Which MERV rating will you select to best filter out wildfire smoke?

Higher efficiency filters (MERV 9–12) will work even better, and a true high efficiency filter (MERV 13–16) can remove as much as 95% of the particles that pass through it.

Does MERV 8 filter wildfire smoke?

While MERV 8 filters are probably ok most of the year, they aren’t rated for removing the fine particulate in wildfire smoke. Last wildfire season, buildings recirculating air through a MERV 8 filter were in better shape than those with less filtration, but they struggled during Missoula’s worst smoke days.

What kind of air filter do I need for wildfire smoke?

Choosing an Air Purifier for Wildfire Smoke

The most effective against smoke have a HEPA filter, which uses a fan to force air through a fine mesh to trap particles. The very best air purifiers fitted with HEPA filters can reduce particle concentrations by as much as 85 percent, according to the EPA.

Does MERV 12 filter smoke?

Controls all of the contaminants listed for MERV 1-12 above, in addition to bacteria, tobacco smoke, automobile fumes, sneeze particles, insecticide dust, copier ink fumes, pet dander, and cosmetic dust.

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Does MERV 13 filter smoke?

The minimum MERV rating for removing fine particulate in smoke is MERV 13. You don’t reach HEPA levels of particulate removal until MERV 17. However, a MERV 13 filter is effective at removing the fine particulate in smoke when air recirculates through the filter.

Does MERV 11 filter wildfire smoke?

A MERV 11 filter strikes the right balance between cost and performance. Cost can rise quickly for higher filtration filters. Wildfire season demands a filter with more filtration. MERV 13 to 16 filters will reduce indoor particulates as much as 95%.

Will MERV 11 filter out smoke?

Because particles of smoke are quite small (typically 0.3 to 1.0 microns in size), an air filter with a MERV rating of 11 or higher is required to efficiently remove them.

What MERV rating should I use?

As a general rule, residences do not use higher than MERV 8 filters. We do recommend that everyone uses filters that have at least an 8 MERV rating. These filters will remove the majority of pollutants from your indoor air. … MERV 13 to 16 ratings are usually reserved for filters for labs, hospitals, and operating rooms.

What are the MERV ratings on filters?

An air filter’s minimum efficiency reporting value (MERV) rating measures how effectively the filter stops dust and other contaminants from passing through the filter and into the air stream. Filters with higher MERV ratings trap small particles more effectively than filters with lower MERV ratings.

How many microns is wildfire smoke?

We have an extensive guide to air purifiers, but the basic facts are these: According to the EPA (PDF), wildfire smoke predominantly consists of fine particles in the 0.4 to 0.7 micron range. And true-HEPA air filters are exceptionally good at removing particles of that size from the air.

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Do air conditioners filter wildfire smoke?

Use an Air Conditioner to Circulate the Air

All air conditioners use a filter to trap dust and other particles from getting into the system and damaging it. Therefore, if you run this system when wildfire smoke is present outdoors, it can eliminate some of the particles that may have traveled inside your home.

Is MERV 16 too restrictive?

Filters within a MERV rating of 17-20 are almost never necessary in a residential home. A MERV rating of 13-16 is considered hospital level air quality, so it is unlikely your home needs any more than that.

Does MERV 13 restrict air flow?

MERV 13 air filters are the highest-rated air filters for home use. Any air filter with a rating higher than 13 will restrict air flow to the point of which could cause damage to your HVAC system, resulting in an added expense to fix it.