Product Review: Filtrete 16x25x1 Air Filter, MPR 300, MERV 5 Basic Dust 3-Month Pleated 1-Inch Air Filters

 

I had an older furnace (about 20 years old, give or take) that could not handle one of the heavy-duty filters. These are perfect as basic filters that I can replace every 1-3 months and are not prohibitively expensive. Even though I now have a newer furnace, these do keep it from getting too dusty and dirty (that and regular yearly maintenance), which is really the point of the air filters.