That's a good question! Some electrostatic filters contain 4 or 5 layers of filter media. They do a great job trapping dust, but they also have too much resistance and can definitely harm your unit over time. Air Care make their filters with a good balance between dust arrestance (94.7%) and air resistance (0.12" W.G.). Of course, another key factor is how often the filter is cleaned. We recommend every 30-60 days.
--Scott@NeverBuyAnotherFilter.com
<http://www.neverbuyanotherfilter.com>

If I only have one return air grill in a 2500 sq feet home w/ one pet how often do you recommend me cleaning. And what keeps these filters from growing mold?

are your filters appropriate for a/c with heat pump capabilities? what frame do you recommend for a custom sized 22x22x1?

Do all heaters have a filter and is this a "normal" size? Our home is a 2000 house and never opened up the heat but just curious where it is on it and how to take it out. I am also looking for an A/C one, I see dst arrestance is 94.7 but in laymens terms what is this, how does it compare to the very good ones in the stores.


Thanks.


Thanks.

My furnace calls for a 1" thick filter--I saw that Boair 5 stage electrostatic comes in 2" thickness as well as 1". What is the difference? Any benefits going with a 2" thickness?
--Laurie-Camas,WA
<mailto:biloxisurge@msn.com>

I have a aprilair model2200 air filter ,what do you recomand to use it, and three 11.25x7.25 in cool air grill.