Let’s clear the air. Blueair genuine filter for Blue Pure 211i Max air purifier. Blueair genuine Blue Pure F2MAX Replacement filter for 211i Max is designed for optimal performance; Not compatible with 211+ and 211+Auto.
Q: What does the RealTrack algorithm do?
A: The RealTrack algorithm calculates the filter lifetime based on actual usage and pollution levels, letting you know when to replace it within 9 months.
Q: What size particles can this filter remove?
A: This filter removes at least 99.97% of tiny airborne particles down to 0.1 microns in size.
Q: Which air purifier is this filter compatible with?
A: This filter is specifically designed for the Blue Pure 211i Max air purifier.
Q: How does the HEPASilent technology work?
A: HEPASilent technology combines mechanical and electrostatic filtration to deliver more clean air faster with less noise and energy compared to using HEPA filtration alone.
Q: What is the filter life of this product?
A: This air filter has a filter life of 9 months.
Q: How long does a filter normally last?
A: Thank you for your interest in Blueair! Blue Pure Max filters should be replaced between six and nine months. The filter indicator light on your air purifier display will turn red when it is time to change the filter based on your air quality. And if the air purifier is connected to the Blueair app, you can also see in the app the exact status of the filter lifetime and get push notification when it is time to change it.
Q: How often are you supposed to change your filters
A: Thank you for your question! Blue Pure Max filters should be replaced between six and nine months. The filter indicator light on your air purifier display will turn red when it is time to change the filter based on your air quality. And if the air purifier is connected to the Blueair app, you can also see in the app the exact status of the filter lifetime and get push notification when it is time to change it.
Q: What model numbers does this fit??
A: Thank you for your interest in Blueair! The F2MAX Replacement filter is compatible with the Blue Pure 211i Max air purifier.
Customers are satisfied with the F2MAX - 211i Max Filter, particularly its impact on air quality. Customers have reported a noticeable improvement in their home's air quality after using the filter, describing it as a great product for maintaining clean air.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

Let’s clear the air. Blueair genuine filter for Blue Pure 211i Max air purifier. Blueair genuine Blue Pure F2MAX Replacement filter for 211i Max is designed for optimal performance; Not compatible with 211+ and 211+Auto.

The Blue Pure 211i Max SmokeBlock Replacement Filter is the ultimate tool against wildfire season. Additional activated carbon removes 99.99% of wildfire smoke along with extra protection against other wildfire emissions such as toxic gasses, smog and odors while also eliminating harmful gaseous pollutants such as volatile organic compounds (VOCs). In addition, advanced polypropylene filter media removes particle pollutants down to 0.1 micron in size from your indoor air, such as pollen, dust, and pet dander. Using a 360-degree air intake and up to 4 times the filter surface area vs. the same models with only mechanical filtration (H13 filter), the Blue Pure 211i Max SmokeBlock filter lasts longer, on average 6 months. Subscribe & save up to 10% on auto-delivered filters when replacement is needed; We recommend replacing your filter about every 6 months depending on usage. ULTIMATE TOOL AGAINST WILDFIRE SEASON: 99.99% wildfire smoke removal based on removal testing of particles 0.4-0.7um in 60min in a 30m3 room. Performance may vary. Also tested on benzene, toluene, nitrogen oxide, sulfur dioxide. FILTERS BUILT TO LAST: Blueair models with HEPASilent's mechanical and electrostatic filtration produced higher CADR, lower noise, and had lower energy consumption vs. the same models with only mechanical filtration (H13 filter). *Tested on E.coli, Influenza A (H1N1), A.niger with a minimum reduction rate of 99.9% in 60min

Genuine Blueair replacement filter compatible with the Blue Pure 211+ and Blue Pure MAX models only. This filter is not compatible with the 211+ Auto model. If used with the Blue Pure 211+ Auto, the clean air delivery rate (CADR) will decline. The Combination Particle + Carbon filter protects against both gaseous and particulate contaminates. Advanced polypropylene filter media removes particle pollutants from your indoor air, such as pollen, dust, and pet dander. At the same time, a layer of activated carbon mesh traps light household odors from pets, cooking, smoke, and more. The 360-degree design allows the filter surface area to be over 20 square feet in size. Unlike look-a-likes, authentic Blueair replacement filters are designed to maintain premium performance over time and ensures your warranty remains intact. For optimal performance, replace the filter about once every six months when used 24 hours a day. The twist-and-change filter is easily removed and replaced and is recyclable at the end of its service life. Please check your local recycling facilities for availability.

Genuine Blueair replacement filter compatible with the Blue Pure 211+ Auto only. This filter is not compatible with the standard 211+ or MAX models. If used with the 211+ or MAX, the clean air delivery rate (CADR) will decline. The Combination Particle + Carbon filter protects against both gaseous and particulate contaminates. Advanced polypropylene filter media removes particle pollutants from your indoor air, such as pollen, dust, and pet dander. At the same time, a layer of activated carbon mesh traps light household odors from pets, cooking, smoke, and more. The 360-degree design allows the filter surface area to be over 20 square feet in size.
| Pros for Blueair - F2MAX - 211i Max Filter - White | |||
|---|---|---|---|
| Air Quality, Overall Performance | There were no pros for this product— | Ease of use, Air Quality, Fit, Filter Life, Noise Level | Air Quality, Ease of use, Overall Performance, Fit, Filter Replacement |
| Cons for Blueair - F2MAX - 211i Max Filter - White | |||
| There were no cons for this product— | There were no cons for this product— | Price | Price |