Quote:
Originally Posted by wlasowicz
When you refer to thin filter I assume your meaning 1" thick and the new one is 4" thick. If this is the case I would not use a 1" thick The system is setup for a 4" filter. If you use a 1" your leaving gaps in the ductwork to pull in outside air which will lead to probably more dust in the air and the system will run less efficient.
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You are correct on the filter.
Here's another concern.
My garage gets hot and humid were my HVAC sits.
Wouldn't that effect filtration with the paper (if any) in the filter compared to have one inside the house
on my return vent?
Just a thought