That’s one reason why you need furnace filters, and there’s another. Filters purify the air coming from the furnace so you don’t have to inhale microscopic dust particles and other contaminants.

BUT WHATEVER YOU DO, DON’T TRY TO USE AN OPEN FLAME. FURNACES WILL ALSO BE RUNNING NONSTOP. MAKE SURE YOUR FILTERS ARE CLEAR. IF YOU USE ONE INCH FILTERS, CHANGE THEM EVERY MONTH OR EVERY OTHER ...

HERE’S SOME ADVICE. THEY’RE PASSING ALONG TO MAKE SURE FURNACES ARE UP TO THE TASK. JUST MAKE SURE YOUR FILTERS ARE CLEAR. IF YOU USE ONE INCH FILTERS, CHANGE THEM EVERY MONTH OR EVERY OTHER ...