My furnace is 10 years old and is cleaned and checked by the same company twice a year. A month ago a fella came out and cleaned it like no one else ever has. He had pieces all over the place! Now, the filters are filthy every two weeks... any idea why? Blackish color.

Answer

Well, if the blower hadn't been taken out and cleaned before then it could be working better thus drawing in more dust.

Updated on January 10, 2018

Original Article:

How to Figure Out What is Wrong With Your Furnace
By Dan Robbins

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