A furnace generates heat. That’s the basic job from when the first central heating furnaces were created hundreds of years ago. So when you turn on your furnace to provide your house with heat during a cold winter and the only air that comes out is cold—yes, you have a problem. There may be a simple solution to this, and we’ll look into that. Or you could have a serious problem that will require furnace repair in Andover, MA from professionals.
We’re going to go through some of the basic reasons for a furnace that isn’t heating and what you can do about them. Please, if in doubt, do not attempt to make any repairs on your own. Especially with a gas furnace, trying to open up the unit and “fixing” it is potentially dangerous. (And you probably wouldn’t be able to fix the problem anyway.)