Originally Posted by inspectorD
Welcome aboard....the advice you got was worth as much as the cheap filters.
The added filtration does nothing to the blower motor on a unit. Ductwork which gets installed like an octopus on drugs does more damage.
Always go with the pleated filters for better air filtration, keep your ductwork clean and sealed, and get a new company to inspect it.
You guys are not reading the post close, so you are talking about two different
things. The first post is talking about a 4" thick filter, and yes it could restrict the air flow enough to effect the ac.
I think the later post is talking about a pleated filter versus a flat cheap filter.
The pleated filter will give you twice as much filter surface as a flat 1" filter.
Twice as mush filter surface will move air through half as fast and do a much better job. If you are going to use cheep 1" filters make sure you are not moving more than 300 CFM of air through 1 SQ foot of filter. Also air filters are suppose to have a oil coating on them and they are sometimes dry when you buy them. Find a place to buy a product called filter coat. It is a oil spray made for air filters. Coat you filters good before you install them. Paul