What is a furnace? A Floridian wants to know.....
Good point, air handler filter I guess I should have said.
Air-Handler.
it’s a Furnace. You use a basic filet and replace it monthly. Don’t use some anti-microbial dust free bullschit. Those are bad.
/thread.
We buy 3M for our units and replace them every 4 months. Our AC guy, who I’ve known for several years suggested a better filter, so we’ve followed his advice. Our houses are older and can get a little dusty out here in the country and at the lake.