How long does a filter last? I bought mine 3 weeks ago and the red light already came on signaling it needs to be replaced.

Which red light? The red light for filter replacement is on top and shouldn't come for 6 months or more depending on how long and high the fan setting. Page 11 of manual. The red led on front side is red if polluted air is detected, then yellow then blue when air is clear. Page 10.

How much do the filters cost and where do I get them

As of 7/13/2022, Amazon sells replacement filters. Original is $21.

Do you have to use auto mode? To reduce noise we may want to use low setting at certain times, is that do-able?

You do not have to use these machines in Auto Mode. You can set to a manual speed if you would prefer to have controls over the fan speeds.

Consumer reports rates the 411 Auto very poorly for filtration at any speed. Does the manufacturer have a response to this?

I subscribe to consumer reports, but I am not always a fan of their review methodology. I think the problem here is that they compare all sizes of purifiers together, when the smaller units should be compared with other smaller units. Of course, a larger unit with higher CFM air flow and larger filter area will perform better than a smaller unit. Other review sites gave this purifier good ratings for its size. Some recommend just buying the larger unit, which is rated highly by Consumer Reports and running on a lower speed setting.

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Bedroom Air Purifier, Air Cleaner Dust Pet Dander Smoke Mold Pollen Bacteria Virus Allergen, Odor Removal, for Home Office Kitchen, Washable Pre Filter, HEPASilent, Medium Room, Blue 311 Auto

Product ID: 222499130

Details

Brand
BLUEAIR
Color
Taupe (No
Item Weight
5 Kilograms
Power Source
Corded
Product Dimensions
10.2"D x x

⚡45% faster cleaning

🌿99.99% allergen removal

🔇23 dB whisper-quiet

€ 1134.48

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Description

🌬️ Breathe Brilliance: Clean Air, Quiet Confidence

EFFORTLESS AUTO MODE - One-touch sensor adjusts fan speed to keep your air pristine without lifting a finger.
ALLERGEN ODOR ASSASSIN - Eliminates 99.99% of pollen, pet dander, smoke, and household odors down to 0.1 micron.
ENERGY SMART ECO FRIENDLY - Consumes only 3W on low—less than an LED bulb—saving your wallet and the planet.
SWIFT SILENT PURIFICATION - Cleans a 388 sqft room in just 12.5 minutes at a noise level quieter than a whisper.
AWARD WINNING SWEDISH DESIGN - Sleek, compact, and customizable pre-filters that elevate your space while purifying your air.

The BLUEAIR Bedroom Air Purifier 311 Auto uses patented HEPASilent™ technology combining mechanical and electrostatic filtration to deliver 45% faster air cleaning with 67% less noise than traditional HEPA filters. It automatically adjusts fan speed based on real-time air quality, cleans medium rooms (388 sqft) in 12.5 minutes, and removes 99.99% of allergens, smoke, pet dander, and odors down to 0.1 micron. Energy Star certified and whisper-quiet at 23 dB, it’s an award-winning, eco-friendly solution designed for modern homes and offices.

Specifications

ASIN	B08F13L1CH
ASIN	B08F13L1CH
Best Sellers Rank	#5,586 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #25 in HEPA Filter Air Purifiers
Brand Name	BLUEAIR
Color	Taupe (No Wifi)
Contaminant Filtration Capability	True
Control Method	Touch
Controller Type	Button Control
Customer Reviews	4.6 4.6 out of 5 stars (3,136)
Date First Available	August 25, 2020
Filter Class	HEPA + Carbon
Filter Type	Pre-Filter
Floor Area	388 Square Feet
Global Trade Identification Number	00689122013695
Included Components	Blue Pure 311 Auto Purifier, Washable Pre-filter in Arctic Trail
Item Dimensions D x W x H	10.2"D x 10.2"W x 20.5"H
Item Type Name	Air Purifier
Item Weight	5 Kilograms
Item model number	3431101000
Manufacturer	Blueair
Manufacturer	Blueair
Model Number	3431101000
Noise Level	23 Decibels
Part Number	311PACF105529
Particle Retention Size	0.1 Micron
Power Source	Corded Electric
Product Dimensions	4.02 x 8.07 x 4.02 inches; 11.02 Pounds
Special Features	Manual
Specification Met	Energy Star Certified
UPC	689122013695 689122019635
Unit Count	1.0 Count
Wattage	3 watts

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€ 1134.48

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

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