Question: Can My Furnace Handle MERV 11?

Will MERV 13 hurt my furnace?

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..

Is MERV 11 good?

A MERV 11 filter would make their lives a lot more comfortable because it can pick up even smaller particles than a MERV 8 filter. If members of your family have those health concerns, we recommend a MERV 11 air filter—especially in the spring and summer seasons.

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.

Will MERV 12 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….Learn how to maintain your. home and HVAC this fall.MERVMinimum Particle Size9–123.0–1.0 μm13–161.0–0.3 μm17–20< 0.3 μm2 more rows•Sep 20, 2019

What MERV rating should I get?

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.

Are cheap furnace filters better?

Cheap fiberglass filters are designed to stop dust, debris and hair from gunking up the system. While they do little to filter out allergens and other irritants, using them keeps your HVAC system clean and efficient. … They can add more resistance to airflow, which makes the system more expensive to operate.

Is a 2 inch filter better than a 1 inch?

1″ filters suck. They block a lot of air flow. 2 inch is the smallest I put in, and 4″ is optimal. Sure it filters, but it doesn’t have enough surface area to allow the airflow a system needs.

What is the lowest MERV rating?

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…

Does MERV 11 restrict airflow?

Be aware, too, that some retailers also use their own rating system instead of MERV. A decade ago, it used to be that if you had an HVAC system that used panel filters rated 6 through 9 MERV, putting in a MERV 11 or higher filter would restrict airflow (known as filter pressure drop).

Is MERV 11 or 13 better?

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.

What MERV rating is filtrete 1500?

3M Filtrete 1″ Air Filters Comparison Chart:Basic DustUltra AllergenAvailable in:9 sizes30 sizes* MPR Rating:3001500MERV Rating:512** Efficiency:34%90%5 more rows

What is the best air filter for your furnace?

Best Overall: Honeywell Elite Allergen Pleated FPR 10 Replacement Air Filter. One of the hands-down best furnace filters you can buy is the Honeywell Elite Allergen Pleated Air Filter. This highly-rated filter has the highest FPR possible and comes in a wide range of sizes, fitting most all furnaces.

How often should you change a MERV 11 filter?

every 30 daysThe filter you choose determines how often you need to change it. We recommend that most homeowners buy a mid-level MERV 10 or 11 filter and change that filter every 30 days — for better air quality and energy bill savings.

How often should you change your furnace filter?

A good rule of thumb is to change 1-2 inch filters every three months, 4 inch filters every six months and 5 inch filters every 12 months. Signs your air filter needs changed: The filter is visibly dirty. Certainly if you can’t see the material of the filter itself, it should be replaced.

Is MERV 7 good enough?

For most residential systems, experts suggest using an air filter with a MERV value between 7 and 12. These filters offer adequate filtration and remove common contaminants such as pollen, mold spores, dust, pet dander, and tobacco smoke.

Is MERV 12 better than MERV 11?

Luckily, MERV 11-rated filters handle those particles — such as pet hair and dust mites — with ease. … 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.

Are high MERV filters bad for furnace?

Most modern HVAC systems have no problem working with higher MERV filters. If your home has a very old HVAC system, or you use a higher MERV filter and never change it, you could run into airflow problems, but under normal circumstances, you won’t be stressing out your HVAC system that much with a higher MERV filter.