Decoder analyzed more than 75,560 reviews to find which air purifiers under $400 are loved by shoppers, and which ones standout based on the following important qualities:
- Coverage Area
- Filter Life
- Filtering Power
- Ease Of Cleaning
- Noise Level
Read more about what factors to consider when shopping for air purifiers in our buyer's guide.
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Overall, this is a great air purifier for those who are looking for something to efficiently clean a large room. It's quiet on lower settings and the filter life is very long-lasting. However, it's not the best at removing household odors and replacement filters can be pricey.
Rank based on 1,358 reviews
This is a great air purifier for those with allergies or who want to remove dust and odors from their home. The filters are easy to clean and the unit offers excellent coverage. However, it can be noisy on high speed.
Rank based on 3,947 reviews
This air purifier is good for small to medium sized rooms and does a great job of removing dust, pollen, and pet dander. It's easy to clean and has a long filter life, but it is noisy on the highest setting.
Rank based on 2,767 reviews
This air purifier is quiet and efficient, with a filter that lasts for two months or more. It's great for large rooms and houses, and easy to take apart and clean.
Rank based on 1,392 reviews
This air purifier is quiet, easy to use, and removes a variety of airborne particles. However, replacement filters are necessary every few months and can be costly.
Rank based on 729 reviews
If you're looking for an air purifier that won't disrupt your sleep or work and can cover a large area, this is a great option.
Rank based on 1,397 reviews
This air purifier is great at removing allergens from the air and lasts a long time. It's easy to replace the filters and clean, but can be quite loud on the highest setting.
Rank based on 5,000 reviews