Air filters

[rivethog]

I know this has probably been covered numerous times, but, does a pleated air filter like a 3-M Filtrete have a higher restriction than a regular fiberglass filter? If it does, will this affect the A/C's performance due to reduced airflow? Does the MERV rating have any correlation to restriction?

[dash]

Yes

Yes,but it depends on the duct systems ESP,before adding the 3M.Note ,most can't handle it.

Yes,sort of,generally a 1" merv12,would be more restrictive then a 4" merv12,of the same size,like 20X20.

[stafford]

+1

3M kills heatpumps for me in the winter so I can sell new ones in the spring.

[black #1]

Sometimes you can get away with speeding up a fan motor to compensate for the difference in static pressure, but this isn't always an option. Interesting that this design consideration is never mentioned on the pre-shrunk, sterilized filter package.

[duxinaroe]

I have actually measured the most expensive purple filtrete
20x30x1 filter to restrict 100 cfms. The size of a small bedroom. you can also overheat a furnace with these if your return is too small. By I'm sure it works great in the 3m lab.

Dux

[4l530]

3M is a registered patented copyrighted trademark of 3M
Talkin smack about their filters, they might come in here all commando style http://www.free-smiley.info/combat/combat.gif
They'll hogtie us with scotch tape
lol

[Edited by 4l530 on 10-10-2006 at 08:13 PM]

[duxinaroe]

We don't need kevlar we'll just hold up some of their filters. lol