The Blueair Blue Max 3450i is best considered for rooms up to about 43 m² when planning by its CADR-based coverage rating. Blueair Japan also lists a larger figure of 79 m² under a different standard, but that is not the more conservative number to use when matching purifier capacity to a room. The model’s published specifications are promising on paper; the public evidence does not establish independent real-room performance for this exact unit.
Blueair Blue Max 3450i specifications at a glance
These figures come from Blueair Japan’s product information and store listing, accessed in 2026. They describe the Japanese-market model; verify the exact model suffix, electrical rating, price and warranty in your country.
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| Specification | Blueair Japan listing |
|---|---|
| Model / item | Blue Max 3450i / 110159 |
| CADR | 300 for tobacco smoke, dust and pollen, on an ANSI/AHAM AC-1 basis |
| Recommended floor area by CADR | Up to 43 m² (26 tatami mats) |
| Applicable floor area under JEMA JEM1467 | Up to 79 m² (48 tatami mats) |
| Airflow | 1.8–10.5 m³/min |
| Power / noise | 4–38 W / 23–50 dB(A); Night mode is listed at 23 dB(A) |
| Dimensions / weight | 318 × 318 × 534 mm / about 3.6 kg |
| Power supply / warranty | 100 V, 50/60 Hz / two years, as listed for Japan |
Sources: Blueair Japan product page and Blueair Japan Store model listing.
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1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problemsWhat room size is the Blue Max 3450i suited to?
Use 43 m² as the practical planning figure if you are comparing coverage by CADR. Blueair Japan’s 79 m² figure is calculated under JEMA JEM1467, a different rating basis; the two figures are not directly interchangeable. CHOICE’s Australian public listing also states a claimed room size of 43 m², although its other listed specifications and prices are Australia-specific.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Blueair Japan lists CADR of 300 for smoke, dust and pollen, but these are manufacturer-published specifications, not measurements reproduced for this review. If your room is larger than 43 m², has an open plan, or you need substantial cleaning with doors open, do not assume the 79 m² JEMA figure provides the same CADR-based coverage.
For the Japanese market, Blueair lists the purifier at ¥37,400 including tax. Confirm current price, stock and destination-market model details before buying: Blue Max 3450i at Blueair Japan Store.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
How strong is the 99.97% filtration claim?
Blueair says the filter media captured at least 99.97% of 0.1–1 μm potassium-chloride particles in a test conducted by RISE Research Institutes of Sweden AB under EN 1822-5:2009. That is a filter-media result, not proof that the purifier removes 99.97% of particles throughout a room or achieves that result in a particular home.
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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Blueair makes the distinction explicitly: “This is the filter’s removal performance. It differs from removal performance for the entire room.” Room results depend on factors such as room size, airflow, placement and operating speed. The claim should not be read as a whole-room virus-removal rate. Blueair’s product page provides the company’s qualification and test description.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Controls, sensing and noise
The Japanese specification lists automatic fan-speed adjustment, multiple fan speeds, Night mode, a status light and a PM2.5-sized particle sensor. It does not list an odor sensor, so automatic adjustment should not be understood as direct detection of smells. Blueair publishes noise of 23–50 dB(A), with 23 dB(A) for Night mode; those are product specifications, not independent controlled-test findings.
Power consumption is listed as 4–38 W. Blueair Japan also estimates roughly ¥3 per day in Night mode using an electricity-price assumption of ¥31/kWh, identified on the page as revised in July 2022. That is a mode- and tariff-specific calculation, not a general estimate of daily cost at higher fan speeds or under current local electricity rates.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Replacement filter and ownership cost
The model-specific main consumable is the Blue Max 3450i Particle + Carbon Filter. Blueair Japan lists it at ¥8,250 and estimates up to about nine months of use at 24 hours per day; actual replacement timing depends on use and environment. The unit has a filter indicator. Check that a replacement explicitly names the 3450i rather than assuming another Blueair filter fits.
Costs differ by market. CHOICE’s Australian public listing gives A$88 per replacement filter and estimates A$110 per year for filters. These Australian figures should not be mixed with the Japanese store prices, and both price and availability may change.
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
CHOICE’s public listing also reports A$429 for the purifier and a claimed dust CADR of 510 m³/h. Its member-only expert rating and test results are not visible publicly, so the listing cannot support a favorable or unfavorable independent-test verdict. See CHOICE’s public Blueair Blue Max 3450i listing.
Optional washable pre-filter
Blueair sells a washable fabric pre-filter specifically for the 3450i in several color variants. It is an exterior accessory that can be washed when dirty, not a required upgrade or a substitute for the model’s main Particle + Carbon filter. See the 3450i washable pre-filter listing.
What independent evidence is publicly available?
CHOICE has a public exact-model listing, but its expert rating, pros and cons, and test results are restricted to members. The public page identifies its reviews and testing organization but does not disclose enough result detail to assess the 3450i’s independently measured performance. The public information reviewed here therefore does not establish this model’s real-room particle-clearance rate, odor performance or noise under controlled independent testing.
Quick Recap
Who should consider the Blue Max 3450i?
- A plausible fit: buyers whose room is within the 43 m² CADR-based recommendation and who can source the correct local-market model and replacement filter.
- Check carefully first: anyone relying on the larger 79 m² figure, expecting odor sensing, or needing independently verified room-level performance data.
- Compare before buying: match CADR-based coverage, noise at the speed you expect to use, local purchase price, replacement-filter cost and interval, controls and sensing, warranty, and electrical compatibility. Do not compare the 79 m² JEMA rating directly with another purifier’s CADR-based area rating.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
