Air Purifiers Reviews

Who's better?

IQ Air vs Honeywell

We've analyzed the best Air Purifiers to help you find the right solution for your needs.

2025 Air Purifier Reviews

Here you can see how IQ Air and Honeywell match up head-to-head in a battle for the Best Air Purifiers in 2025.

Winner

IQ Air

  • Pricing: $399 to $10,000+
  • Coverage: 70 square feet to entire building
  • HyperHEPA technology filters viruses and bacteria

IQAir offers you high-end air purifiers with HyperHEPA technology that can filter out even the tiniest particles, including viruses and bacteria. While their products are quite expensive, they provide the best air filtration money can buy, for personal use to whole-house systems. Your warranty can allegedly be extended up to 10 years, but it requires extra steps and ongoing filter purchases, and some customers have not had their warranties honored. Overall, IQAir seems to be best suited for commercial spaces (and commercial budgets).

Honeywell

  • Pricing: $69.95 to $219.95
  • Room coverage: 50 to 351+ square feet
  • HEPA filtration

Honeywell offers over 20 different air purifiers, mostly for smaller spaces, with prices ranging from about $70 to $400. Their air purifiers use HEPA filtration to remove airborne particles and are Energy Star certified for efficiency. While they offer good features on paper, like multiple cleaning levels and quiet operation, independent reviews on Trustpilot are poor, and the company has a low rating with the Better Business Bureau. This suggests that while Honeywell's air purifiers might look good in theory, you may find that they don't live up to your expectations in practice.

Imagine coming home after a long day, only to be greeted by a stuffy atmosphere and a musty smell in your living room. You open the windows, but the outdoor air carries in pollen that makes you sneeze. Sound familiar? An air purifier might be just what you need.

These devices can help remove pollutants, allergens, and odors from the air to make your space cleaner and more comfortable. While not a substitute for other preventive measures, air purifiers with HEPA filters may also help reduce the risk of airborne transmission of viruses, including the one that causes COVID-19, by removing particles from the air.

Many people can benefit from using an air purifier. If you have allergies or asthma, an air purifier can help reduce symptoms by removing irritants like pollen, dust, and pet dander from the air. If you live in an area with high pollution levels or wildfires, an air purifier can help filter out harmful particles. Even if you don't have specific health concerns, an air purifier can help improve overall air quality and eliminate unpleasant odors.

There are several types of air purifiers available, each using different technologies to clean the air. HEPA (High-Efficiency Particulate Air) filters are the most common. They can remove 99.97% of particles as small as 0.3 microns. This includes dust, pollen, and some bacteria.

Activated carbon filters are great for removing odors and gasses. They work well for getting rid of cooking smells, smoke, and chemical fumes.

UV-C light purifiers use ultraviolet light to kill bacteria and viruses. They're often combined with other types of filters for more thorough air cleaning.

Ionizers release negatively charged ions that attach to airborne particles, making them too heavy to stay in the air. However, ionizers can produce ozone, which can be harmful to your health.

When shopping for an air purifier online, consider the following factors:

Top Consumer Reviews has evaluated and ranked the best air purifiers available. We hope this review helps you find the best air purifier for your needs. With the right air purifier, you can breathe easier and enjoy cleaner, fresher air in your home, office, or even car.

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Air Purifier FAQ

What is an air purifier?
Air purifiers are machines that clean the air in a room or in an entire home or office. They remove pollutants like pollen, pet dander, and dust mites from the air you breathe. Given that the EPA says that the level of indoor pollutants can be as much as five times higher than outdoors, it's obvious why so many people use an air purifier to breathe easy!
How does an air purifier work?
An air purifier draws in the air from the environment, passes it through a filter that catches pollutants and/or odors (depending on the filtration type you choose), and pushes out clean air into the room. Some purifiers are portable, while others are installed with your HVAC system to clean the air in your whole house.
What's the difference between a carbon filter and a HEPA filter?
HEPA stands for High-Efficiency Particulate Air; these filters remove 99.97% of any particles that are 0.3 microns or larger, making them the best choice if you're trying to remove dust mite residue, pollen and pet dander particles from your air. Carbon filters target chemicals and odors, like cigarette smoke, kitchen smells, pet odor, and so on.
Are air purifiers expensive?
They can be - but they don't have to be. You can find small single-room air purifiers for under $60, but most fall in the $200-$700 range. Whole-house air purification systems are going to be the most costly, usually from $1,000 to $5,000+ (which includes professional installation). And, don't forget to factor in the cost of filters, which will need to be replaced periodically depending on the manufacturer's recommendations.
How often do I need to change the filters on my air purifier?
Check the instructions on your machine. Yours may have filters that can be cleaned and reused, or they may have to be replaced every time. Expect your air purifier to have anywhere from 2-6 filters that need to be changed every 6-12 months - but again, be sure to read the specs on your particular air purifier and follow the recommended maintenance schedule.
How long should I run my air purifier?
Most manufacturers recommend running your air purifier continuously. If yours comes with multiple speeds, you can set it to a lower speed while you're away to save energy and then turn it up when you return.
How much space will my air purifier cover?
That depends on the machine you choose. If you buy a portable one designed to cover a single room, it will typically cover up to 700 sq.ft. Read the specs carefully to determine if the air purifier you're considering will be effective in the space where you intend to use it. For larger-scale air purification, a whole-house model might be a better investment.
Will an air purifier be noisy?
Not necessarily. Most machines will be louder when you first turn them on, to get a good start on cleaning the air in the room you're in. But, once the pollutants have largely been removed, the fan speed usually slows down automatically for quieter operation. They're typically not much louder than a portable fan.

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