Quick Answer: What Does Merv Mean On A Furnace Filter?

Is MERV 13 too restrictive?

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.

ASHRAE recommends MERV 6 or higher..

What does MERV 12 filter out?

What is a MERV rating?MERV RatingAverage Particle Size Efficiency in Microns101.0 – 3.0 50% – 64.9%, 3.0 – 10.0 85% or greater121.0 – 3.0 80% – 89.9%, 3.0 – 10.0 90% or greater140.3 – 1.0 75% – 84%, 1.0 – 3.0 90% or greater160.3 – 1.0 75% or greater3 more rows•May 5, 2020

What is the lowest MERV rating?

MERV 6MERV 6 is the lowest MERV rating offered by AirFilters.com. Though not recommended for allergy and asthma sufferers, filters with a MERV 6 rating are 8 times more efficient than the regular cheap fiberglass filters.

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 MERV rating for air 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.

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.

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

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.

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 best air filter for your home?

So here is my list of The 10 Best Furnace Filters.AIRx Health 1″ MERV 13 Furnace Filters. … Honeywell FC100A1037 Ultra Efficiency 4″ Furnace Filters. … Nordic Pure 4″ Furnace Filters. … FilterBuy 1″ Furnace Filters. … AIRx ALLERGY 1″ Furnace Filters. … Filtrete Micro Allergen 4″ Furnace Filters. … X6673 Lennox 4″ Furnace Filters. … Filtrete Clean Living 1″ Furnace Filters.More items…•

Can I use a MERV 13 filter in my furnace?

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.

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.

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.

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

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 is the best type of furnace filter to use?

BEST OVERALL: Nordic Pure MERV 12 Pleated AC Furnace Air Filters.BEST SMART FILTER: Filtrete Smart AC Furnace Air Filter.BEST BANG FOR THE BUCK: FilterBuy MERV 8 Pleated AC Furnace Air Filter.BEST FOR ALLERGIES: AIRx ALLERGY MERV 11 Pleated Air Filter.BEST FOR PETS: Aerostar Allergen & Pet Dander Pleated Air Filter.More items…

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.