Skip to content

Free shipping · Ships same business day by 2pm ET

Free U.S. shipping on every order · Ships same business day when ordered by 2pm ET · Fit guaranteedDetails

Menu

support@thinkcrucial.com

Shipping, Fit & Returns

Free U.S. Shipping

Free U.S. shipping on every order. Ships the same business day when ordered by 2pm ET. Arrives in 2–5 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.

Your first order

10% OFFthe part that fits.

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

One code per customer, first order only. Unsubscribe anytime. Privacy policy

  • Free U.S. shipping
  • Fits or free return
  • Ships same day

5In stock · ships free

Replacement Filters for Air Doctor

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 (1)

Replacement filters made by Think Crucial to fit Air Doctor air purifiers: AD1000, AD2000, AD3000 and AD3500, AD5000 and AD5500. Brand names are used only to show compatibility.