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Free shipping · Arrives in 3–7 business days

Free U.S. shipping on every order · Ships in 1–3 business days · Fit guaranteedDetails

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Shipping, Fit & Returns

Free U.S. Shipping

Free U.S. shipping on every order. Ships in 1–3 business days. Arrives in 3–7 business days. Details here.

Fit Guarantee

Fit guaranteed. If it doesn't fit the model we list, we'll send you a prepaid return label within 30 days of delivery. Details here.

Easy 30-Day Returns

Changed your mind? Return it unused, in its original packaging, within 30 days of delivery. Return shipping is free. Cleaners are returnable unopened only.

Help Choosing the Right Part

Not sure which part fits your appliance? Email support@thinkcrucial.com with your model number and we'll reply within one business day.

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10% OFFthe part that fits.

Filters, bags and cleaners matched to your exact model. Drop your email and the code shows up right here.

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  • Free U.S. shipping
  • Fits or free return
  • 3–7 day delivery

23In stock · ships free

Air Purifier Filters

Built by Think Crucial to fit the original machines. Type the model number from your machine's label and we'll show the parts that fit.

Updates the list when you pick an option or press Enter.

Out of stock (14)

Replacement filters for the air purifier you already own, matched by model number. Most people land here for AirDoctor: each AirDoctor model takes its own set, and the table shows which one fits yours. We also make filters for Winix, Blueair, Shark, Whirlpool, Kenmore, Hunter, Honeywell, IKEA, Jaspr and MOOKA purifiers. Every filter here is aftermarket, made by Think Crucial. U.S. shipping is free, and orders arrive in 3–7 business days.

AirDoctor model Filter set Air Doctor's schedule
AD1000 AD1000 set: main, carbon gas trap and pre-filter Every 6 months
AD2000 AD2000 set: 1 main, 2 carbon pre-filters Main 12 months, carbon 6
AD3000, AD3500 5-piece set: 1 main, 2 carbon, 2 pre-filters, or the main filter alone Main 12 months, carbon 6
AD5000, AD5500 14-piece set: 2 main, 4 carbon, 8 pre-filters Main 12 months, carbon 6

The model number is on your purifier's rating label. Our AirDoctor filter guide explains what each layer does and how to swap them. Other purifiers we fit include the Winix HR950 and HR1000, Blueair Blue Pure 211+, Shark Air Purifier 6 and Whirlpool AP450 and AP510. If yours isn't here, email support@thinkcrucial.com with the model number and we'll reply within one business day.