Air purifiers near Tokyo: where to buy + 5 quiet picks

Air purifier for a Tokyo flat: five models, 18 to 24 dB at their quietest
Sharp costs ¥842 a year to run; Daikin ¥1,629 on continuous quiet
Sharp and Panasonic also humidify; Blueair filters are an annual cost

The five

Best for	Where to get it	Score	Street price, incl. tax
Humidifying, affordable, and ¥842 a year to own — if you can’t decide	Sharp humidifying air purifier See price	79/100	¥28,428 (street price)
450 mm tall, and the only Streamer here	Daikin Streamer air purifier See price	70/100	¥53,680 (street price)
18 dB at about ¥0.08 an hour, and plenty of reviews	Blueair Blue Max 3250i See price	70/100	¥19,800 (street price)
18 dB, and every filter rated for ten years	Panasonic humidifying air purifier with nanoe X See price	62/100	¥46,200 (street price)
A small cylinder with a pollen programme, from 3.3 W	Levoit Core 300S See price	62/100	¥17,580 (street price)

These are sold on Rakuten Ichiba, which generally ships within Japan only, and they run on Japanese mains power (100V, 50/60Hz). They suit a home in Japan rather than a suitcase.

Rather see them in a shop first? Where to buy in Tokyo lists six big electronics stores by the main stations, with opening hours and how tax-free works now.

Humidifying, affordable, and ¥842 a year to own

Sharp humidifying air purifier

Rated to 23 mats; humidifying covers a 14-mat room
Electrostatic HEPA filter plus a deodorising filter
Sharp says the filters can be cleaned without removing the panel

See today’s price on Rakuten→

Why it made the five

20 dB and 3.1 W on quiet
An 8-mat room in twelve minutes; humidifying to 500 ml/h
Both filters rated for about ten years
The lowest annual running cost of the eight
Right for: Wanting humidifying too, without a large purchase price or ongoing costs.
Not for: Having little floor space — 399 mm wide and 613 mm tall.
Worth knowing: With humidifying on, the 8-mat clean takes 17 minutes and the rating drops to 15 mats.

Score breakdown — 79/100

Criterion	Stars	Why
Quality	★★★★☆	Twelve minutes for 8 mats earns four stars; rated to 23 mats
Value for money	★★★★☆	¥28,428 earns three, and a year at about ¥842 earns one back
Easy to live with	★★★☆☆	20 dB is neutral, ten-year filters earn a point, humidifying costs one
Trust	★★★★★	4.61 across 4,558 reviews
Only here	★★★★☆	The cheapest humidifying model here, with the lowest total of electricity and filters

450 mm tall, and the only Streamer here

Daikin Streamer air purifier

A compact 2026 model
Rated to 16 mats under the new 2026 standard

See today’s price on Rakuten→

Why it made the five

19 dB and 6 W on the quiet setting
450 mm tall, and an 8-mat room in twelve minutes
TAFU dust filter rated for about ten years
Published results on sixteen kinds of pollen allergen
Right for: Treating pollen seriously while avoiding filter replacement.
Not for: Keeping the purchase price down, or wanting humidifying too.
Worth knowing: At 6 W on quiet it is the thirstiest here — about ¥1,629 a year run continuously.

Score breakdown — 70/100

Criterion	Stars	Why
Quality	★★★★☆	Twelve minutes for 8 mats earns four stars; 16 mats under the 2026 rating
Value for money	★★☆☆☆	¥53,680 earns two, and a year at about ¥1,629 changes nothing
Easy to live with	★★★★☆	19 dB is neutral, the ten-year dust filter earns a point, 5.8 kg earns none
Trust	★★★★☆	4.67 across 913 Rakuten reviews
Only here	★★★★☆	The only Streamer model here, with published results on sixteen pollen allergens

18 dB at about ¥0.08 an hour, and plenty of reviews

Blueair Blue Max 3250i

Swedish-designed
Night mode also turns off the air-quality light

See today’s price on Rakuten→

Why it made the five

Night mode at 18 dB, with the lights off and the panel dimmed
An 8-mat room in about thirteen minutes; rated to 22 mats
3.4 kg, drawing air in through 360 degrees at the base
Wi-fi and an app showing air quality
Right for: Buying the machine cheaply and running it quietly in a bedroom.
Not for: Wanting to avoid filter costs.
Worth knowing: The dust filter is rated for about six to nine months of continuous use, so filters are an annual expense. Blueair publishes an hourly cost rather than a wattage.

Score breakdown — 70/100

Criterion	Stars	Why
Quality	★★★☆☆	About thirteen minutes for 8 mats earns three stars; rated to 22 mats
Value for money	★★★☆☆	¥19,800 earns four, but about ¥8,621 a year with filters costs one back
Easy to live with	★★★★☆	18 dB and 3.4 kg each earn a point; the six-to-nine-month filter costs one
Trust	★★★★★	4.64 across 1,990 reviews on three sites
Only here	★★★☆☆	A published hourly running cost and 360-degree intake, but nothing here is unique to it alone

18 dB, and every filter rated for ten years

Panasonic humidifying air purifier with nanoe X

Second only to Sharp’s flagship for quiet among the eight
Rated at 14 mats under the new standard, 25 under the old

See today’s price on Rakuten→

Why it made the five

18 dB and 5.0 W on quiet air cleaning
Nanoe X
Dust, deodorising and humidifying filters all rated for about ten years
An 8-mat room in about thirteen minutes
Right for: Wanting quiet and no filter costs at the same time.
Not for: Keeping the purchase price down.
Worth knowing: With humidifying on, quiet running becomes 25 dB and 9.0 W. The 2.3-litre tank lasts about 4.6 hours at full humidifying output.

Score breakdown — 62/100

Criterion	Stars	Why
Quality	★★★☆☆	About thirteen minutes for 8 mats earns three stars; 14 mats new rating, 25 old
Value for money	★★☆☆☆	¥46,200 earns two, and a year at about ¥1,358 changes nothing
Easy to live with	★★★★☆	18 dB and ten-year filters each earn a point; humidifying costs one
Trust	★★★☆☆	4.51 across 76 reviews on four sites
Only here	★★★★☆	The only nanoe X model here, and the only one whose humidifying wick is also rated for ten years

A small cylinder with a pollen programme, from 3.3 W

Levoit Core 300S

The logic of the pollen programme: pollen is stirred up rather than static
Rated to 20 mats; an 8-mat room in thirteen minutes
About ¥896 a year run continuously

See today’s price on Rakuten→

Why it made the five

A pollen programme alternating power every twenty minutes
22 cm across, 36 cm tall, 3.5 kg
App and smart-speaker control
3.3 W at minimum
Right for: A cheap, small machine for the pollen season, controlled by phone.
Not for: Wanting the quietest thing in the bedroom — 24 dB at minimum.
Worth knowing: Levoit gives the filter a life of roughly two years but recommends replacing it every six to twelve months. At 24 dB it is the loudest minimum of the eight.

Score breakdown — 62/100

Criterion	Stars	Why
Quality	★★★☆☆	Thirteen minutes for 8 mats earns three stars; rated to 20 mats
Value for money	★★★☆☆	¥17,580 earns four, but about ¥7,376 a year with filters costs one back
Easy to live with	★★☆☆☆	24 dB and the six-to-twelve-month filter each cost a point; 3.5 kg earns one
Trust	★★★★★	4.65 across 1,029 reviews on three sites
Only here	★★★☆☆	A pollen programme and smart-speaker control, though Daikin also has a pollen mode

Where to buy in Tokyo

Want to see air purifiers before you buy? These six big electronics stores are at or near Tokyo’s main stations. Hours, floors and services are as each store’s official page listed them on 5 November 2026; check again before a special trip.

Store	Station	Open	Worth knowing
Yodobashi Camera Multimedia Akiba	Akihabara (JR), 1 min walk	9:30–22:00 daily	5F: air purifiers, humidifiers Tax-free counter on 3F; the refund can be paid in cash on the spot 5F also has a section of appliances made for use abroad (rice cookers, kettles, irons)
Yodobashi Camera Shinjuku West Main Store	Shinjuku (JR), west exit	9:30–22:00 daily	Tax-free; the refund can be paid in cash at the store
Yodobashi Camera Multimedia Ikebukuro	Ikebukuro	9:30–22:00 daily	Tax-free; the refund can be paid in cash at the store
Bic Camera Yurakucho	Yurakucho (JR), Hibiya exit, 1 min walk	10:00–22:00, open every day	B1F: air purifiers, seasonal appliances Tax-free Airport delivery service
Bic Camera Shinjuku West Exit	Shinjuku, west exit (exit B16)	10:00–20:30 Mon–Sat, 10:00–20:00 Sun and holidays	5F: air purifiers Tax-free Airport delivery service
Yamada Denki LABI Shibuya	Shibuya, 5–10 min walk	10:00–22:00	Tax-free Airport delivery service

Tax-free shopping changed on 1 November 2026

Since 1 November 2026, tax-free shopping in Japan is a refund: you pay the full price including consumption tax, show your passport at the till, and the tax comes back after customs at the airport or port confirms you are taking the goods out of Japan.
Get that customs check within 90 days of buying, before you check in your bags, with every item from the receipt. The minimum spend is ¥5,000 before tax (Bic Camera’s rules).
Yodobashi’s Akiba, Shinjuku West, Ikebukuro and Ueno stores can pay the refund in cash at their tax-free counter. You register a credit card, which is charged back if the customs check is not completed.
Japanese appliances run on 100V. Bic Camera states that its free warranty does not cover use outside Japan.

Official sources — Yodobashi Camera Multimedia Akiba: store page, floor guide, tax-free counter · Yodobashi Camera Shinjuku West Main Store: store page, cash refund notice · Yodobashi Camera Multimedia Ikebukuro: store page, cash refund notice · Bic Camera Yurakucho: store page, tax-free · Bic Camera Shinjuku West Exit: store page · Yamada Denki LABI Shibuya: store page, tax-free

Know before you buy

The year of ownership ranges from about ¥842 to ¥8,621, and the difference is filters, not electricity. Four of these have filters rated for about ten years; two need replacing every six to twelve months.
Japanese cedar and cypress pollen is the reason most people here buy one. Two models publish specific pollen programmes.
The room-size rating changed in April 2026, from ‘how fast it cleans a room’ to ‘how well it keeps it clean’, so the new figures look smaller for the same machine — one model is 14 mats under the new rating and 23 under the old.
The comparable number is how long it takes to clean an 8-mat room: 12 to 13 minutes across these five.
A humidifying model saves you buying two machines, at the cost of filling a tank, cleaning a wick, and 7.5–8 kg of weight.
Running twenty-four hours a day, electricity alone is ¥543 to ¥1,629 a year — less than most people assume, and much less than the filters.

How we chose: theme, conditions, scoring

How we chose

Candidates: 61
Met every condition below: 18
Kept: five, each the best at something different

Conditions (all of them, not most of them)

Rated for 8–25 mats of air cleaning (16 mats where only the 2026 rating is published, since it reads lower)
A published noise figure of 25 dB or less on the quietest mode
The power draw, or hourly running cost, on that mode is published
The filter replacement interval is published
Buyable on Rakuten Ichiba

Scoring

Five criteria, one to five stars each, weighted to one hundred points. Every star says where the number came from.

Quality25 pts
- Set by the published time to clean an 8-mat room: 10 minutes or less five stars, 11–12 four, 13–14 three, 15–17 two, 18 or more one. Where that figure is not published we use room size instead.
Value for money25 pts
- The cheapest price on Rakuten Ichiba: under ¥15,000 five stars, under ¥25,000 four, under ¥40,000 three, under ¥55,000 two, above that one. Add a star if a year of electricity on the quietest mode plus filters comes to under ¥1,000, and subtract one if it exceeds ¥5,000.
Easy to live with20 pts
- Starts at three stars. Add one at 18 dB or less, subtract one at 23 dB or more. Add one for filters rated about ten years, subtract one for an interval under a year. Add one at 4 kg or less. Subtract one for a humidifying model, which adds a tank and a wick to clean.
Trust15 pts
- Review counts and averages on the Rakuten product page, colour variants combined, cross-checked against Amazon, Yahoo! Shopping and Kakaku.com.
Only here15 pts
- Starts at three stars. Add one or two where a figure or function belongs to this model alone among the eight, and where it bears on pollen, bedroom quiet or running cost.

What we dropped

Candidate	Verdict	Why
Iris Ohyama air purifier, 16 tatami	Runner-up (69/100)	The score is high enough, but its character overlaps with the five
Sharp Plasmacluster humidifying air purifier	Runner-up (57/100)	57 points, below the lowest of the five (62)
Sharp Plasmacluster air purifier	Runner-up (56/100)	56 points, below the lowest of the five (62)
Daikin MCK557A	Runner-up	16 mats under the new rating, twelve minutes for 8 mats, 20 dB and 500 ml/h humidifying — but the most expensive humidifying model here, and it duplicates the three we chose.
Sharp KI-UD50	Runner-up	Dehumidifies as well as humidifies, but at about 13 kg it is too large for a one-room flat.
Muji MJ-APR1	Runner-up	A wall-mountable compact at 22 dB and 2.1 W, but no 8-mat cleaning time is published, filters go annually, and it has eleven reviews.
Iris Ohyama AAP-S20C and others	Runner-up	The 10-mat and humidifying versions of the AAP-S30C, which they duplicate.
Blueair Blue Max 3250	Runner-up	The same machine as the 3250i without wi-fi and the air-quality light.
Levoit Core 300 / Core P350	Runner-up	The same cleaning performance, but a minimum draw of 14 W against the 300S’s 3.3.
Panasonic F-PX55D	Held back	25 mats on the old rating, twelve minutes for 8 mats, 19 dB, and slim enough to lie under a bed — but it is a pre-order for release in October 2026 with no reviews.
Daikin MCK505A and three others	Outside the theme	21–22 mats under the new rating, above our 16-mat limit for new-rating-only models.
Sharp KI-WX70 and seven others	Outside the theme	27 mats or more on the old rating — living-room machines.
Iris Ohyama AAP-T50A and three others	Outside the theme	31–34 dB even at their quietest.
Iris Ohyama AAP-S40A and AAP-SH40A	Outside the theme	21 dB on low, but no published filter replacement interval.
Levoit Core 200S and Core mini	Outside the theme	27 dB at their quietest.
Levoit Vital 100S and the Vital range	Outside the theme	The 100S is 25 dB but publishes no power draw; the 200S is rated for 33 mats.
Blueair Blue Mini Max and two others	Outside the theme	20–22 dB, but no published power draw or running cost.
Hitachi air purifiers	Outside the theme	Hitachi’s own site shows them as remaining stock only.

Questions visitors ask

Which is the cheapest?

The Levoit Core 300S, at about ¥17,580. The Blueair Blue Max 3250i is next at about ¥19,800. Prices are typical selling prices including tax and move often; the link on each one shows today’s price.

Where can I buy one in Tokyo?

All five are sold by Rakuten stores that deliver to any address in Japan, usually within a few days, and the links above go straight to them. If you would rather see the purifiers in person, the big electronics chains — Yodobashi Camera, Bic Camera and Yamada Denki — have branches next to the main stations, including Shinjuku, Akihabara, Yurakucho and Ikebukuro, and carry the major Japanese brands. Online prices are often lower than in the store, so it is worth checking both.

Which is quietest?

Sharp’s KI-WS50 at 17 dB on its quiet setting is the lowest published figure we found, though it did not make our five. Among these, Panasonic’s F-VXW55 and Blueair’s night mode at 18 dB. Levoit’s 24 dB is the loudest minimum here.

What does a year of ownership actually cost?

Electricity run continuously is between about ¥543 and ¥1,629. Filters are what separate them: the Sharp, Daikin and Panasonic have filters rated for about ten years, so a year costs ¥842 to ¥1,629 in total. Blueair’s filters go every six to nine months and Levoit’s every six to twelve, taking their annual totals to about ¥8,621 and ¥7,376. Over five years that is the whole argument.

What changed about the room-size ratings in 2026?

The test standard, JEM1467, moved from measuring how quickly a machine cleans a room once to how well it keeps a room clean. The same machine therefore gets a smaller number: Sharp’s KI-WS50 is 14 mats under the new rating and 23 under the old, Panasonic’s F-VXW55 is 14 and 25. When comparing, use ratings from the same standard, or use the time to clean an 8-mat room instead.

Humidifying model or air cleaning only?

If the dry winter bothers you too, one machine does both. The cost is filling a tank, cleaning a humidifying wick, and 7.5–8 kg of appliance instead of 3.4. If floor space and maintenance are what you are minimising, take the air-cleaning-only machines.

Does any of this actually help with hay fever?

Daikin publishes test results showing its Streamer renders the allergens of sixteen kinds of pollen harmless, and Levoit’s pollen programme varies fan speed on the basis that pollen gets stirred up rather than settling. Neither is a medical claim, and neither replaces keeping windows shut on a bad day in March.

Can I take one home with me?

They run on 100 V Japanese mains, so they are for a home here. If you live in Japan and suffer in the cedar season, a purifier with ten-year filters is one of the better appliance purchases available; if you are visiting, it is not a souvenir.

Changes

2026-10-25　First published. Scored from 61 candidates.