From the customer’s point of view, toward becoming Japan’s leading building services contractor.

Strong
in construction.

工事に、強い。

Electrical and mechanical work. New construction to large-scale renovation, homes to mixed-use facilities. Each person on the job site does the hands-on work, and we see every project through to the end.

All building services workElectrical workMechanical work
1997Founded in air conditioning and ventilation work
Pipe and electricalSpecial Construction Business Licenses
About 100,000 m²Air conditioning and smoke control for a large shopping center under a single contract
Tokyo and Nagoya2 locations
A new construction site with air conditioning ducts, piping and scaffolding under a steel-frame ceiling
CeilingThe finished ceiling
SectionInside the ceiling (typical layout diagram)
Rectangular ducts and cable trays hung inside the ceiling (actual job site)
PhotoAn actual job site
BuildingCross-section of a whole building (diagram)
  1. Behind the Ceiling

    Above this ceiling
    is our work too.

    この天井の上も、私たちの仕事です。

    Inside the ceiling, hidden once the building is finished, are the air conditioning, plumbing, electrical and fire safety systems.

  2. 01Air conditioning and ventilation

    Ducts

    Ducts carry air from the air conditioner to each room. They are supported inside the ceiling with hanging bolts and connected to the air outlets.

  3. 02Plumbing and air conditioning

    Piping

    Water supply and drainage piping, and refrigerant piping connected to the air conditioner. Drain pipes are sloped so that water flows.

  4. 03Electrical (main power lines, lighting, low-voltage systems)

    Wires and cable trays

    We bundle main power and low-voltage wiring on cable trays and deliver electricity to lighting and outlets.

  5. 04Fire and life safety

    Fire and life safety

    We also install fire and life safety systems, such as smoke control systems that vent smoke outside in a fire.

  6. PhotoAn actual job site

    The following are photos from actual job sites.

    Rectangular ducts and cable trays hung inside the ceiling. Once finished, they are hidden behind the ceiling panels.

  7. Whole BuildingA whole building

    All the systems for a whole building, through one point of contact.

    From the water tank in the basement to the outdoor units on the roof. We take on electrical and mechanical work as a single package, with Special Construction Business Licenses for pipe and electrical work.

A technician's hands measuring distribution board current with a clamp meter
Measure
A technician's hands spraying leak-test liquid on a pipe joint
Check
Inspecting an outdoor unit by measuring its supply voltage with a tester
Inspect

Works

All building services work

設備工事全般

We handle a building's building services work through a single point of contact. Our main areas are electrical work and mechanical work. You do not need a separate contractor for each type of work.

01 / Electrical

Electrical work

Main power lines, distribution boards, lighting, outlets and power supply for equipment. We do this work under our Special Construction Business License for electrical work.

  • Main power lines
  • Distribution boards
  • Lighting
  • Outlets
Featured projectNew large electronics store (Tachikawa, Tokyo) Details

02 / Mechanical

Mechanical work

We install piping and ductwork for air conditioning, plumbing, gas and more under our Special Construction Business License for pipe work.

  • Air conditioning
  • Ventilation and ductwork
  • Plumbing
  • Gas
  • Fire and life safety
Details

Range

Buildingtypes and sizes

建物の種類と規模

From whole-house air conditioning in homes to a shopping center with about 100,000 m² of floor area.

Building size

  1. HomesWhole-house air conditioning
  2. RetailAcross Japan
  3. Offices
  4. Hotels and hospitals
  5. CommercialAbout 100,000 m²

Types of work

  1. New construction
  2. Renovation
  3. Large-scale renovation
  4. Maintenance and replacement

Our Service

We build it,
and keep it running

つくって、動かし続ける

From proposing equipment to installation and maintenance after completion. One company takes responsibility for the entire life of your systems.

01

Equipment and materials sales

From electrical materials to air conditioning, sanitary and fire safety equipment, we propose products for building systems to suit the building and its use.

02

Permits and applications

We also handle the notifications and applications needed for construction, such as construction start notifications.

03

Installation

With our own tradespeople at the core, we work on site with partner contractors and complete everything from piping, ductwork and wiring to equipment installation.

04

Construction management

We manage schedule, quality and safety. With Special Construction Business Licenses for pipe and electrical work, we can also take on large projects as prime contractor.

05

Maintenance and repair

Regular inspection, cleaning, repair and replacement. We look after systems that must not stop.

For design, we work with the Group's design company. SOWA SERVICE focuses on building and maintaining.

Strength

A company that can say
“We can do it” to any
project.

From replacing air conditioners in stores to a single-contract project for a shopping center with about 100,000 m² of floor area and positive pressure systems for nuclear emergency off-site centers. Whatever the size or difficulty, we have built our experience one job site at a time.

We hold Special Construction Business Licenses for both pipe work and electrical work. We take on work that spans several trades without splitting it, and handle schedule coordination as one company.

200+projects
Projects recorded in our internal project log
About 20prefectures
Regions where we have worked, from Hokkaido to Fukuoka
About 100,000m²
Air conditioning and fire safety work for a large shopping center under a single contract
4facilities
Positive pressure systems for nuclear emergency off-site centers

People / Recruit

The people who work hard on site
are the face of this company.

現場で汗をかく人が、この会社の顔です。

First on the job site in the morning, the last to clean up and leave. Our work is supported by each of the tradespeople working on site. We are looking for site staff, foremen and construction managers (CM) to join us in building “Japan’s leading building services contractor.”

Air conditioner not working?
Water leaking?
Contact us first.

エアコンが効かない、水が漏れる。まずはご連絡ください。

We accept inquiries about inspection, repair and replacement. We also service systems installed by other companies.

Company

Company

会社概要

As the building services contractor of the SOWA Group, we operate from two locations: our Head Office in Minami-Aoyama, Tokyo, and our Nagoya Branch.

Company name
SOWA SERVICE Co., Ltd.
Founded
April 1997
Representative
Takashi Wago, President and Representative Director
Capital
50 million yen
Head Office
4-18-21 Minami-Aoyama, Minato-ku, Tokyo 107-0062
Nagoya Branch
1-3-37 Koyo, Chikusa-ku, Nagoya, Aichi 464-0061
Setagaya Warehouse
Taishido, Setagaya-ku, Tokyo 154-0004
Kugayama Dormitory
Kugayama, Suginami-ku, Tokyo 168-0082
Licenses
Special Construction Business License for plumbing/HVAC (pipe) work and electrical work (Governor of Aichi Prefecture, No. 107237)

SOWA Group

HD
SOWA HOLDINGS Co., Ltd.The Group's operating holding company
Visit site
SS
SOWA SERVICE Co., Ltd.Building services contracting
SEDS
SEDSBuilding services design
Visit site
KD
KD WORK Co., Ltd.Electrical work specialist
Visit site

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