7 Best AC Filters for Allergies [And Purifiers!]

Any time spring comes around, I’m reminded of how awful my allergies are. I didn’t know this, but if you buy the right AC filter it can help a ton with your allergies.

I found the Filtrete Healthy Living Ultrafine Particle Reduction filters to be one of the best ac filters for allergies for your furnace, AC or HVAC system.

Another great choice is also the Filtrete Healthy Living filters. You may also be interested in MSA3 Air Purifier for Home if you don’t find the right filters for your AC system.

Below you’ll find the 7 best air filters for allergies.

Let’s get started!

7 Best AC Filters for Allergies

Filtrete Healthy Living Ultrafine Particle Reduction

  • Size: 14×20 to 20×30″

What I like

These filters claim to be better than washable filters, non-electrostatically charged filter and fiberglass filters! That’s a big claim, but with their 3 in 1 technology that traps particulates, you’ll be able to enjoy cleaner air inside of your home.

These filters have an incredible MERV rating of 14 which is the highest on this list. That means they capture finer particles better than any others. You do however have to pay a hefty price tag for this type of filter.

It captures 81% of small particles including pollen, pet dander, smoke, bacteria and even viruses. You will be able to filter almost anything that passes through this air filter for allergies other than the air itself.

If you want to take a deep breath in and have peace of mind when it comes to air in your home and allergies, this is one of the best air filters for that.

What I Don’t like

I don’t like the hefty price tag for these air filters. Unfortunately, considering how well they’re made, that’s the only caveat.

If you aren’t sure your HVAC system can support MERV 14 filters, it’s recommended you do so. They can be known to choke up some older systems so do make sure yours will work with it.


If you’re after the best air filters for allergies, you’ll be hard-pressed to find a better option than these.

Filtrete Micro Allergen Defense Deep Pleat

  • Size: 16×25 to 20×25

What I like

These MERV 11 rated filters will do a great job of keeping your home particle free. With the 3 in 1 technology from 3M, your HVAC system will have an easier job of pumping fresh, clean air throughout your home.

You’ll be free from tiny particles as lint, dust mites, mold spores, pet dander and smoke/smog. Reviewers mention that when 3M says they’re going to give you a MERV 11 rated filter, they mean it!

One drawback is that you will have to change your filters every 3 or 4 months rather than yearly which will drive up the cost of your filter usage. Make sure you measure and get the right size filter for your HVAC system.

This air filter is for air conditioners, furnaces, or your HVAC system so you can rest easy knowing each of your requirements will be met.

What I Don’t like

Since it’s not MERV 13, it will still let bacteria particles through the air filter. Check out the first option if you need to remove most bacteria from your air supply.


If you’re after a great, affordable air filter for your home, these will do just that.

Filtrete Healthy Living Ultra Allergen

  • Size: 12×12″ to 20×30″

What I like

This HVAC filter for allergies is great at capturing particles like smoke, bacteria, and viruses. It doesn’t just catch small particles, it can also capture larger particles like lint, household dust mites, and pollen. This way, you’ll be able to use the 3 in 1 technology to keep you allergy-free.

The MPR or (Microparticle Performance Rating) on this filter for allergies is 1500 MPR. A good MPR rating starts at 600, but with 1500 on these filters for allergies, you’re sure to get optimal protection and airflow.

It fits in furnaces, air conditioners, or HVAC systems. As long it fits any size between 12×12 to 20×30 inch, you’ll be good to go. It’s certified asthma and allergy-friendly and promises better protection.

They recommend changing out your filters for allergies every 90 days considering dirty filters can cause your allergies to flare up. If you’re forgetful like me, you’ll be able to sign up for their filter change reminder program and you’ll never have to worry about dirty filters again!

What I Don’t like

Nothing bad to say about these air conditioner filters!


Your HVAC system, as well as your indoor air quality, will improve once you upgrade to this air filter. As long as you remember to change your filter, you should be protected from mold spores, dust mites, and any other bothersome particulates.


  • Size: 14×14 to 20×25
  • For: Furnace

What I like

With a MERV rating of 11, these furnace filters are your best bet. You won’t have to worry about these HVAC filters choking up your HVAC system. Once you start hitting a MERV rating of about 13, then you may have problems with circulating the air throughout your home.

This furnace filter will trap dust mites, dust, lint, mold spores, pet dander, and other tiny particles. They will also filter smoke and smog. With these particles being captured with this high-quality air filter, you won’t ever have to worry about allergies again.

With 6 filters in a box, you won’t have to buy replacement filters for a year and a half with regular 3-month filter changes. While there are plenty of options out there, this is one of the best furnace filters I could find.

What I Don’t like

These filters are only furnace filters for allergies so you won’t be able to use these in your air conditioning system.


If you’re after the best furnace filters around for allergies, then look no further, this is the right filter for you!

Filterbuy 20x20x1 Air Filter

  • Size: 20×20″

What I like

I like that these air filters can work as your furnace filter, HVAC system or air conditioner. You won’t have to worry about buying a specific filter for each system, this is an all-in-one that’ll keep your allergies at bay.

With its MERV rating of 8, it can trap up to 90% of airborne allergens that may otherwise stuff you up. It also keeps odors at bay if you have issues with your air conditioning smelling like vinegar from condensation buildup.

With its pleated design, it also has a prolonged lifespan of up to 3 times more than fiberglass filters for allergies. It was also designed and manufactured in the USA! No matter if you’re looking to protect your home from smog, dust mite debris, microscopic particles, or anything else, these disposable filters will do the job.

What I Don’t like

These cost a bit more than the other options and only come in a pack of two. If you’d like to save your money, the first option is a pack of 6 and is almost the same price.


If you’re looking for American-made filters for allergies, these will help by improving your indoor air quality and keeping your air conditioning unit working well.

Aerostar MERV 11 Pleated Air Filter

  • Size: 18×20

What I like

These air conditioning filters (or furnace filters) are another great choice to add to your roster. You’ll be protected from spores, dust mites, pet dander, and your allergies will thank you for it.

While regular air filters will be able to filter out some stuff, these are MERV rating 11 which means they’re going to pick up finer particles that other air conditioner filters won’t be able to. The only thing they don’t catch is bacteria but you’ll need a MERV rating of 13 which you’ll find in the options above.

They utilize pleated materials so that your air ducts and your lung stay happy and healthier. The price of these is also affordable if you’re looking to save on the best air conditioner filters.

What I Don’t like

I don’t like that they only come in one size that may not fit your system.


If you’re after 18×20 air filters for allergies, this is a great choice.

Nordic Pure 20x20x1

  • Size: 20x20x1

What I like

I love that the MERV rating of 14 on this air conditioning filter will help trap even the finest particles hanging around in the air. You’ll also be able to enjoy from an MPR of 2800.

Not only does this help to trap viruses and allergens from the air, it also helps fight household odors. No one likes a stinky house, and this filter will help make your home smell fresh and clean all day long!

If you’re all about being green, don’t worry, these filters use recycled frames to help reduce waste. If you have a pet, they also filter pet dander which can help if you have allergies but still love your furry friend.

What I Don’t like

Some mention that these are too restrictive for their furnace, so do check with your manufacturer if they can support MERV 14 filters.


If you’re looking for an eco-friendly, high MERV rating filter, then this is the right pick for you.

Best Alternative Option

MSA3 Air Purifier for Home

What I like

If you’re after air purification but you haven’t found the right AC filters for your HVAC system then maybe an air purifier is the right choice for you!

This air purifier removes 99.97% of allergens, dust, odor smoke and pollen from the air. In around 30 minutes it can purify a room of 500 square feet. Within 10 minutes you should notice a difference!

It also has a 3 in 1 true HEPA filter. It has a pre-filter, which helps capture finer particles, and then by the 3rd stage, it’s removed bad smells, pet odors, and VOC in your room. You’ll get the best of both worlds with air purification and a better smelling home.

It also has a sleep mode, timers, child locks and filter life display. It runs at a quiet 25-45dB which is quiet enough to sleep with it on in the room.

My favorite feature about this purifier is that it doesn’t put harmful ozone into your room. Some people don’t know this, but ozone can be deadly if used improperly. It’s better to not have it around the house, especially if you’re wanting to use the room while your purifier is working.

What I don’t like

Some purchasers mention a slight whine of the motor while others didn’t notice it at all.


I think that if you’re after an air purification system but don’t want to bother with expensive filter replacements every few months, this air purifier is a great choice! It also comes with a great, unbeatable price tag for this type of machine.

AC Filter for Allergy FAQ

Do AC filters help with allergies?

Regular filters won’t do a great job of trapping microscopic particles that you would want to remove from your air supply. You want to look for MERV rating of 11 or higher to aid in improving indoor air quality.

While some people recommend a MERV rating above 17, that can be overkill for most residential homes. Not to mention, they’re quite hard to track down and purchase. The highest MERV rating on this list is 14 and that should do plenty for people with allergies.

Does MERV 13 filter pollen?

Yes, MERV 13 rated filters can capture pollen, mold, bacteria, viruses, smog, and even smoke!

What MERV rating should I use for allergies?

Ideally, you want a MERV rating of at least 11 or higher to help reduce smaller particles in your home. 13-16 is the same that hospitals use, so going to 17 isn’t recommended and can choke up your HVAC system.

Final Thoughts

Allergies can be a big downer and when you even have issues inside of your own home, it can be downright bothersome! With choices like the Nordic Pure 20x20x1 and Filtrete Healthy Living Ultrafine Particle Reduction you should be able to reduce the finest particles floating around in your home.

Be sure to check with your AC system to ensure they can handle finer rating MERV filters. You don’t want to blow out your HVAC system! Another option to consider for smaller rooms is the best air purifier and dehumidifier all in one.

About Roy Cohen

Roy Cohen has a burning passion for heating, cooling, and ventilation. He aims to help you save money on expensive repairs and bring you the best HVAC products. He has years of experience behind him in HVAC repair and garage maintenance.

You can find Roy at his LinkedIn or his email: [email protected]

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