Merv Furnace Filters

Merv filter ratings and efficiency.

Merv furnace filters.

At 3m we believe merv only tells part of the story. In general filters with higher merv ratings are more effective and improve air quality but are also more expensive. Mpr microparticle rating is a rating system that includes microscopic particles not visible to the naked eye. Merv 17 through merv 20 filters are typically used in surgical operating rooms clean rooms and other contexts that require absolute cleanliness.

What merv should i use in my home furnace. Filters with higher merv ratings need to be changed more frequently at least every three months to avoid restricted airflow that can cause your system to work inefficiently. Merv 5 to 7. When selecting the right filter for your application higher is not always better.

Using an air filter with a merv rating higher than what your furnace or air. 4 3 out of 5 stars based on 12 reviews 12 ratings. When you want the best possible air filter for your home microparticles matter most they make up 99 of the particles that are in the air. Owen said filters in this range like this merv 7 nordic pure were created as an improvement on the basic merv 1 to 4 filters and designed to also filter out midsize particles 3.

Merv ratings above 16 are typically used in specialized commercial settings where air filtration is critical such as hospitals.