Blueair Classic 605 Discontinued — The Blue Pure 211i Max Is Its Successor

Update (April 2026): The Blueair Classic 605 has been discontinued. Blueair's current large-room offering is the Blue Pure 211i Max, which replaces the 605 in the lineup. This review has been rewritten to cover the 211i Max as the successor and explain what buyers gain — and lose — in the transition.

What Happened to the Classic 605?

The Blueair Classic 605 was the company's flagship large-room purifier for years — a 775 sq. ft. powerhouse with a 500 CADR that no consumer purifier could match. It was also $599.99 and built like a steel tank. Blueair has retired the Classic line and replaced it with the Blue Pure i-series, which takes a fundamentally different approach: smarter technology, lighter construction, and dramatically lower pricing.

The Blue Pure 211i Max is the 605's direct successor. It does not match the 605's raw CADR, but it does not need to — the 211i Max uses Blueair's updated HEPASilent smart technology to deliver excellent large-room coverage at a fraction of the cost and noise.

Blue Pure 211i Max: What You Get

The 211i Max covers 674 sq. ft. with a CADR of 410 — roughly 18% lower than the Classic 605's 500. In practice, the difference is less dramatic than the numbers suggest. A 410 CADR still delivers over 4 air changes per hour in a 600 sq. ft. room, which exceeds the EPA's recommended minimum for effective air cleaning. For the vast majority of large living spaces, 410 CADR is more than sufficient.

Where the 211i Max genuinely surpasses the 605:

• Price: $244.99 vs $599.99 — less than half the cost
• Noise: 23 dB on low vs 32 dB — a significant gap that makes the 211i Max essentially inaudible at its quietest setting
• Smart features: Built-in HEPASilent smart technology with app connectivity, auto mode, and air quality monitoring — all features that cost extra on the Classic 605
• Filter life: 9 months vs 6 months — 50% longer between replacements, reducing ongoing costs further

Air Cleaning Performance

Blueair's HEPASilent technology remains at the core. Incoming particles receive an electrostatic charge before hitting the filter media, allowing thinner filter material to capture ultrafine particles with less air resistance. The result is high airflow at lower fan speeds — and lower noise.

The 211i Max handles typical large-room scenarios — cooking smoke drifting through an open floor plan, seasonal allergies, pet dander in a living room — with ease. For extreme scenarios like wildfire smoke where every CFM matters, the 90 CADR gap could be noticeable. But those situations are occasional, and the $355 savings buys a lot of replacement filters.

Noise Levels

This is where the generational improvement is most obvious. The Classic 605 started at 32 dB on its lowest setting — quiet, but audible in a silent room. The 211i Max starts at 23 dB, which is near the threshold of human hearing. For bedrooms and living rooms where the purifier runs overnight, this improvement alone justifies the upgrade.

On high speed, the 211i Max reaches 53 dB versus the 605's 62 dB. That 9 dB reduction means the 211i Max on maximum is roughly half as loud as the 605 was. You can run the 211i Max on high while watching TV without reaching for the remote.

Running Costs

• Energy: ~$3-5/month (more efficient motor than the Classic 605)
• Filter replacement: ~$50-60 every 9 months
• Annual filter cost: ~$70-80/year
• Total first-year cost: ~$315-325 (vs ~$760+ for the Classic 605)

The 211i Max is dramatically cheaper to own. The lower purchase price, longer filter life, and reduced energy consumption combine to make it one of the best value propositions in the large-room purifier market.

Pros and Cons

Blue Pure 211i Max vs. Levoit LV-H132

A large-room HEPASilent purifier versus a compact budget alternative:

Choose the Blue Pure 211i Max if you have a large open space over 400 sq. ft. and want strong CADR with whisper-quiet operation and smart features at $244.99. Choose the Levoit LV-H132 if you need an affordable compact purifier for a small bedroom or office — at $89.99 with True HEPA + carbon filtration and 129 sq. ft. coverage, it serves a completely different purpose.

The Verdict

After extensive research and analysis, here is the AirQualityNest editorial team's verdict.

The discontinuation of the Classic 605 is not a loss — it is a course correction. The 605 was a remarkable machine, but it was overbuilt and overpriced for what most buyers actually need. The Blue Pure 211i Max delivers 90% of the performance at 40% of the cost, with better noise levels and smarter features. For large rooms, open floor plans, and anyone who was considering the Classic 605, the 211i Max is the obvious choice in 2026.