About Us

Daian Service

Daian Service has developed many unique products to make our customer’s spaces clean and pleasant.

In response to the many voices asking for a solution to the direct air coming out of A/C units, Daian Service developed the Air Wing, our signature product, which is used by more than a thousand companies in Japan and grows each year by three hundred more. We receive orders from Japanese and local companies in locations around the world, including Southeast Asia and the Middle East, for our products.

Daian Service will continue to always push forward in our efforts to develop new products and increase our presence as a leading company meeting the needs of the times.

Daian Service's office


Clean Air Products

Clean Air Products

Lease, sales and maintenance of air purifiers and A/C units for making commercial and residential spaces more pleasant and refreshing.
Primary customers: offices, stores, hospitals, individual homes

Dust Control

Dust Control

Providing rental services for cleaning equipment and water purifiers for a beautiful, pleasant environment.
Primary customers: offices, stores, hospitals, schools, individual homes

General services

General services

Sales and provision of products, services and systems developed in-house and by other manufacturers
Primary customers: air conditioner and electrical companies, business and office suppliers, air conditioning maintenance companies, mail order companies, volume retailers, specialty stores, general retailers

New sales development

New sales development

Authorized representative development for Daian Service products, services and systems; expansion and development

Registered trademarks and patents

JOKIN AIR trademark registration

Registered trademark

Air Wing and JOKIN AIR patent



5-23-3 Shirokanedai, Minato-ku, Tokyo 141-0031
Telephone:+81 (03) 5496-4811 Fax :+81 (03) 5496-1797

  • • From Fudo-mae Station on the Tokyu Meguro Line: exit on the Kogyokusha school side, three minutes on foot
  • • JR Gotanda Station: exit on the west, 15 minutes on foot
  • • Gotanda Station on the Toei Asakusa subway line: exit from A2, 15 minutes on foot