I just started to use the NA MERV8's as well. Not really notice any difference between these, 3M, Garrison, or Duststop.htauthority wrote: ↑Apr 16th, 2019 11:24 amThose with older furnaces, it is recommended to use a MERV 8 as maximum. Too hard on the furnace otherwise. Keep this in mind when buying filters.
Would love no dust in the house with the higher rated ones but not at the expense of the furnace.
If anyone sees a better price kindly let us know, they are cheaper than the furnace.ca ones it appears and well reviewed. There are the Aerostar ones as well.
https://www.amazon.ca/Nordic-16x25x1M8- ... way&sr=8-5
I might try out the "seasonal" pack.