Last updated september 1 2020.
Furnace filter ratings consumer reports.
The vast majority of disposable furnace filters are rated according to the merv scale minimum efficiency reporting value created by the american society of heating refrigerating and air conditioning engineers.
However this rating is only used for 3m and filtrete brand filters both manufactured by 3m.
If we were looking to buy a new filter today for our hvac heating ventilation and air conditioning system we d aim for a medium efficiency filter with a merv rating in the 8 to 13 range which.
The lowest 300 mpr is a basic option that works relatively well.
The higher the number the finer the filter so the more particles it traps.
10 best furnace filter reviews by consumer guide 2020.
It comes with a high efficiency media filter that is up to 95 efficiency in removing circulated dust mold spores and other particles from three microns.
Consumer reports tests air filters for homes with forced air heating and cooling systems.
We test airflow resistance which measures how freely air flows through the filter.