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About us

Leading manufacturer
of Installation Accessories
for Air-conditioning
and Heatpump

Making town and life-styles
more functional and beautiful.

  • 45

    years
    in business

  • Turnover USD

    380+million

  • 3,000+items

  • 300+employees

Extreme weather events such as heat waves caused by global warming are becoming a global issue. In this context, Japanese-style air-conditioners are in the spotligt because of ;
(i) High air-conditioning efficiency (heating and cooling) with a heat pump system
(ii) A ductless system that controls temperature only where necessary.

Inaba Denko is No.1(*1) brand of air-conditioning installation accessories, with a market share of over 70% in Japan. It began as a pioneer(*2) developed “Pre-insulated Copper Tube for Air-conditioning”. Copper tube for refrigerant and Insulation were integrated into a single unit, greatly simplifying the installation process. Since then, as a manufacturer that develops and produces air-conditioning installation accessories and water supply and hot water piping-related components, the company has developed a wide range of products based on its accumulated technology and experience, responding to the needs of the times.

*1　Sales of air-conditioning installation accessories in 2022 (our self-research).
*2　As use for air-conditioning pipe in 1980(our self-research).

ProductProduct features

Function

Suitable for all application of sites
and makes quick installation.

Beauty

Stylish and attractive
building exteriors.

Inaba Denko supplies HVAC installation accessories engineered based on 45 years experiences as pioneer company on the filed and provides support for distributors and contractors over the world.

Our brands represent quality, precision and durability in building materials, with primary products including copper pipe, piping cover, DRAINAGEs and piping support systems.

Global Philosophy of Inaba Group

Our aim is to contribute creating greater prosperity and convenience in society through our commitment to energy saving and resource conservation, for the benefit of the environment, worldwide.

To realize our global philosophy, Inaba Denko serves as a point of contact for our partners and users over the world. We ensure hands-on business continuity on a long-term basis. Moving forward with our expertise, we strive for further achievements on product development, distribution system and customer relations.

Product Reliability

SLIMDUCT

Beautiful Finish
Stylish and classy trunking system, it adds beauty to the wall as an architectural feature with its slim light-weight profile.
Excellent Performance
Higher durability comparing with other brands distributing in the market, SLIMDUCT is tested UV resistance and Heat resistance.
Workability
More than 300 kinds of fittings with 77/100/140mm sizes makes Installation quick, easy and effective to configure any orientation.

Our Strength

  • 85 YEAR HISTORY

    Our initial business began in 1938 and an HVAC division was established in 1978 as Inaba Denko. Our company has maintained an independent operation and the largest market share in Japan since its founding.

  • GLOBAL OPERATIONS

    Our global network has expanded from Japan to Europe, North America, Oceania, Asia, the Middle East and Africa over the years. We have seen continued sales achievements worldwide.

  • ENSURED QUALITY

    Engineering process in design and development is centralized in Japan and customized at each manufacturing location. Quality is dually controlled by the headquarters and each manufacturing location.

  • STABILITY and CONTINUITY

    We maintain dispersive manufacturing strategy for stable supply and business continuity. That includes three main factories in Japan and one in Thailand as well as partner factories throughout Asia.

85-YEAR HISTORY of
INABA GROUP

  • 1938

    Initial business operations began as Inaba Denki
    Seisakusho

  • 1939

    Company was incorporated as Inaba Denki Sangyo Co., Ltd.

  • 1974

    Launched DH DRAINAGE series

  • 1975

    Launched PAIRCOIL lineset series

  • 1978

    Inaba Denko was established as a HVAC division of Inaba
    Denki Sangyo

  • 1979

    Launched Slimduct SD residential lineset cover series

  • 1987

    Introduced PLAROCK condenser riser series

  • 1988

    Launched Slimduct RD commercial lineset cover series

  • 1990

    Started exporting from Japan to overseas

  • 1991

    Introduced SuperLock horizontal pipe support series

  • 1992

    Established Nara Factory in Nara, Japan

  • 1993

    Inaba Denki Sangyo became a publicly traded company Established Ibaragi Factory in Ibaragi, Japan

  • 1994

    Launched DSH insulated DRAINAGE series

  • 1995

    Established Fukuoka Factory in Fukuoka, Japan

  • 1999

    Started exporting to Hawaii
    Completion of Grobal Headquarters

  • 2002

    Established a factory and started production in Malaysia Established Tokyo Logistics Center in Tokyo, Japan

  • 2003

    Launched LinesetSupport vertical lineset support series

  • 2004

    Established Osaka Logistics Center in Osaka, Japan

  • 2011

    Launched SLIMDUCT PD commercial lineset cover series

  • 2013

    Acquired Patlite Corporation and its subsidiaries

  • 2014

    Launched DSH-UP drain-up hose kit
    Established a factory and started production in Thailand

  • 2019

    Opened a sales office in Torrance, CA as Inaba Denko America