AIRDOCTOR AD4000 Air Purifier. Perfect for Large Rooms, Basements Up to 2,776 ft2. Removes Allergens, Smoke, Dust, Mold, Pet Hair, Odors, Pollen. Hospital-Grade UltraHEPA & Premium Carbon Filtration
$799.00
Price: $799.00
(as of May 29, 2026 16:24:46 UTC – Details)
Product description
How to Change the AirDoctor Filter
Step 1
Make sure the unit is turned off, then gently pull the top of the filter cover toward you to remove it
Step 2
Slide the ORANGE filter lock lever to the right to unlock the filter plate
Step 3
Remove the old filter by lifting and pulling the tabs on top and bottom of the filter
Step 4
Insert your new filter by following the arrows, and aligning the channel on the bottom
Step 5
Once the filter is in place, slide the ORANGE lever to the left to lock the filter in place
Step 6
Align the upper part of the filter cover and snap it back into position
Product Dimensions : 19.7 x 32.3 x 19.7 inches; 20.3 Pounds
Item model number : AD4000
Date First Available : April 21, 2026
Manufacturer : AIRDOCTOR
ASIN : B0GY274753
Best Sellers Rank: #130,391 in Home & Kitchen (See Top 100 in Home & Kitchen) #188 in HEPA Filter Air Purifiers
Customer Reviews: 5.0 5.0 out of 5 stars (28) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
IDEAL FOR BEDROOMS, KITCHENS & LIVING ROOMS Ideal for large bedrooms, kitchens, and larger shared spaces. Rapidly cleans 630 ft2 in 15 minutes & up to 2,520 ft2 in 1 hour, delivering consistent purification where you sleep, work, and relax.
HOSPITAL-GRADE ULTRAHEPA FILTRATION AirDoctor AD3500 uses UltraHEPA filtration to capture 99.99% of airborne particles at 0.003 microns, 100x smaller than the HEPA standard. Removes allergens, dust, smoke, mold spores, pet dander, bacteria, and viruses.
PREMIUM ACTIVATED CARBON FILTER FOR GASES & ODORS Reduces toxic gases, odors, pet smells, cooking fumes, gas emissions, wildfire smoke, and VOCs. Made with activated carbon and potassium permanganate to absorb and break down gases and airborne chemicals.
REMOVES COMMON INDOOR AIRBORNE POLLUTANTS 3-stage filtration, backed by rigorous third-party testing, removes dust, allergens, smoke, mold spores, pet dander, pollen, and odors. Includes a Pre-Filter, Premium Activated Carbon filter, and UltraHEPA filter.
AUTO MODE WITH AIRDOCTOR HALO PM2.5 sensors monitor air in real time while the Halo displays color-coded quality levels. Auto Mode adjusts fan speed and activates Boost when needed. Includes timer, filter indicator, and 6 fan speeds.
PROVEN BY SCIENCE, BACKED BY TESTING Supported by independent third-party testing and built on a commitment to transparency, performance, and scientific validation.
QUIET OPERATION Designed for whisper-quiet performance so you can enjoy clean air without disruption. Runs quietly day and night while you sleep, work, or relax.
SUPPORT YOUR WELLNESS ROUTINE Cleaner air supports better sleep, breathing, and overall wellness. AirDoctor removes airborne irritants so you can breathe easier, sleep more comfortably, and wake up feeling refreshed.
GENUINE REPLACEMENT FILTERS For optimal performance, use genuine AirDoctor filters. All-in-one filter system. Replace every 6 months. UltraHEPA filters are made in Japan for durability, performance, and long-lasting reliability.
FSA AND HSA ELIGIBLE Eligible for FSA and HSA reimbursement so you can use pre-tax dollars toward cleaner air and better wellness.
