Experience award-winning performance throughout your home with our most powerful—and quietest—air purifier. Ideal for extra-large spaces, high ceilings, & open concepts.
Circulates 1,043 sq. ft. 4x/hr for continuous, clean air
3-stage filtration with UltraHEPA® removes 99.99% of ultra-fine particles
The AirDoctor 5500 is a premium air purifier engineered to deliver hospital-grade air quality in everyday living spaces. At its core is our exclusive UltraHEPA® filter which is independently tested and proven to capture 99.99% of airborne particles as small as 0.003 microns, including allergens, mold spores, smoke, bacteria, and viruses.
Its advanced 3-stage filtration system works from the outside in to address virtually every category of indoor air pollutant- quietly, continuously, and effectively.
Pre-Filter captures larger airborne particles first, including pet hair, dust, and lint, extending the life of the filters below
Premium Carbon/Gas Trap/VOC Filter neutralizes harmful gases, toxic VOCs, and volatile organic compounds (VOCs) that standard purifiers miss
UltraHEPA® Filter captures 99.99% of remaining particles as small as 0.003 microns including allergens, mold spores, smoke, bacteria, and viruses
Designed for extra-large rooms to open-concepts, it circulates air in spaces up to 1,043 sq. ft. four times per hour- the frequency recommended by a Harvard University study cited by the CDC for effective allergen removal.
Proven by science
In third-party laboratory testing conducted by MRIGlobal, AirDoctor 5500 removed 99.97% of live SARS-CoV-2 virus from the air in a test chamber
AirDoctor 5500 removed 99.99% of tested bacteria & viruses, including H1N1, in third-party laboratory testing
AirDoctor 5500 is independently tested & proven to capture airborne particles as small as 0.003 microns in size
Technical specifications
Room coverage: Up to 1,043 sq. ft., 4x/hr
Circulates the air in large rooms and open concepts including living/family rooms, lofts, and primary bedrooms
UltraHEPA® - captures 99.99% of particles to 0.003 microns
Dual-Action Carbon - Activated Carbon with Potassium Permanganate for real protection against gases and VOCs
CADR (smoke): 556 CFM
Dimensions: 16″ W × 16" D × 28.75″ H
Weight: 33 lbs
Optional Smart features: Wifi connect + mobile app with AQI forecast
What's in the box
1 × AirDoctor 5500 air purifier unit
2 × Pre-Filter (permanent)
2 × Premium Carbon/Gas Trap/VOC Filter
2 × UltraHEPA® Filter
Voted “Best Air Purifier”
Awarded #1 air purifier to protect your home.
The gold standard in air purification
We built AirDoctor to be the best.
Maximum coverage
Purify any size room with a range of models.
UltraHEPA
Captures particles 100x smaller than the HEPA standard.
Premium Carbon/VOC Filter
Removes toxic gases & VOCs most air purifiers miss.
Auto-mode
Self-adjusts filtration level based on your air quality.
24-hour timer
Schedule air purification around your daily routine.
Smart app
Control your air quality from anywhere (Smart models).
What the experts are saying
Best Air Purifiers For Mold 2026 "7 Models That Meet Pros’ Strict Standards"
2025 Best Air Purifiers “Best Air Purifier for PM2.5 & Gases”
Reader's Choice 2026 “Best Air Purifier Brand”
Premium air purification with UltraHEPA®
Captures particles 100x smaller than the HEPA standard.
We take over 20,000 breaths per day, inhaling whatever pollutants are in our environment. Even when you’re “safe” at home your health is at risk.
Not only does outdoor pollution make its way inside, there are many indoor sources of air pollution too, including stoves, cleaning products, and building materials. In fact, the Environmental Protection Agency (EPA) says indoor air can be 5x–100x more polluted than outdoor air!
Now the good news. AirDoctor’s UltraHEPA filter removes virtually 100% of airborne contaminants as small as 0.003 microns—that’s 100x smaller than the HEPA standard.
Capture the airborne contaminants hiding in your home’s air and take control of your air quality with AirDoctor.
Inside our Premium Carbon/VOC Filter
Remove the toxic gases most air purifiers miss.
HEPA-only air purifiers only do half the job. They remove harmful particles, but do nothing to protect you from toxic gases and volatile organic compounds (VOCs):
Toxic gases: ozone, nitrogen dioxide, etc.
VOCs: benzene, formaldehyde, & more from furniture, flooring, cleaning products, etc.
Health risks: Asthma, cognitive decline, cardiovascular disease, & even cancer
Removes more pollutants than ordinary purifiers
AirDoctor captures 99.99% of airborne particles.
Pet dander
Dust
Volatile organic compounds
Toxic gases
Mold spores
Pollen
Viruses & bacteria
Smoke
Proven by science, backed by testing
Don’t settle for inferior filters or misleading marketing claims.
Better than HEPA
UltraHEPA® is tested to remove particles 100x smaller than the HEPA standard.
Third-party proof
AirDoctor eliminated 99.99% of tested bacteria & viruses in 3rd-party testing.
Complete peace of mind
AirDoctor also effectively eliminated SARS-CoV-2 in a controlled test chamber.
Protect your home. Protect your health.
Wellness begins with the air you breathe every day.
Better sleep
Lower levels of dust & pollutants in the air reduce nighttime congestion.
Promotes cognitive function
Higher levels of PM2.5 are directly linked to reduced memory.
Reduces odors
Go beyond particles to remove toxic gases & VOCs most air purifiers miss.
Lower risk of infectious diseases
There’s an AirDoctor for every room. Start with where you sleep & gather.
Overall rating: 4.207071 / 5 from 198 reviews.
AI Generated Review Summary
The AirDoctor 5500 is highly regarded for its exceptional air purification capabilities, capturing 99.99% of particles as small as 0.003 microns. Customers appreciate its noticeable difference in air quality, particularly in eliminating musty smells. The product's quality and effectiveness are frequently praised, though some have mixed views on customer service.
Summary topics
Air Quality Improvement (32%): A substantial number of customers remarked that they love the Air Doctor 5500 and find it to be a game-changer.
Air Purifier Performance (6%): Customers expressed satisfaction with the machine, describing it as the best clean air machine they have ever purchased.
Filter Quality (8%): It was observed by customers that the filters are great and highly recommended for air purifiers.
Product Quality (7%): Customers expressed appreciation for the amazing quality of the product, which was mentioned in multiple reviews.
Odor Removal (5%): In general, customers found that the air is pretty clean but it completely got rid of the usual musty basement smell.
"Amazing quality and customer service!" — Salina L.
"The machines themselves are built very nicely." — Sarah P.
Reviews
We use the AirDoctor 5500
"We use the AirDoctor 5500 in our third story loft, which has a very high ceiling and is very nearly one large open space across the entire floor. It has the most work to do of any of our AirDoctor units. This space is mostly the sleeping space and work and meditation space for my wife and she tends to be acutely sound sensitive, so we were delighted with how little sound the AirDoctor makes when it is at the lowest fan speed, which is virtually all of the time when it is set to the automatic mode."
— Alvin S. (5/5)
The air in our home
"The air in our home must be pretty darn clean, since very seldom does the auto kick in to a high fan and then almost immediately goes back down. I think it’s working and I did the test with a match, etc. and it reacted, but I’m just surprised that our air here in Nebraska is that clean inside this house"
— Bruce P. (5/5)
Seems nice and appears to
"Seems nice and appears to do a good job. I already have two of the smaller units so this one was a good addition. My only criticism would be having ordered from you this time (I bought the others from Amazon) I began to receive a diarrhea load of emails. To say the onslaught was extremely annoying is putting it very mildly. Your marketing efforts would have better results sending one or two not the hundred or so I got. It made me wish that even though the price was higher on Amazon I had bought it there and avoided all the trash you sent me. With that much did you really think anyone would read it? Very poor marketing, turned me right off you."
— Janice H. (4/5)
We love our air doctors!
"We love our air doctors! We have four of them in our home! Odors from cooking and other products are eliminated quickly and we feel confident we are breathing clean air - especially when we change out the filters and see for ourselves what is left behind! We are forever customers!"
— Tina P. (5/5)
I have a large room
"I have a large room where I work, cut and sew with fabric and sleep, I purchased the AirDoctorGlobal to help with my sleep. After the first week of using the AirDoctor we had many wildfires in our area and the air quality was terrible. My Airdoctor would adjust when the door was opened and needed to be filtered. It is working wonderfully! Thank you."
— Debra T. (5/5)
Worth it!
"We have had a smaller air doctor for a few years and really like the way it’s performed. We recently moved into a new construction home, with many homes still being constructed around us. Between all the new materials used on the interior, and the dust and debris floating around, along with all of our moving boxes and dust, it was a no-brainer to upsize to this unit and place it on our main level. I truly believe it is helping to offset the gases and to improve the air quality, as our physical symptoms/sinus irritation have improved dramatically over the last few weeks. Very worth the splurge with young children and pets around."
— Veronica G. (5/5)
We love them. We knew
"We love them. We knew we were having air quality inside our house due to very dry weather and dust. Both of us coughing and struggling with congestion. Now we both breathe free and easy. Thank you for your excellent product."
— Patricia C. (5/5)
"Wow im soo happy that I purchased this cause i have a new born baby and also i have two dogs and live in a old house and this airdoctor 5500 air purifier makes breathing in here amazing wow"
— HENRY (5/5)
First unit didn’t work properly.
"First unit didn’t work properly. Returned for a replacement. Second unit would not stay on for more than 30 seconds and then cycled off. Giving the company one more chance. If the third one doesn’t work I’ll return for refund and look for another brand."
— Robert S. (1/5)
Love it!
"Wow, works so well! Made it through Canadian smoke! Have Pets and certainly improves air quality. 5500 in our living area and 3500 in the bedroom! Helps with asthma for sure, we are so happy with this purchase. . . 5+ stars!"
— Vicky G. (5/5)
Q&A
Frequently Asked Questions
Why are air changes per hour (ACH) important when shopping for an air purifier?
Air changes per hour (ACH) refers to how many times the air is changed with new, clean air in a given space within the span of an hour. A Harvard University Study cited by the CDC recommends at least 4 air changes per hour to effectively remove allergens like smoke, bacteria, viruses, dust, and pollen.
What is CADR, and why’s it important?
CADR, or Clean Air Delivery Rate, refers to your air purifier’s efficiency in removing these three contaminants over time: pollen, dust, and smoke. Higher CADR numbers indicate better air cleaning performance. The smoke CADR number is most stringent, reflecting the unit’s ability to eliminate the smallest and most dangerous particles from your indoor air.
Which air purifier is right for me?
Great question! Choosing the right air purifier will depend on the size of your room and the air circulations per hour. According to the Harvard University study, 4 air changes per hour are recommended for optimal purification. AirDoctor units are designed to meet this standard.
How often do I need to change the filters?
AirDoctor 4000 & 1000: Replace UltraHEPA® and Carbon/VOC filters every 6 months.
All other AirDoctor units:
Replace Carbon/VOC filters every 6 months.
Replace UltraHEPA® filters every 12 months.
The indicator light on your AirDoctor will also light on when it’s time to replace your filter
– no more guesswork!
What is your return policy?
We stand behind the quality of our products. That’s why we offer a 30-day money-back guarantee on all purchases. If for any reason you’re not completely satisfied with your AirDoctor, simply reach out to our friendly customer service team at 1-800-221-2515, and we’ll gladly issue you a full refund, minus shipping and processing fees.
Do you offer payment plans?
Yes! If you’re interested in a payment plan option, just select the Affirm payment option at checkout and follow the instructions. Terms and conditions apply.**
**Various purchase plans are available based on approval. Regretfully, Affirm is NOT available in Iowa or West Virginia due to state-specific financial regulations.
Can I use my HSA or FSA to buy AirDoctor products ?
Yes! We've partnered with Truemed to make it easy for you to get reimbursed for your AirDoctor products using your HSA or FSA funds.
To see if you qualify, follow the steps below after making your purchase:
1) Fill out the short intake form from Truemed to check your eligibility. You'll find the link to the form in your AirDoctor order confirmation email.
2) If approved, Truemed will email you a Letter of Medical Necessity within 24 hours.
3) Send this letter, along with your order confirmation receipt, to your HSA/FSA provider for reimbursement.
