After searching for what seems like days i have an even more re-****-ulous question for everyone. i know how to replace the filter and what slot and blah blah blah. but the question is ......WHAT filter do i need. i dont have the IAQS system because i dont have a atuo/manual option by my recycle button. so i think i need the smaller filter, but what is THAT filter? an inch? and inch and a half? paper? and why and i seeingNON-IAQS filters that are charcoal activated? will that resrict the air flow?

pretty much i just want was is in there now......i suppose i could take it out and look at it, but im at work, so ya know.

thanks guys for the help.

 

There is a way to tell but I forget exactly. I always take it out and look at which one is in there.
Also alot of people upgrade to the bigger one so you never know whats in there till you get in there.
If you have the smaller one yes you can upgrade to the bigger one. You will just have to cut a piece of plastic out of the bigger slot to fit it in there.