MERV 8 vs 11 vs 13: What Your System Can Actually Handle
Dana Sorensen · July 6, 2026
Scroll through enough HVAC forums and you’ll find two camps giving opposite advice. One says grab the densest, highest-MERV filter on the shelf because more filtration always wins. The other insists anything past MERV 8 will choke your furnace and should be avoided entirely. Neither absolute is correct, but if I had to pick which … Read more
