Quick Answer: Does MERV 11 Restrict Airflow?

Does Merv 5 restrict airflow?

How will a higher quality filter impact the airflow to my HVAC unit.

The short answer is that it can, but it’s not really an issue except under extreme circumstances.

Most modern HVAC systems have no problem working with higher MERV filters..

Do some air filters restrict airflow?

Because they restrict airflow to your HVAC system. Pleated, high-MERV filters definitely capture a lot of pollutants, but they also restrict the movement of air into your blower or furnace. … These cover all the air filtration basics – dust and pollen removal, for example – without restricting airflow.

Will MERV 11 hurt my furnace?

Wrong. While the highest MERV ratings are the most effective for air quality, they can harm your HVAC system. A higher MERV rating means a higher resistance, which means less airflow.

What MERV rating can my furnace handle?

The ideal MERV filters for both air filtering and furnace efficiency are 7-13, experts say. These filters can be used without any modifications to your equipment. Your system may handle MERV 14-16 with no discernable stress. However, many residential systems require modifications to pull air through these filters.

What is the best MERV rating for AC filters?

16Higher MERV ratings are better at capturing smaller particles. That’s why hospitals tend to use MERV 16 or higher, to capture the most pollutants possible. Although lower MERV rated filters are less efficient overall, they let more air to go through the filter, which can assist the operation of the HVAC system.

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 often should you change a MERV 11 filter?

every 6 monthsThe MERV rating also determines generally how often to change your furnace filter. MERV 8 filters should be changed every 3-4 months, MERV 10 & 11 filters every 6 months and MERV 16 filters every year.

Is MERV 12 too high?

9-12 MERV – These filters are more efficient and usually offer the best indoor air quality improvement for residential applications. Deep pleated filters fall into this category. Because they work so well at removing airborne pollutants, they must be regularly checked to ensure proper airflow.

What MERV rating does Trane recommend?

MERV-13ASHRAE recommends upgrading air filters to MERV-13, or higher if possible.

What is the best air filter for your home?

See our full list of Air Filter RatingsAprilaire. Allergy & Asthma 216.Aprilaire. Healthy Home 213 MERV 13.Aerostar. MERV 13.FilterBuy. MERV 11/Gold.Airx Filters. Health 202001-6 MERV 13.Accumulair. Diamond Filters – APR 1950.Rheem. Dust & Pollen FPR 4.3M Filtrete. 1085D MPR Micro Allergen Extra.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.

What MERV rating is HEPA?

High-Efficiency Particulate Air (HEPA) filters are not MERV-rated, but a HEPA filter is typically considered as MERV 17 to 20, which is the highest group in MERV ratings. True HEPA filters have at least 99.97% efficiency in trapping 0.3-micron particles.

Why are the highest rated MERV filters not used in residential applications?

Higher value MERV rating equates to finer filtration, meaning fewer dust particles and other airborne contaminants can pass through the filter. 7)Why are the highest rated MERV filters not used in residential applications? The pressure dropacross high MERV filters is more than residential blowers can overcome.

Is a 2 inch filter better than a 1 inch?

When it comes to a 1 inch vs 2 inch furnace filter you could use a 2 inch filter if your vent is deep enough and a 2 inch filter will generally last longer since it has more media.

Do higher MERV filters restrict airflow?

Because high MERV filters are designed to catch large and small particles and therefore will get dirty quickly. And since the filter is thin, the filter will quickly fill up with particles and block airflow.

How does MERV rating affect airflow?

A MERV Rating is a good indication of the effectiveness of an air filter on your central HVAC split system. 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.

Is MERV 7 good enough?

For residential use, a filter with a MERV of 6 or 8 is more than enough for most people. For those with allergies to dust and smaller pollen particles, choose a MERV of 8 or 10.

What MERV rating do I need?

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.

What is the lowest MERV rating?

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.

Which is better MERV 11 or MERV 13?

For most household uses, the highest MERV rating used will be MERV 13 filters. … “The MERV 11 air filters remove a higher percentage of contaminants in the air that will increase indoor air quality and maintain the efficiency of the HVAC unit.