A Blue Pure number is not enough to select a filter. Blue Pure 211+ Auto and 211i Max use separate references, and Blue Pure 311 Auto, 311i Max and 311i+ Max are three distinct matches.
Copy the complete model from the purifier label before using the table. The plus sign in 311i+ Max changes F3MAX to F3MAX+; it is not decorative product wording.
Blue Pure generation map
Use the row that repeats the complete model on your label. A similar number in another generation is not a substitute.
| Purifier model | Published reference | Decision point |
|---|---|---|
| Blue Pure 211+ Auto | F211PACF106236 | Keep + Auto; not 211i Max. |
| Blue Pure 211i Max | F2MAX | Keep i Max; not 211+ Auto. |
| Blue Pure 311 Auto | F311PACF105618 | Earlier Auto family; not either Max record. |
| Blue Pure 311i Max | F3MAX / 110037 | No plus sign. |
| Blue Pure 311i+ Max | F3MAX+ / 110038 | The plus sign selects the + reference. |
| Blue Pure 411i Max / 411a Max | F4MAX / 110036 | Both documented 411 Max variants share this record. |
| Blue Pure 511 | 110009 | The manufacturer/Amazon material excludes 511i Max. |
| Blue Pure 511i Max | F5MAX / 111179 | Separate Max-generation product. |
Treat specialist media as another product choice
The model records retain the standard Particle + Carbon products. AllergenBlock, SmokeBlock and other specialist variants have separate listings; shared purifier fit does not make their media or part identity the same.
After an Amazon redirect, compare the complete reference and selected variant again. A result for the right model can still be a different media option or pack quantity.
Blue Pure Max: reset the filter timer, not the whole purifier
After changing a Blue Pure Max filter, hold the Fan Speed button for about 15 seconds, until the interface LEDs light and the filter indicator clears, then release. Reset after an early replacement too, even if its reminder is not yet red, so the filter-life calculation restarts.
A red front air-quality LED is a different signal from the filter reminder on the control panel. Clearing the filter timer does not clear a poor-air-quality indication. Blueair describes a factory reset as a separate power-button operation that also disconnects the app; it is not the normal filter-change reset. Keep these Max instructions separate from earlier Blue Pure Auto controls.
Filters in this guide
Sources
Sources
- Blueair official model-to-filter lookup tableChecked
- Blueair F3MAX replacement filter for 311i MaxChecked
- Blueair F3MAX+ replacement filter for 311i+ MaxChecked
- Blueair F5MAX replacement filter for 511i MaxChecked
- Blueair support: Blue Pure Max filter-light reset and front LED distinctionChecked
- Blueair support: Blue Pure Max factory reset consequencesChecked