What is the ideal rating for an air filter?

In general, filters with a rating of MERV 16 or below are considered to be HVAC-system-grade filters for residential, commercial and general hospital use. MERV 17 through MERV 20 filters are typically used in surgical operating rooms, clean rooms and other contexts that require absolute cleanliness.

What MERV rating should I use for Covid 19?

What kind of filter should I use in my home HVAC system to help protect my family from COVID-19? Minimum Efficiency Reporting Values, or MERV, reports a filter’s ability to capture particles. Filters with MERV-13 or higher ratings can trap smaller particles, including viruses.

What is the best rating for air filters?

Well, MERV ratings range from 1 to 20, with 1 being the lowest level of filtration, and 20 being the highest. Filters that are MERV 16 through 20 are usually only found in hospitals, cleanrooms, and nuclear power plants. The home air filters you’re looking for are rated anywhere between MERV 5 and 13.

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Is a MERV 13 filter too restrictive?

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.

Is a MERV 12 filter too restrictive?

If your filter is either too dirty or too resistant it can cause airflow problems hurting efficiency and performance. To determine resistance, filters use the MERV rating system.

Learn how to maintain your. home and HVAC this fall.

MERV Minimum Particle Size
9–12 3.0–1.0 μm
13–16 1.0–0.3 μm
17–20 < 0.3 μm

Is MERV 11 bad for HVAC?

A MERV 11 air filter has a higher efficiency rating. … In particular, using an air filter with a MERV rating that’s too high can damage the compressor, heat exchanger, and air conditioner coil. In most cases, a MERV 11 air filter isn’t too high for residential use.

What type of air filter is best for Covid-19?

By itself, air cleaning or filtration is not enough to protect people from COVID-19.

Air cleaners and HVAC filters in Homes

  • it is designated as High-Efficiency Particulate Air (HEPA),
  • it is CADR rated, or.
  • the manufacturer states that the device will remove most particles in the size range below 1 um.

Is MERV 13 too high for residential?

One factor to consider is air flow through the system. … In some cases, using an air filter that is too restrictive for your system may cause low air flow problems as well. MERV 13 is the highest MERV value safe for residential furnaces; the higher ratings are used primarily in commercial units.

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What MERV rating should I use in my house?

Using an air filter with a MERV rating of about 5 to 8 is appropriate for most residential homes. MERV 5 – MERV 8 filters provide good filtration and will remove most pollen, mold spores, and dust mites.

What MERV rating can my HVAC handle?

The EPA recommends MERV ratings of 9-12 because it is the most effective at keeping your home’s air clean. A filter with this rating will prevent particulates as small as 1 micron from entering your HVAC system. This rating qualifies as HEPA (high-efficiency particulate absorption) level.

Is MERV 11 or 13 better?

A MERV 11 rated furnace filter can trap the majority of harmful contaminants that are present in the air. … A MERV 13 filter is capable of filtering out all particle impurities like dust, lint, pollen, mold, dust mites, pet dander, smog, and smoke. On top of this, it can also trap bacteria and viruses.

What is the difference between MERV 8 and MERV 13?

MERV 8s will collect particles as small as three microns, which is an excellent choice for home owners. This is a good performance level for the average home. The MERV 13 can collect particles as small as . … They remove dust and allergens so well that they pack with dust much faster than a standard MERV 8.

Is MERV 8 good enough?

MERV 5–8 (good): These filters are better at catching small particles (3–10 microns) like mold spores, hair spray, dust mites and animal dander. MERV 9–12 (better): The best option for residential use. … Particles this small include bacteria, tobacco smoke and even the contaminants in sneezes.

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Can I replace Merv 11 with MERV 12?

MERV 12 filters trap 80 to 89 percent of average particles of 1.0 to 3.0 microns, with an average particle size efficiency of 90 percent or better. As you can see, they’re pretty close. That’s why you’re just as good going with a MERV 11 as with a MERV 12. You will get decent results from either.

Is MERV 12 or 13 better?

Filters with a MERV 13-16 value are the most restrictive and can trap the smallest particles like bacteria, tobacco smoke, and burning wood. … MERV 13-16 filters are capable of trapping 90% or more of particles in the 1.0-10.0 micron range.

How do I know my MERV rating?

MERV ratings range from 1 to 20, with lower ratings denoting a lower-quality filter.

  1. MERV 1-4 Filters: Filters with a MERV rating of 1 to 4 do little to trap harmful particles in your home’s air. …
  2. MERV 5-8 Filters: MERV ratings of 5 to 8 indicate a medium-quality filter that’s sufficient for most homes.