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What happens when you dont have a filter in the furnace

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Hello. When you do not have a filter in the furnace there is nothing to stop dust and dirt that the fresh air intake sucks into the furnace from being blown through out your house. Definitely put a filter in the furnace to prevent folks from having allergy attacks and other ailments. Joe

4 thumbs up please. ty.

Posted on Nov 08, 2010

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