I have a Heil split system that may need a new 24" x 30" x 1" air filter and I don't know which one to select. For 4 years I used a series of inexpensive fiberglass filters and pitched them monthly. Last summer I purchased an expensive permanent washable A+2000 air filter that was guaranteed for life. I was washed monthly and I thought was working.
Yesterday, my annual maintenence contractor came by to inspect the system. After doing whatever he does, he asked what kind of filter I was using. I told him it was the A+2000 permanent washable. He said to get rid of it as it was doing a poor job of filtering and there was a build up of fine materials on the inside of the ductwork. He said this could shorten the life of my circulation system and could provide fuel for a duct fire. He recommended use of a good quality pleated filter.
What I want to do is THE RIGHT THING. I don't mind spending a bit more money every month on filters. That's a lot less cost than a fire or repair of the ventilation equipment. What is the right thing to do for both good filtration and reasonable control of cost? Thank you.