The Family Handyman on MSN

How to Change a Dirty Furnace Filter

If you’re thinking you only have to change your furnace filter once a year, you may be shortening the life of your furnace.
Q: Our 1920's era house originally had a steam or hot water heating system. In the 1970’s that was replaced by a forced air furnace, which we upgraded in 2003. We added air conditioning in 2005. The ...
Your furnace is an important part of your HVAC system, keeping your home the perfect temperature. In order to work properly, your furnace needs proper venting, and filters are part of that process.