Last updated september 1 2020.
Furnace filter ratings consumer reports.
It is imported from outside countries and its rated number one filter by customer reports.
We test airflow resistance which measures how freely air flows through the filter.
10 best furnace filter reviews by consumer guide 2020.
However this rating is only used for 3m and filtrete brand filters both manufactured by 3m.
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.
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.
The filtrete ultra allergen reduction 1500 mpr filter earns a very good rating for removing smoke dust and pollen from the air with the system running on a high fan speed but is only.
But to trap particles as small as 1 micron you would want a furnace filter with an mpr rating of 2800.
Consumer reports tests air filters for homes with forced air heating and cooling systems.