning owner Jason Reilly.
Reilly says he's received lots of calls around Sheridan about heating problems lately.
"Either furnaces are nonoperational or have shut down for some reason, ranging from simple filter changes that causes them to overheat to circuit boards, main furnace blowers. Due to the weather and low temperatures and stuff like that, furnaces will tend to run longer, which then you start getting slightly excessive wear on major components like blower motors," said Reilly.
Reilly says the cold itself is not the only factor that can damage heating systems.
"Either wind blowing down the exhaust vents and tubes and also snow building up around the venting systems, shutting the systems down," said Reilly.
It's also a good idea to have a backup plan in case your heat does go out.
"One thing that might be important is having some source of heat that doesn't have to have electricity, like either a gas fireplace or a wood burning fireplace or coal," said Hockett.
Reilly recommends checking your furnace often during the winter and make sure the batteries in the thermostat are working.