Because of allergies, I want an excellant filter and have been using the 3M Filtrete 1250 filter. 3M rates their filters with Micoparticle Performance Rating (MPR); hence the 1250 that they say is 90% efficient. I want the usual filtering of particles, dander, etc, to include mold spores. I think spores are larger than 10 microns.
There are other filters on the market with a MERV rating. So how do I decide which is better according to ratings, and are there better filters than the Filtrete 1250 at $16 each? Oh they also have a 1750 model (93% efficiency) for $19 but I'm not sure 3% is woth $3. I have two filters and try to replace @ 60 to 90 days. Ouch!
There are other filters on the market with a MERV rating. So how do I decide which is better according to ratings, and are there better filters than the Filtrete 1250 at $16 each? Oh they also have a 1750 model (93% efficiency) for $19 but I'm not sure 3% is woth $3. I have two filters and try to replace @ 60 to 90 days. Ouch!