【Ouchi ni Pro】Survey on the Moment People Notice Air Conditioner Dirt

Survey Summary

The most common moment people notice air conditioner dirt is when they detect an unpleasant odor (60%), followed by reduced airflow and visible signs of dirt.

Regarding odors, most people notice them after the unit has been running for a while, though many also detect smells immediately upon turning the power on.

The most frequent time people notice air conditioner dirt is at the beginning of the usage season (62%). Awareness continues throughout the season as usage increases.

After noticing dirt, most people wait about one month before cleaning or scheduling professional cleaning, though many take action within one week.

Overview of the Survey on the Moment People Notice Air Conditioner Dirt

Ouchi ni Pro conducted an original survey titled 'Survey on the Moment People Notice Air Conditioner Dirt' to provide more useful information for those concerned about air conditioner cleaning. The survey details are as follows:

Survey Purpose

To understand the moment people notice air conditioner dirt

Survey Tool Used

CrowdWorks

Number of Respondents

100 people (Male: 47, Female: 51, No response: 2)

Age Groups of Respondents

Teens: 0, 20s: 6, 30s: 32, 40s: 38, 50s: 17, 60+: 7

Survey Method

Internet research

Survey Period

July 2026

Survey Region

Japan

The full survey results are also available on this page:

[Original Survey] Survey on the Moment People Notice Air Conditioner Dirt | Ouchi ni Pro

What prompted you to notice dirt in your air conditioner?

- Noticed an unpleasant odor: 60 - Reduced airflow: 19 - Noticed by appearance (e.g., filter): 17 - Change in operating sound: 3 - Pointed out by others (family/guests): 1

At what timing did you notice the odor from the air conditioner's airflow?

- Immediately after turning on the power: 35 - After running for a while: 49 - When changing the airflow direction: 3 - Never noticed any odor: 13

When during the air conditioner usage season do you most often notice dirt?

- At the beginning of the season: 62 - Mid-season (period of high usage): 23 - Before storing at the end of the season: 5 - Regardless of season: 10

Have you ever actually looked into the air conditioner's outlet to check for dirt?

- Check regularly: 11 - Check when concerned: 65 - Check occasionally: 23 - Never checked: 1

How long after noticing dirt did you actually clean or request cleaning?

- Within one week: 26 - Within one month: 41 - Several months to about half a year: 12 - Have not done anything yet: 21

What method do you think would be the clearest way to notice air conditioner dirt in the future?

- Notification via app or sensor: 33 - Reminder from service provider for regular inspection: 20 - Visual indicator showing filter color or condition: 41 - Don't think it's necessary: 6

About Ouchi ni Pro

'Ouchi ni Pro' is a comparison and booking website that allows users to safely and confidently select home-related services from trusted professional providers.

We offer a wide range of daily-life services such as air conditioner cleaning, kitchen/bathroom cleaning, house cleaning, and estate clearance. From over 4,000 registered service providers nationwide, users can efficiently find the right provider based on service area, price range, service details, and more than 20,000 user reviews.

Review information reflects actual user evaluations and feedback, allowing even first-time users to confidently consider our services.

We are currently running a review submission campaign, offering a digital gift worth up to 1,000 yen to participants. Ouchi ni Pro supports the creation of more comfortable living environments by helping users choose reliable and satisfactory service providers.

Service Areas

Hokkaido / Aomori Prefecture / Iwate Prefecture / Miyagi Prefecture / Akita Prefecture / Yamagata Prefecture / Fukushima Prefecture / Ibaraki Prefecture / Tochigi Prefecture / Gunma Prefecture / Saitama Prefecture / Chiba Prefecture / Tokyo / Kanagawa Prefecture / Niigata Prefecture / Toyama Prefecture / Ishikawa Prefecture / Fukui Prefecture / Yamanashi Prefecture / Nagano Prefecture / Gifu Prefecture / Shizuoka Prefecture / Aichi Prefecture / Mie Prefecture / Shiga Prefecture / Kyoto Prefecture / Osaka Prefecture / Hyogo Prefecture / Nara Prefecture / Wakayama Prefecture / Tottori Prefecture / Shimane Prefecture / Okayama Prefecture / Hiroshima Prefecture / Yamaguchi Prefecture / Tokushima Prefecture / Kagawa Prefecture / Ehime Prefecture / Kochi Prefecture / Fukuoka Prefecture / Saga Prefecture / Nagasaki Prefecture / Kumamoto Prefecture / Oita Prefecture / Miyazaki Prefecture / Kagoshima Prefecture / Okinawa Prefecture

About Zero Accel Co., Ltd.

Zero Accel Co., Ltd. operates its business with the mission of 'creating new value to enrich people's lives.' The company runs diverse businesses including pet food, cosmetics, shared offices, web media operations, and advertising services. Leveraging extensive experience in web marketing, the company is expanding its operations with the goal of going public.

Headquarters

Nittele Yotsuya Building 10F, 5-3-23 Kojimachi, Chiyoda-ku, Tokyo

Representative

CEO Hirotaka Oofuku

Established

April 2020

Business Activities

Media operations

Official website: https://zero-accel.co.jp/

Affiliated Companies

Zero Ad Co., Ltd.

Corporate site: https://zero-ad.co.jp/

Service site: https://zero-ads.jp/

BimoRa Co., Ltd.

Official site: https://bimora.co.jp/

Official EC: https://bimora.jp/

Wan-Plate Co., Ltd.

Official site: https://wan-plate.co.jp/

Official EC: https://wan-plate.jp/

The Building Co., Ltd.

Corporate site: https://the-building.co.jp/

Akasaka Station Front Store: https://the-building.co.jp/lp/daifuku/

Showa-dori Store: https://the-from.com/

Related Businesses

GLOW-NAVI (Glownavi)

https://glownavi.com/

Coco-Moola

https://cc-moola.com/

Zero Media

https://zero-medi.com