ComfortPure™️ 3-in-1 T20i Replacement Filter
$89.99
ComfortPure™️ 3-in-1 T20i Replacement Filter

ComfortPure™️ 3-in-1 T20i Replacement Filter

Compatible with the ComfortPure™ 3-in-1 T20i Air Purifier
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$89.99
Blueair Inside of Blueair Blue Pure Max Air Purifier
Only compatible with T20i

To check if you have a ComfortPure™ 3-in-1 T20i air purifier, look for handles on the sides of your unit.


If the handle is on the back, this is not the correct filter for your model.

Blueair Person using Blueair app on iPhone
Up to 9 months filter lifetime

The filter indicator on the interface of your air purifier and in the Blueair app will notify you when it is time to replace your filter.


Replacing filters regularly ensures optimal airflow, maintaining efficient air cleaning performance.


*Filter ships flat

Blueair Blueair genuine filter
Genuine Blueair replacement filter

Protect your air purifier from damage caused by unofficial filters.

Blueair null
  • Recommended filter change
    6 months (4,380 hours) when used 24 hours a day
  • Number of filters
    1
Blue Pure 311i Max
What air purifier is this filter compatible with?

This filter is compatible only with the Blue Pure Max 311i air purifier.

I've replaced my filters, now how do I reset the filter replacement indicator?​

Press and hold down the LED button for 10 seconds to reset the replacement filter indicator. ​​


How often should I replace the filter on my Blue Pure Max air purifier?

Quick cleaning: Vacuum the fabric pre-filter every time you do a big cleaning at home or when you see dust building up. Vacuum the exterior of the fabric with a soft brush attachment.


Deep cleaning: Wash the fabric pre-filter every time you replace the Particle & Carbon filter, approximately every 6 months. Wash the fabric pre-filter in a washing machine according to the pre-filter’s label. Hang to dry. 

Regular maintenance of your air purifier will help preserving optimal performance.

A flat shipping rate of $25.00 will be charged on filter shipments to Alaska and Hawaii. Additional charges may apply for shipments over 30 lbs.