"Everything needs to be inspected because these things have electricity, they have gas, and then they have coolant in the system and all those things are potential hazards to health," says Kaminer Heating and Cooling service manager Rusty Kelley.
Kelley says heating units are basically a controlled fire in a box and there are many hazards if it's not maintained. Midlands home owner Nancy Mullen says she does not get her system checked twice a year like everyone should.
"I learned if it's not broken, don't fix it," she says.
Kaminer reports only about three percent of the people in South Carolina actually get their heaters checked on a regular basis. They say things like rust and holes in the heat exchanger cause problems, and can be deadly.
"If they do find a defect in your heat exchange or exhaust pipe that goes with your unit, like a car, these things have exhaust pipes that vent the fumes away from us. If they find anything dangerous listen and address them," Rusty Kelley says.
Kelley says before you turn up the heat, have a certified heating company check your unit so its ready to bare the cold this weekend.