A lot of focus is put on noticing and diagnosing the sounds that your furnace shouldn’t be making. However, that’s much easier to do if you know exactly which sounds it should be making. Only by familiarizing yourself with the normal noises that mean your furnace is operating properly can you be aware of the sounds that are different and indicate that there’s a problem.
So what noises should your furnace be making? Here’s a handy list of the basic sounds that signal that all is well with your heating system.