Frequently Asked Questions (FAQ)

How does this model differ from the Blue 411?

The 411 model has many similar features, but the 211 is recommended for a larger room size of up to 50 m².

I've replaced my filters, now how do I reset the filter replacement indicator?

Press and hold down the LED button for 10 seconds to reset the replacement filter indicator. ⚙️

How do I register for warranty?

To extend the Limited Warranty from one year, simply complete the product registration form within 60 days of purchase or register through the Blueair mobile app. ?

How should I clean the fabric pre-filter?

Vacuum the exterior of the fabric pre-filter to remove dust as often as you'd like. When the pre-filter requires a deeper clean, it can be washed on a gentle, low temperature cycle in the washing machine. ?

Why is my LED yellow?

The LED indicator will turn yellow after 5 months of operation to warn that it's almost time to change the filter. When the indicator light turns red (one month later), it's time to change the main filter. ?

	Blueair Air Purifier and Filter Compatibility Guide Discover the compatibility details for Blueair Blue Pure 211 and 211+ air purifiers and their replacement filters. This guide clarifies differences in design, filter types, and conversion options for various models including ASINs B073WJL99W, B01MY5ASTR, B073SKH39W, and B00ZSNZ1YY.
	Blue Pure 211+ Auto Air Purifier User Manual Comprehensive user manual for the Blueair Blue Pure 211+ Auto air purifier (model 3631101000). Learn about its HEPASilent™ technology, automatic air quality control, filter maintenance, and safety instructions for optimal indoor air purification.
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	Blueair Blue Pure 211+ Auto Air Purifier User Manual Discover the Blueair Blue Pure 211+ Auto User Manual, your comprehensive guide to operating and maintaining this advanced air purifier. Learn about its HEPASilent™ technology, automatic airflow control, filter replacement, and essential safety instructions for optimal indoor air quality. Includes specifications and troubleshooting tips.
	Blue Pure 211+ Auto Air Purifier User Manual Comprehensive user manual for the Blueair Blue Pure 211+ Auto air purifier, model 3631101000, covering setup, operation, filter maintenance, safety instructions, and technical specifications for optimal indoor air quality.
	Blueair Blue Pure 211+ Auto Air Purifier User Manual Comprehensive user manual for the Blueair Blue Pure 211+ Auto air purifier, detailing setup, operation, filter maintenance, safety instructions, and technical specifications.
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