311i+ Max Replacement Filter 2 Pack - HEPA + Carbon for Blue Pure 311i

In this review the 2 Pack 311i+ Max Replacement Filter is evaluated as a direct, cost-conscious replacement for owners of the Blue Pure 311i+ Max air purifier. It is aimed at people who need a straightforward HEPA and activated carbon combo that restores clean airflow and reduces common household odors without the brand premium. The single biggest reason to buy is the pairing of a HEPA medium that captures fine particles with a carbon layer for smells, making it a practical swap when the original part No. F3MAX+ needs replacing.

Key Features

• Fully compatible: Designed specifically for the Blue Pure 311i+ Max model so installation is typically seamless when you have the correct machine.
• HEPA filtration: The replacement filter uses a HEPA layer that targets fine airborne particles for improved indoor air quality and allergy relief.
• Activated carbon layer: The carbon element helps reduce household odors from cooking, pets and smoking for a fresher room.
• High efficiency: According to the product description the filter captures up to 99.97% of particles down to 0.3 microns for robust particulate removal.
• Two-pack value: The package contains two filters so you can replace once and have a spare on hand, lowering per-filter cost compared with single buys.
• Responsible material: The media includes FSC-certified paper, reflecting attention to sourced materials.

Who It's For

This replacement is best for owners of the Blue Pure 311i+ Max who want an economical, no-frills filter that matches the machine's requirements and restores HEPA plus carbon performance. It suits households with pets or allergy sufferers who need regular particulate control and some odor removal, and for anyone who prefers to keep a spare filter on hand.

It is not for owners of other Blue Pure 311i series models such as 311i Max, 311 Auto or 311 (non-auto); those units are not compatible. Buyers who require manufacturer-branded replacement parts or who need specialized filtration beyond HEPA plus carbon should look elsewhere.

Pros & Cons

Pros

• Fits the 311i+ Max and installs easily for most users according to owner feedback.
• Effective at removing dust, pollen and pet dander, improving perceived air quality in real rooms.
• Carbon layer addresses common household odors, complementing the particulate capture.
• Two-pack format delivers better value and ensures a ready replacement.

Cons

• Some buyers report receiving the wrong size, so you must confirm your model before ordering.
• Not compatible with other Blue Pure 311i series models, which limits use to the 311i+ Max only.

Specifications

Compatible model	Blue Pure 311i+ Max
Compare to part	F3MAX+
Filter media	HEPA plus activated carbon
Particle capture	Up to 99.97% at 0.3 microns
Package quantity	2 pack
Material note	FSC-certified paper media
Suggested replacement	Every 6-9 months depending on use

Our Verdict

The 2 Pack 311i+ Max Replacement Filter is a practical, affordable choice for anyone who owns the Blue Pure 311i+ Max and needs reliable HEPA and carbon performance without paying a brand premium. It delivers expected particulate removal and odor control, offers better value as a two-pack, and is good for routine household use so long as buyers confirm model compatibility before purchase.

Frequently Asked Questions

Will this fit my Blueair 311i model?
This filter fits the Blue Pure 311i+ Max only and is not compatible with Blue Pure 311i Max, 311 Auto, or 311 non-auto variants; confirm your exact model before ordering.

How often should I replace the filter?
The manufacturer suggests replacing the filter every 6 to 9 months depending on usage and environment for optimal performance.

Does it remove odors as well as particles?
Yes, the integrated activated carbon layer helps reduce common household odors from cooking, pets and smoking while the HEPA layer traps fine particles.