Blue Pure 211+ Series AllergenBlock Filter

Blue Pure 211+ Series AllergenBlock Filter

Compatible with Blue Pure 211+ Auto • 211+
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Blueair Diagram showing which air purifier model should be used for the filter
Is this filter right for you?

This filter is compatible with the Blue Pure 211+ air purifier (non-auto) and the Blue Pure 211+ Auto. 

You can identify whether your air purifier is the standard 211+ non-auto version, if it has a button on the front of the air purifier. The 211+ Auto only has an LED light on the front.

Blueair Internal diagram showing what is being filtered
Extra protection against allergens

Blueair's AllergenBlock┬╣ technology reduces your exposure to pollen, pet dander and dust allergens, by neutralizing over 90%┬▓ of their sneeze-inducing properties once caught on the filter.

Blueair Main filter
Main filter

Captures airborne particles, including pollen, dust and pet dander allergens

Blueair AllergenBlock defense
AllergenBlock defense

Neutralizes┬▓ over 90% of the allergen properties that can trigger discomfort

Blueair Activated carbon
Activated carbon

Traps light household odors from pets, cooking and smoking

Blueair Person replacing Blueair filter
Dirty filters clean the air less effectively

We recommend replacing your air purifier filter about every 6 months when used 24 hours a day. 

Blueair AllergenBlock genuine Blueair filter
Genuine Blueair replacement filter

Protect your air purifier from damage caused by unofficial filters.

Blueair Image
Minimizes unhealthy allergens and germs*

The particle filter layer helps to minimize the airborne particles that can trigger allergy symptoms, including pollen, dust, mold spores*, pet dander, viruses*, bacteria*, and fine smoke particles.

Blueair Works 24/7, for six months straight
Works 24/7, for six months straight

To maintain optimal performance, we recommend changing your filter about once every 6-months when used 24 hours a day. Don't forget to save with our subscription program.

Blueair Keeps clean air flowing, resists clogging
Keeps clean air flowing, resists clogging

This filter's unique structure is designed to filter high volumes of air while trapping even the smallest particles. It maintains maximum airflow because it's engineered to resist clogging.

  • Filter Type
    Polypropylene fibers free of chemicals and binders with activated carbon mesh. Naturally anti-bacterial. Fiber shedding resistant.
  • Dimensions(HxWxD)
    12.1 x 20.7 x 3.1 in
  • Product weight
  • Recommended filter change
    6 months (4,380 hours)
  • Number of filters
What model air purifier is this filter compatible with?

This filter is compatible only with the Blue Pure 211+ Auto & Blue Pure 211+.

What is a filter subscription?

Purchasing a filter subscription saves you 15% on all future replacement filter orders + free shipping. At the time of purchase, the subscription will automatically schedule filter deliveries at the recommended six months. You can always adjust this timeframe from the 'My Account' section.


1 AllergenBlock refers to inanimate allergens (e.g., pollen, dust and pet dander)

2 deactivation testing of pollen (Cry J1), pet dander (Fel d1 & Can f1) and dust mite matter (Der f1) on the filter media in 60 mins.

3 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.