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Q. Some time ago, you discussed the difference between static filters and paper filters for efficient furnaces. I purchased my furnace about three years ago and have the static filters. I find them ...

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 ...

TORONTO – If you’re like most people, you probably don’t give your furnace much thought as long as it’s keeping you warm in the winter and cool in the summer. But in order to keep it working to its ...