Finding the best hvac air filters for home for most homeowners a more expensive merv 7 or 8 pleated filter provides a good balance between cost and filtration efficiency.
Best high efficiency air filter.
These filters trap 80 to 95 percent of the particles 5 microns and larger more than enough filtration for most households.
High efficiency air filters are a cost effective way to help improve indoor air quality which may be beneficial to family members sensitive to allergens and other particles in the air.
If you choose a purifier with a hepa filter or high efficiency particulate air filter it should remove about 99 96 percent of all airborne particles but there are other kinds of air purifiers.
Furnace efficiency is one thing.
The best air purifiers for such a task he says are high efficiency particulate air hepa filters which can pluck out particles that are as small as five micrometers or one millionth of a meter.