Q: I turned on my furnace for the first time this year, and it made the whole house smell musty. I checked the filter and found it caked with dust, so I replaced it with a new filter, and the indoor ...

If you’re thinking you only have to change your furnace filter once a year, you may be shortening the life of your furnace. Many costly furnace repairs can be avoided with regular filter changing. If ...

A man kneels while pulling a dirty filter out of a furnace - Backyardproduction/Getty Images Changing your furnace filter is one of those home maintenance chores that's easy to forget until you've got ...