211/211+

Keep Your Blue Pure 211 Running at Peak Performance

The genuine Blue Pure 211+ replacement filter is engineered for large room coverage with specialized filtration options for your specific air quality needs.

Product Options

Particle + Carbon Filter

Original formula. Removes allergens and traps light household odors. Subscribe & Save | 4.5/5 Stars

SmokeBlock Filter

2x activated carbon. Removes up to 99.99% of wildfire and indoor smoke. Subscribe & Save | Best for Smoke

AllergenBlock Filter

Extra allergen protection. Traps and neutralizes dust, pollen, and pet dander. Subscribe & Save | Best for Allergies

Pre-filter (Lunar Rock)

Washable fabric. Extends main filter life by capturing larger particles. Reusable | Accessory

Which Blue Pure 211+ Auto Filter Is Right for You?

Particle + Carbon Filter – Everyday Protection

• Removes dust, pollen, pet dander, and dust mite allergens
• Activated carbon traps light household odors
• Ideal for general air quality and everyday use
• Filter life: 6-9 months
• Best for: General dust and allergen control

SmokeBlock Filter – Maximum Smoke Elimination

• 2x more activated carbon than standard filter
• Removes up to 99.99% of wildfire and indoor smoke
• Superior heavy odor control
• Filter life: 6-9 months
• Best for: Smoke-prone areas and strong odors

AllergenBlock Filter – Allergy Relief

• Designed specifically for allergy sufferers
• Traps and neutralizes allergen particles
• Combines particle capture with odor control
• Perfect for homes with pets
• Best for: Allergies, asthma, and pet dander

Extend Filter Life with a Washable Pre-filter

The Blue Pure 211+ Pre-filter captures larger particles before they reach your main filter, extending filter life and improving overall performance.

• Extends main filter life by removing dust and debris
• Washable and reusable — rinse under water and air dry
• Lasts indefinitely — no replacement needed
• Easy maintenance — simple cleaning process
• Works with all filter types for enhanced performance

Subscribe & Save on Filter Replacements

How Subscribe & Save Works

1. Select your filter type – Particle + Carbon, SmokeBlock, or AllergenBlock
2. Choose delivery frequency – 3, 6, or 9-month intervals
3. Save on first replacement – discounted first-time pricing
4. Enjoy recurring savings – discounted future deliveries
5. Cancel anytime – no penalties for pausing or adjusting

Why Choose Genuine Blueair Filters?

• 410 CFM CADR Rating for large room coverage up to 635 sq ft
• Precision Engineered — proper seals prevent unfiltered air bypass
• Reliable Performance — backed by 1-year warranty (3-year extended available)
• Customer Proven — verified reviews from Blue Pure 211 users
• Warranty Protection — genuine filters maintain your air purifier warranty

FAQs

Q: Are these filters compatible with both 211i Max and 211+ Auto? 

A: Yes. The 211/211+ series filters works only with the 211+ Auto and the 211+. Verify your model on the label inside your air purifier.

Q: How do I choose between the three filter types? 

A: Choose Particle + Carbon for general use. Choose SmokeBlock for wildfire smoke or heavy cooking odors. Choose AllergenBlock for allergies, asthma, or pets.

Q: How often should I replace my filter? 

A: Filters last 6-9 months depending on air quality, usage time, and household conditions. Using a pre-filter can extend main filter life by capturing larger particles.

Q: What does the washable pre-filter do? 

A: It captures dust and hair before they reach your main filter, extending main filter life and improving overall performance. Simply rinse under water, washing machine and air dry when needed.

Q: How do I install a replacement filter? 

A: Installation takes under 2 minutes: (1) Unplug your unit, (2) Open the rear panel, (3) Lift out the old filter, (4) Insert the new filter securely, (5) Close the panel and plug back in.

Q: Why should I use genuine Blueair filters? 

A: Third-party filters may not seal properly, allowing unfiltered air to bypass. Genuine Blueair filters are tested to deliver 410 CFM CADR performance and protect your warranty.

Q: What is SmokeBlock best for? 

A: SmokeBlock with 2x activated carbon removes up to 99.99% of wildfire smoke and heavy indoor smoke. Ideal for wildfire-prone areas and strong cooking odors.

Q: Is AllergenBlock good for pet owners? 

A: Yes. AllergenBlock is designed to trap and neutralize pet dander allergens. Perfect for homes with pets or pet allergies.

Q: Are these filters FSA/HSA eligible? 

A: Yes! Blueair filters qualify as medical devices for FSA and HSA accounts. Use pre-tax healthcare dollars at checkout.