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 ...

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Changing a furnace filter regularly will improve your heating in the winter and your air conditioning in the summer.

On average, Americans spend 90% of their time indoors, breathing indoor air. But did you know that indoor air can be two to five times more polluted than the air outside? The good news is that there ...

Running your furnace, central air, or heat pump probably constitutes a big part of your utility bill. But it’s a small, often inexpensive part—the air filter—that keeps these heating and cooling ...

Even in the warmer months of the year, you should regularly monitor your furnace filter's condition -- and replace it as needed -- to keep your family safe and your furnace in good working condition.