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換気扇 25cm

換気扇 25cm clears our launch bar: a $10.9M/yr market growing +20.9% this quarter with returns at 0.6%.

Flapen Score

58
Launch it

Top 45% of 4,191 DIY・工具・ガーデン niches · +1 vs the category median of 57

Market size 100Growth 51Conversion 31Competition 41Returns 97Price range 0Avg price 0Brand share 30Review moat 91Quality gap 85
This niche Category average · 4,191 niches

Is 換気扇 25cm profitable on Amazon?

According to Flapen's Amazon Japan niche tracking, 換気扇 25cm is a ¥10.9M/yr Amazon Japan market (74K searches/yr). The top 5 brands hold 87% of demand. Verdict: Launch it — 58/100.

換気扇 25cm: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Yes. Search demand moved +20.9% over the last 90 days and 2.5% of searches end in a purchase.

¥10.9M

revenue / yr

Units sold / yr3K
Search volume / yr+20.9%74K
Conversion rate2.5%
Avg price¥6022.54

Who owns the niche?

The top 5 brands hold 87% of demand, so 13% of the market is open.

13%

open market share

Brands · sellers11 · 82
Top-5 product click share61%
Open market13%
Avg brand age49 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.2★ — the gap to enter on.

0/100

page quality · 20 products

Sponsored placement60%
New entrants (1y)3· 3 succeeded
Avg rating4.2★
Avg reviews181

Top 換気扇 25cm products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products take 61% of clicks — established leaders, but buyers still shop beyond them.

¥0¥1.1M¥2.2M¥3.3M¥4.4M1101001K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

Brands

11 falling

Sellers

82

Top-5 brand share

87%

Top 20: 100%

Top-5 click share

61%

Top 20: 100%

Open market

10%

  • 高須産業(Takasu Sangyo)33%
  • パナソニック(Panasonic)24%
  • YUASA PRIMUS11%
  • オーム(OHM)10%
  • Umillion9%
  • 三菱電機(MITSUBISHI ELECTRIC)3%
  • Open — no brand owns it (5 brands, 10%)

換気扇 25cm demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume74KCVR2.5%Products20Brands11Top 5 Brands87%OOS Rate8.4%Rating4.2★Reviews181Avg BSR#154
2K2KHoliday '24Spike '25Prime Day '25Holiday '25Prime Day '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.5×

Top 換気扇 25cm search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

  • 換気扇 25cm67K/yr
  • 25cm 換気扇4K/yr
  • 25cm換気扇3K/yr

What reviews say buyers love and hate about 換気扇 25cm

What buyers mention most, as a share of all reviews.

What buyers love

89% of reviews
騒音レベル22%

静かです

組み立て/インストール21%

取り付けも簡単です

コストパフォーマンス21%

リーズナブル

総合品質9%

金属筐体ですが、正面から見える四角い面の仕上げは良く室内に設置するのに十分なクオリティです。

使用の容易さ5%

お手入れがしやすそうです。

What buyers complain about

79% of reviews
騒音レベル16%

ただちょっと風音は高めだね。

耐久性16%

毎日8時間使用2年半で壊れました。

サイズ全体14%

サイズを確認. 商品は良い. ですが、サイズを間違えて使えなかった。残念です

総合品質8%

ゴミです。

材料の品質6%

プラスチック

換気扇 25cm return rate & reasons

Why buyers send it back, as a share of all return requests.

0.6%

Return rate

0%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1サイズ全体
77%
2広告と実際の製品の違い
4%
3機能全体
4%
4互換性-全体
4%
5組み立て/インストール
4%

Common 換気扇 25cm questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores 換気扇 25cm 58/100 on Amazon Japan — Launch it. The niche generates ¥10.9M/yr across 20 tracked products. 3 of 3 products launched in the last 360 days are still selling. Search demand moved +20.9% over the last 90 days.
Search demand for 換気扇 25cm on Amazon Japan is steady year-round — the busiest month runs 1.5× the quietest.