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AD3500 Classic
Awarded #1 air purifier to protect your home.
The gold standard in air purification
We built AirDoctor to be the best.
Purify any size room with a range of models.
Captures particles 100x smaller than the HEPA standard.
Premium Carbon/VOC Filter
Removes toxic gases & VOCs most air purifiers miss.
Self-adjusts filtration level based on your air quality.
Schedule air purification around your daily routine.
Control your air quality from anywhere (Smart models).
What the experts are saying
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):
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: 4.719796 / 5 from 1374 reviews.
The AirDoctor 3500 air purifier is highly regarded for its significant improvement in air quality, ease of use, and effective dust reduction. Customers praise its clean and fresh air output, advanced filtration system, and outstanding customer service.
Review topics: ["packaging","quality","customer service","smell","light","value","design","efficiency","results","support","size","feel","speed","performance","staff","problems","service","skin","sound","price","ease","instructions","wifi","use","replacement","air","air doctor","filters","unit","difference"].
"After using our two, new air purifiers continuously for two weeks, we can tell there is less dust and our nose drip has stopped. Our house smells fresh and odor-less! We are feeling that the reduction in mold spores is already benefitting our health in improved sleep and energy when arising each morning. We look forward to a healthier future thanks to AirDoctor!"
"I purchased the 3500i wifi version. However, this device does not connect to wifi. 2. 4ghz or otherwise. I have connected a bunch of other smart devices to my 2. 4ghz home wifi but the Airdoctor 3500i would not connect. The customer support is useless as well."
"We love our AirDoctor 3500. It's one of the best purchases we've ever made. The air in our space feels clean and soft like a pillow. Whenever we leave, we always look forward to returning home. We can sense the clean air immediately. It has also improved our sleep and we could feel the difference the first night. It's comforting to know that it has our back! Thank you AirDoctor."
"This unit has made a huge difference! Odors, fumes, allergies, dust… it improves the air quality just as described. It also really helps to use it while sleeping. It is an investment but I really worthwhile one. Very happy that I made the decision to purchase this unit."
"With the unfortunate Canadian Fires, which arrived on Long Island I was so pleased that the AirDoctor was on sale. I immediately purchased the AirDoctor 3500 and I am VERY pleased at its performance. It is comforting to know that the air in our home is being cleaned and removing any dangerous bacteria/viruses and chemical carcinogens. There is no question, I am now on a mission to purchase more air purifiers for the rest of the house. It's a great machine and well worth the money to protect your family from harm!"
"We use our AirDoctor 3500 in our living room, which is a mid-sized room that is largely closed off from other living spaces. I use this space for music listening and watching DVDs or sports events on the large screen video system. So, I spend a fair amount of time in this space and the air is noticeably freshened and purified by the AirDoctor 3500."
"Absolutely love this air doctor! It is so sensitive to the air quality! Use it nightly in all of our bedrooms at home and will be purchasing a bigger one at some point for our basement! Highly recommend this brand. Some people say the air filters are too expensive to replace however, i disagree. The air filters in mine last longer than they say they do! You get what you pay for. This is a company is highly stand behind. Everyone should have at least one in their home ;)"
"We are happy with our AirDoctor. It was blue when we set it up, but when we cooked last night and it got a little smoky, the fan revved up and it went to red/yellow until it got all cleaned up. We can only imagine what it would have been like when there was still a smoker and pets in the house!"
"I like the size, the high quality, the fact you can visibly see the gages on the unit at all times, its very quiet. Im very happy with this air purifier."
"This is my fourth Air Doctor 3500 and I love them! We have five dogs and I have COPD so clean air is imperative for me. The Air Doctors keep the air clean and are so easy to use! I have recommended them to several of my friends. This last one is a replacement for another brand that didn't work nearly as well and it was difficult to replace the filters."
Frequently Asked Questions
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.
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.
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.
AirDoctor 4000 & 1000: Replace UltraHEPA® and Carbon/VOC filters every 6 months.
All other AirDoctor units:
The indicator light on your AirDoctor will also light on when it’s time to replace your filter
– no more guesswork!
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.
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.
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.
It's that simple!
