The higher the merv rating on a filter the fewer dust particles and contaminants can pass through it.
Highest merv rating furnace filter.
Using an air filter with a merv rating higher than what your furnace or air conditioner manufacturer recommends can actually impair its performance.
Merv 17 through merv 20 filters are typically used in surgical operating rooms clean rooms and other contexts that require absolute cleanliness.
If the merv rating on your furnace is too high it may force your furnace to work too hard and leave it vulnerable to damages.
It tells you how effective your air filter is compared with others on the market.
Merv filter ratings and efficiency.
In addition you may not get the air velocity required to reach all parts of your home leaving inconsistencies in temperature.
Not all electrostatic filters are equal.
You ll find merv ratings range from 1 to 16.
Merv ratings above 16 are typically used in specialized commercial settings where air filtration is critical such as hospitals.
On the lower end of the scale larger particles can make their way through the filter.
Closer to the high end of the scale even very small particles are blocked from passing through the filter.
The merv filter rating system goes from 1 20.
This filter does not require electricity.
That is the highest merv rating of any washable filter on the market today.
What merv rating is the best.
For residential furnaces filters range from 4 to 12 on the merv scale.
Merv stands for minimum efficiency reporting value.
The ratings for merv range from 1 20.