I normally use the 3M red labeled air filters in my HVAC system, changing them every month or two depending on run time. Not the best filtration, but it seems to be better than a el-cheapo fiberglass filter as long as I remember to keep an eye on it.
A few weeks ago I was at the big box store and saw XXXXXXXXXXXXXXXXX XXXX XXXXXX air filters. Hmmmm, 3 of these for about the price of one 3M. Being the cheap so and so that I am, I bought the three pack. Last week it was time to install a new filter so I opened the three pack.
I noticed right away that the filter frame was about 25% less thick as the 3M and left a considerable gap in the filter rack to pull basement air into the air handler. I made sure that the filter was seated against the AHU cabinet to minimize unfiltered air from entering.
Fast forward to tonight, one week later. I heard the AHU kick on as normal and then heard the air flow decrease. When I checked the filter I found that it had sucked into the blower compartment.
If anyone is interested in the remaining two BRAND NEW filters, you will find them on top of my trash can on Friday.
Live and learn.......
[Edited by dbx on 06-27-2005 at 10:16 AM]