Quote:
Originally Posted by charlie fairmont
It's keeping debris from get sucked further through the HVAC system. If you simply removed it, you'd have all manner of detritus deep in the bowels of the HVAC system. Some of that would collect and become wet, moldy and disgusting, and some would pass on and blow through the vents right into your face, shoes, etc.
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Quote:
Originally Posted by cobramite
Gotcha, that answers this question and makes good sense. Thanks!
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Definitely yes. If you ever look at the cabin filter coming off a car in say even 1 years, you will see how filthy they are compare to the new one. Another way to realize this is your home HVAC filter. They are already in your house, so should be clean. But 6 month old filter vs new, huge difference.