All: I've learned a lot from you guys a while ago regarding hvac repairs and trouble shooting ideas. So, I've come back to the well for another drink.
I've been using HEPA filters in my furnace since we bought the house in 2000. I've come to learn that HEPA filters, according to some websites, are not appropriate for residential use. So, I'm considering going back to the less expensive filters a la Home Depot and Lowe's, i.e., the $.50 specials. Anyway, I'd like to get your views on furnace filters. None of us have any allergies or apparent breathing problems. The guts of the furnace/ac appear to be cleaner than most, according to the tech who serviced my system earlier this year. I was already advised by an independent contractor not to buy/install an electronic air cleaner. The HEPA filters I was using were $30 a pop, and I was changing them every three months.
Thanks for your input.