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Description
xElevate your indoor air defense with AllergenBlock
Upgrade your Blue Pure 311i+ Max purifier with the Blue Pure 311i+ Max AllergenBlock replacement filter. Designed to work with the 311i+ Max series, this genuine filter is built to reinforce the purifier’s performance by targeting common in‑home irritants. The AllergenBlock layer is formulated to reduce the allergen properties of pollen, dust, and pet dander, helping to lower the perceived irritants in the spaces where you live, work, and relax.
Across the filtration stages, the AllergenBlock layer sits at the core of four filtration layers. In addition to diminishing allergen properties, a carbon layer helps curb light household odors, contributing to a fresher-feeling room ambiance. When paired with the Blue Pure 311i+ Max purifier, it’s designed to integrate smoothly and maintain consistent airflow for daily use.
Key benefits at a glance
- AllergenBlock defense layer neutralizes over 90% of allergen properties such as pollen, dust, and pet dander (based on ELISA testing).
- Four-layer filtration plus a carbon stage target a range of irritants and help reduce household odors for a more comfortable space.
- Designed for compatibility with the Blue Pure 311i+ Max air purifier, ensuring a cohesive system and easy maintenance.
- Automated filter replacement option with auto-delivery, offering convenience and cost savings over time.
- Replacement cadence is about every six months with 24/7 use to sustain airflow and filter performance.
What to expect in your space
Imagine a room where seasonal sneezes, itchy eyes, and stuffy feelings are less pronounced. With regular filter use, you may notice a steadier, more comfortable air feel in bedrooms, home offices, and living areas—especially during pollen spikes or dusty days.
Specs and compatibility
Product dimensions: 17.7 x 13.4 x 3.7 inches. This replacement is engineered for the Blue Pure 311i+ Max line and is compatible with the 311i+ Max purifier series for simple swaps and ongoing performance.
- Part compatibility: Blue Pure 311i+ Max series
- Packaging: Genuine Blueair replacement filter
FAQ
Q: What is AllergenBlock and how does it help in the Blue Pure 311i+ Max?
A: AllergenBlock is a defense layer in the filter that helps reduce exposure to pollen, dust, and pet dander.
Q: Will this filter fit my Blue Pure 311i+ Max purifier?
A: Yes, it is designed for optimal compatibility with the Blue Pure 311i+ Max series.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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