Best Air Purifier Reviews: Honeywell vs GermGuardian vs Holmes vs Dyson vs Hamilton Beach

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Air pollution isn’t limited to car exhausts, jet fuel, sprayed pesticides and factory smoke. Mold spores, pollen, pet dander, dust mites and smoke can be trapped inside your home or office which can increase your allergies and asthma symptoms.

Article Overview

What Are Air Purifiers?

Generally speaking, all air purifiers have an intake where the air is taken into the system to be filtered and another spot where it’s released after filtration.

An air purifier, the air in your home will smell and feel squeaky clean. You’ll notice your ability to breathe easier and may even find that you don’t need Claritin as often! (Achoo).

Air Purifier Terminology and Technology

Before we get into our best picks, we wanted to explain a little more of the technical side of how they work and what to look for when picking out the right air purifier for you.

What Are HEPA Filters?

High-efficiency particulate air filters (aka HEPA filters) force air through a mesh and collects harmful particles like mold spores, pollen and dust mites. HEPA filters are widely used for air purifiers and we’ve noted for each product which has a true HEPA filter and which does not.

Air Purifier Certifications

There are three certifications we discuss in this article: Clean Air Delivery Rate (CADR), Energy Star and the Association of Home Appliance Manufacturers (AHAM).

  1. CADR is a measurement of how fast an air purifier delivers filtered air. The higher the CADR the better.
  2. The US EPA gives products the Energy Star rating when they meet energy efficient guidelines.
  3. AHAM is an organization that inspects the performance of household appliances.

Note: Not all of the products listed below will have all three of these ratings. We provided information about these three ratings for the products we could find.

What Is a Micron?

You’ll hear us refer to microns in this article and the size of microns an air purifier can handle. A micron is equal to one-millionth of a meter (aka it’s super small).

To give you some perspective, below are some particles in our air and their size in microns.

  • Human hair: 80-100 microns
  • Pollen: 30 microns
  • Mold spores: 10-30 microns
  • Household dust: 10 microns
  • Pet dander: 5 microns
  • Smoke: 1 micron

Note: if you want your air purifier to get rid of smoke, you’ll need one that can filter particles as small as 1 micron. If you want an air purifier to help with pet odor and dander, you’ll need one that can handle particles as small as 5 microns.

Best Air Purifier Reviews

Ahhhhh, now you can stop holding your breath as it’s the moment you’ve been waiting for: our recommendations for the best air purifier.

Note: While conducting our research for this article, we noticed some users complaining of cool air being released from the air purifiers. To clarify, this is totally normal, and it is natural for there to be a slight breeze.

GermGuardian Review

GermGuardian AC4825 3-in-1 Air Cleaning System#1

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The GermGuardian AC4825 is our pick for best HEPA air purifier due to its high performance and amount of positive feedback we’ve found. This air purifier claims to capture 99.97% of dust and allergens (as small as .3 microns) including dust, pet dander, mold spores and plant pollens.

It has UV-C light technology, which kills bacteria, viruses (including rhinovirus, e.coli and streptococcus), germs and mold spores in the air. The charcoal filter reduces cooking, smoking and pet odors and the HEPA air filtration system helps reduce exposure to asthma triggers.

This best home air purifier is great for medium sized rooms and users rave about it being the best air purifier for pets.



  • CADR rated 100+
  • Filter is replaced every 6-8 months
  • Earned the Energy Star by the U.S. EPA
  • Certified energy efficient
  • Is great at removing smelly odors
  • Customers state allergies are more manageable indoor with this
  • Small design
  • Quiet on low and medium
  • Easy to setup
  • HEPA filter
  • Small light can be annoying to some if they keep it running during the night; however, it is easy to cover
  • Louder when on high mode
  • A small portion of customers say there is a plastic smell when you first use it, but it goes away after a day or two of use

GermGuardian Price

Holmes Review

Holmes HAP242-NUC#2

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If you’re looking for a less expensive option to use in a 10 x 11′ room, then the Holmes HAP242-NUC air purifier is a great choice for you. It claims to remove up to 99% of airborne particles as small as 2 microns. The purifier can be placed vertically or horizontally on a desk, table or other surfaces.

As stated, it works best for smaller rooms, approximately 110 square feet, so using this in an office or bedroom is ideal. This Holmes air purifier has a carbon filter which helps remove up to 44% of odors from the air.

Holmes aims toward reducing allergens, and we think it’s the best air purifier for allergies.



  • Quiet on low, medium and high modes
  • CADR rated 70
  • Filter change indicator
  • Small design
  • Filter lifespan varies based on the filter you buy
  • Great value
  • Only collects particles down to 2 microns
  • Not stylish
  • Some customers complain of a chemical smell
  • Not the best air purifier for smoke
  • HEPA type filter is not a true HEPA filter

Holmes Air Purifier Price

Honeywell Review

Honeywell 50250-S True HEPA Air Purifier#3

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Honeywell is a household name making security equipment, HVAC equipment, doorbells and air quality equipment including air purifiers. The glass fiber HEPA filter collects up to 99.97% of particles as small as .3 microns.

The system will notify you when you need to change or clean the filter. The pre-filter, which is carbon activated, captures larger particles and reduces odors and should be replaced every three months. However, if you vacuum the pre-filter, it can be extended to 3-5 years.

This Honeywell 50250-S air purifier is the best air purifier for mold and more.



  • Filter can last 3-5 years
  • CADR rated 250 for smoke, dust and pollen
  • AHAM Certified for rooms up to 390 sq foot
  • Filter change indicator
  • 360° air intake
  • Customers state allergies are more manageable indoor with this
  • HEPA filter
  • Not stylish
  • Louder when on higher modes
  • Some assembly required, but customers state it’s easy
  • Small light can be annoying to some if they keep it running during the night; however, it is easy to cover
  • Cannot be placed against a wall

Honeywell Air Purifier Price

Other Companies in Category Name

Below you’ll find an alphabetical listing of other companies we’ve reviewed.

DysonHamilton Beach

Dyson Review

Dyson Air PurifierView on Amazon

If you’re looking for a fancy looking air purifier look no further. The Dyson Pure Cool Link Air Purifier claims to remove 99.97% of allergens and pollutants as small as .3 microns.

This is the only air purifier in this article with a remote control and app. The app includes information about the filter’s life, acts as a remote control and lets you schedule when the purifier is on and off. It also has a night mode, which is quieter and dims the display.

The main reason this didn’t make our top three is because of its high price point. You can get other air purifiers for much less and they do just as good of a job as this Dyson does. Unless you want a high-tech air purifier with an app, we recommend looking at our top three.



  • 360° air intake
  • Night mode
  • App
  • Filter is replaced every 12 months
  • HEPA filter
  • Expensive
  • Since it’s more technical with the app it can be tricky getting it setup at first
  • Issues with the app in the past

Dyson Air Purifier Pricing

Inside Look at the Dyson Air Purifier

Check out this video to see how techy this air purifier truly is.

Hamilton Beach Review

Hamilton Beach 04383A Air PurifierView on Amazon

Hamilton Beach is another household name for appliances. This 04383A air purifier can reduce allergens from a room up to 160 square feet. It has a permanent HEPA filter, which can be vacuumed clean.

This Hamilton Beach air purifier can be placed horizontally or vertically to fit into your desired location easily. Although it doesn’t capture particles as small as some other purifiers in this article, we think it’s the best air purifier for dust since it can handle anything as small as 3 microns.

* One tip we read online was that the carbon filters for this air purifier can be expensive. Some users have purchased a sheet of carbon filter and cut it to size. They’ve reported it works the same and it saved them money. Something to consider if you purchase this air purifier. You can probably do this with other air purifiers, but we found an overwhelming number of users doing this for this particular one.



  • Small design
  • Easy to setup
  • Is great at removing smelly odors
  • Bought carbon filters are shaped strange and do not cover the HEPA filter
  • Only collects particles as small as 3 microns
  • A small portion of users complain this air purifier did nothing for them
  • HEPA-grade filter is not a true HEPA filter

Hamilton Beach Air Purifier Price

Other Types of Filters

Here are two other possible solutions to get rid of unwanted indoor air pollutants.

What Are Furnace Filters?

Every furnace has an air filter that needs to be changed regularly. Depending on the type of air filter you get will determine how often you need to change the filter.

For example, the filters we use at our home last three months. Put a reminder on your calendar to check your filter to help keep your furnace running smoothly.

What About Whole Home Air Purifier Systems?

If you don’t want to have an air purifier in every room you can install a whole home air purifier solution. These air purifiers can be in the thousand dollar range, so they aren’t as inexpensive as the air purifiers we reviewed for this article.

However, it is an investment, so if you want a house full of clean air, a whole home solution may be best for you.

Bring the Outdoors In

According to Forbes, we spend 90% of our time indoors. Which is frightening since the air quality is also often worse inside than it is outside. An air purifier can clean your air to give you a breath of fresh air inside your home that’s greatly appreciated.

But why stop at air? There are other ways you can improve the quality of your home’s health including installing adding a water filter to have fresh, healthy spring water to drink and an organic mattress so you can have a good night’s sleep.

What do you use your air purifier for?

Disclaimer: The information provided through this website should not be used for diagnosing or treating a health problem or a disease. It is not a substitute for professional care. If you have or suspect you may have a health problem, you should consult your health care provider.
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One of Kimberly’s favorite things to do is cook. She is trying her best to be more conscious about the nutrients she puts into her body and enjoys trying new recipes. Kimberly grew up helping her dad with the family garden and hopes to have her own garden some day. She enjoys brightening up her dishes with the food mother nature can provide and enjoys composting her produce scraps.

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Room Dehumidifier
It’s too difficult to select a unit between these branded air purifiers. Well, I would like to prefer f=germ guardian and Honeywell air purifier.
I’ve been fighting allergies like crazy lately! And I don’t leave the house much (work at home) so I think an air purifier might help especially since I like to work with the windows open. Going to give the Dyson a shot (even though it’s pricey I like the sleek design). Thanks~