Many lists of ways to know that your furnace needs repair focus on noises. It’s true that a lot of the time, a furnace in trouble will make a racket to let you know that something is wrong. However, the fact that your furnace is not making noise is no guarantee that everything is working just fine.
Sometimes, a furnace problem is silent. If you’re waiting for a noise to indicate a problem, you could miss important warning signs. Here are some silent signals that your furnace needs repair.