- Carefully lay your unit on its side
- Check the product label located at the bottom of the air purifier
Once you know your model number, you can go to https://www.blueair.com/us/air-purifier-filters. Scroll down and select the model you have. All compatible filters and pre-filters will then be displayed. You can then click and order your filter as needed.
Alternatively, if you already know your serial number, you can go to https://www.blueair.com/us/contact-us-page.html and select “Help me find a replacement filter.” Enter your serial number, and compatible filters for your model will be shown to you.