Description
xUpgrade your defenses with the Blueair Blue Pure 311 AllergenBlock Filter. This genuine replacement is designed for the 311 Auto air purifier, delivering enhanced protection against common indoor irritants like pollen, dust, and pet dander while keeping your room feeling fresh.
What makes AllergenBlock meaningful?
The AllergenBlock defense layer neutralizes over 90% of allergen properties, including sneeze-inducing pollen, dust, and pet dander. Paired with a four-layer filtration design and a carbon layer, it helps reduce light odors and supports a cleaner air experience.
Designed for the Blue Pure 311 Auto Series
Engineered for optimal performance with the 311 Auto air purifier, this Blueair filter is easy to install and works with the purifier’s multi-layer filtration. For around-the-clock use, the guide recommends replacing the filter every six months to maintain consistent results.
Two practical benefits you may notice
- AllergenBlock defense layer neutralizes over 90% of pollen, dust and pet dander.
- Four-layer filtration plus a carbon layer helps reduce light household odors.
Maintenance and savings
- Replacement every 6 months when used 24/7.
- Subscribe and save up to 10% on auto-delivered filters.
In real-life spaces—sunlit living rooms, pet-friendly lounges, or bedrooms during pollen season—this filter supports a steady, comfortable air rhythm. While individual experiences vary, many users notice a crisper feel and fewer visible particles when the purifier runs with a fresh filter.
FAQ
Q: What is AllergenBlock in the Blue Pure 311 replacement filter?
A: AllergenBlock is a defense layer that neutralizes over 90% of common allergens like pollen, dust, and pet dander.
Q: Is this replacement filter compatible with my Blue Pure 311 Auto air purifier?
A: Yes, it is designed as a genuine replacement for the 311 Auto series to support optimal performance.
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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