Question: Which Home Air Filter Is Best?

Does a good air filter make a difference?

These MERV ratings really do make a difference.

Recent studies have shown that, while air filters with low MERV ratings (1-5) will still minimally protect your HVAC system, these low-efficiency filters offer no better pollutant protection than no filter at all.

However, it’s important not to skimp on your air filters..

Do higher MERV filters restrict airflow?

The higher the rating the better the filter. As the MERV rating increases less and less contaminants and dust pass through the filter making the incoming airflow a better quality. … A higher MERV rating filter is more tightly bound so less particles can pass through.

Is MERV 8 too restrictive?

If your unit is older and/or very sensitive with airflow, use a filter that ranks from MERV 1 up to possibly MERV 6. If you want your air to at least be cleaned and handle dust, mold, pollen, and bacteria, then a MERV 8 will do the job.

Is MERV 11 too restrictive?

MERV 11 are approximately the same. A MERV 11 would be considered an “allergy” filter that does a good job of removing particles in all size ranges. … Most of the thicker filters are sold as a MERV 11 or higher, but they are also available in a MERV 7 or MERV 8.

Is MERV 10 too high?

Washable versions (rated 4 to 10 MERV, usually not pleated) sound like a great way to save money but quality varies with cost. Better quality ones can last up to 8 years. … Disposable pleated high MERV filters (11 to 13 MERV): High-efficiency filters can trap 0.3 micron particles like bacteria and some viruses.

What is the best MERV filter?

What do the MERV ratings mean?1-4 MERV – This is the lowest end of filters. … 5-8 MERV – Air filters with MERV ratings of 5-8 last longer than their less expensive counterparts. … 9-12 MERV – These filters are more efficient and usually offer the best indoor air quality improvement for residential applications.More items…

What MERV rating is best for home use?

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.

Do more expensive air filters work better?

Yes, in general, the more expensive air filters are more effective, but a single person with no pets and allergies might not need as much filtration as a family of five with three pets and a child with asthma.

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.

How do I choose a MERV rating?

MERV ratings range from 1 to 20, with lower ratings denoting a lower-quality filter.MERV 1-4 Filters: Filters with a MERV rating of 1 to 4 do little to trap harmful particles in your home’s air. … MERV 5-8 Filters: MERV ratings of 5 to 8 indicate a medium-quality filter that’s sufficient for most homes.More items…•

How long does a MERV 8 filter last?

three to six monthsAnother factor driving the popularity of MERV 8 filters is that they are inexpensive and easily serviced. Depending on the manufacturer they can last three to six months and even up to a year in residential use.

How often should Merv 8 filters be changed?

every 3-4 monthsThe basic recommendation for furnace filters replacement is every 3-4 months for MERV 8, every 6 months MERV 10 and 11 and every year for MERV 16.