MERV Ratings

What Is A MERV Rating?

MERV stands for Minimum Efficiency Reporting Value, and the MERV rating is the primary rating system used for air filtration. Higher ratings remove a larger percentage and broader range of debris from the air. Watch this video and see the MERV rating chart below to learn more.

What Does My MERV Rating Protect Me From?

What is a merv rating

MERV Ratings Video Transcript

Hi, it's Sam here to help you understand air filter rating. What do those ratings even mean and how awesome of a filter do you actually need?

Ok, MERV: that's basically the industry rating standard. But to add to the confusion, some filters use MPR or FPR instead. We'll talk MERV because that's the most common.

There's four levels of filters you need to know. The entry-level is a MERV 6 filter. This is your economy filter that will trap basic household dust and pollen. Get a MERV 6 if you are on a tight budget, like a college kid-type budget. It's not the best for indoor air quality, but it will keep dust out of your air system.

A MERV 8 filter traps pollen and dust, but also dust mites and mold spores. Spend a little more on a MERV 8 if you thought it was gross just now when I said, "dust mites and mold spores". Seriously though, yes, that stuff actually can float around your house and spread.

A MERV 11 filter traps all that stuff plus pet dander, smoke, smog, and airbornes from coughs and sneezes. A MERV 11 is a must if you have kids or pets. It will filter out a lot of the most common air pollutants and irritants. Allergy sufferers definitely need one of these too.

Lastly, a MERV 13. It is so fine that it traps microscopic viruses and bacteria. A MERV 13 is a great choice if a healthy home is a top priority for you and also a good call if you have respiratory issues like asthma. Homes with the elderly or newborn members should look into a MERV 13 as well.

So, there you go. It's really about you, your lifestyle, and the people living in your house. Now before you forget all that, get over to our website and get the right filter for you. You'll get free shipping and the best prices thanks to our price match guarantee. Air Filters Delivered.

Why Should I Increase My Air Filter MERV Rating?

MERV ratings are designed to measure a filter’s ability to capture and hold particles and pollutants. The higher the MERV rating, the more particles – dust mites, pet dander, air allergens, etc – your filter will capture. Matching the right MERV filter to your needs will improve your home's air quality and will extend the life of your furnace or air conditioner.

When to Replace Your Filter by MERV Rating

  • MERV 6 - Change every 30 Days
  • MERV 8 - Change every 60-90 Days
  • MERV 11 - Change every 60-90 Days
  • MERV 13 - Change every 60-90 Days

Want to know the difference between MERV rating, MPR and FPR?

What MERV Rating Should I Use?

Trying to decide what MERV rating is right for your unit and home can be tricky. There’s several important questions to ask:

  • Are you trying to improve air quality for allergy or asthma sufferers?
  • What’s the best air filter if you have pets?
  • Are you living in an urban area with heavier pollution or are you rural?
  • If you’ve answered Yes to any of the above questions or if you simply want to ensure you’re striving towards better indoor air quality, then choosing a higher MERV rating might be the right decision for your situation.

What MERV Rating Can My Furnace Handle?

There is no difference between a furnace and AC air filter and the terms are often used interchangeably. If you’re wondering what MERV rating your unit can handle, there are often some simple steps to take. First, look for the information provided on your unit to see if it’s included in the manufacturer’s recommendation. Newer units shouldn’t have air flow issues with higher MERV ratings although older models may work harder with a MERV 13 filter installed than when they originally had a MERV 6 filter in the air intake.

If you’re really unsure on what MERV rating to use, you can have the professionals make a recommendation during a routine basic HVAC maintenance visit. Most HVAC units can handle different air filter ratings as long as they are the correct size. Learn how to measure your air filter to ensure you purchase the right size to be compatible with your HVAC system.


Shop by Performance

  • MERV 8

    Dust Mites, Mold Spores,
    Lint, Household Dust,
    & Pollen

    MERV 8 Rating
  • Most Popular

    MERV 11

    Pet Dander, Smoke, Smog, Coughing, Sneezing Dust Mites, Mold Spores, Lint, Household Dust, & Pollen

    MERV 11 Rating
  • Recommended

    MERV 13

    Bacteria, Virus Carriers, Pet Dander, Smoke, Smog, Coughing, Sneezing Dust Mites, Mold Spores, Lint, Household Dust, & Pollen

    MERV 13 Rating