Why Do HVAC Techs Recommend Fiberglass Filters? Pros, Cons & Better Options
We pulled a one-inch MERV 13 filter out of a Clermont return grille last August and it came out bowed, sucked into a curve by the blower behind it. The homeowner had upgraded on her own. Her tech told her to go back to fiberglass. Both were half right, and neither had measured anything. TL;DR … Read more