大成設備（株）

Name

大成設備（株）

Legal name

大成設備株式会社

Website

https://taisei-setsubi.jp

Company type

Private

Founded year

1965

Operating status

Operating

Headcount range

1–10 employees

Ownership category

akta.pro rank

Product category

Building Equipment Construction Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220), Architectural, Engineering, and Related Services (5413)

SIC

Electrical Industrial Apparatus (3620)

akta.pro primary industry

HVAC & Industrial Ventilation (Chillers, AHUs, Exhaust, Filtration) (EUAEAFAE)

akta.pro secondary industry

Drywall, Partitions & Suspended Ceilings (IMAFANAG)

Keywords

• HVAC construction services
• Plumbing and sanitation equipment
• Electrical equipment installation
• Building equipment engineering
• Building renewal construction

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices11 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Construction Services: The company generates revenue primarily through construction services including air conditioning equipment, plumbing and sanitation equipment, electrical equipment, fire protection facilities, building construction, steel structure work, interior finishing work, electrical communication work, renewal construction, and sales/mediation/agency of building mechanical equipment. Revenue is project-based with completion-based billing (完成工事高).

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Taisei Setsubi Co., Ltd. is an integrated building equipment construction specialist (総合設備工事会社) that designs and constructs HVAC systems, plumbing and sanitation equipment, electrical systems, and interior finishing for new buildings and renewal projects. Operating as a wholly-owned subsidiary of Taisei Corporation within the Taisei Construction Group, the company delivers end-to-end building equipment services to government, commercial, healthcare, transportation, education, sports, hospitality, and logistics/industrial clients across Japan through its nationwide branch network.

Product overview

大成設備（株）is a comprehensive building equipment contractor specializing in four core service areas: air conditioning (HVAC), plumbing and sanitation, electrical equipment, and interior finishing work. The company operates under the Taisei Construction Group and offers integrated services including new construction, renovation/renewal projects, and specialized technical consulting services. The product portfolio includes building equipment construction as the primary offering, supplemented by renovation services for HVAC, plumbing, electrical and interior systems, energy-saving diagnosis services, deterioration diagnosis evaluation, and renewal ZEB (Zero Energy Building) technology solutions. The company positions itself as a one-stop service provider capable of handling all equipment-related renovation work without requiring coordination between separate contractors.

Differentiator

Problem solved

Functional benefit

Products and services

• Building Equipment Construction (建築設備工事) Comprehensive building equipment construction services covering four specialized fields: air conditioning (HVAC), plumbing and sanitation, electrical systems, and interior finishing work for new construction projects.
• Interior Finishing Work (内装工事) Interior finishing construction including renovations for stores, accommodations, kitchens, factories, bathhouses, and toilets as part of building equipment projects.
• Electrical Equipment (電気設備) Electrical equipment services including generator systems, power transformation, security systems, telecommunications, broadcasting, fire alarms, lightning protection, lighting, power distribution, and battery systems.
• Plumbing and Sanitation Equipment (給排水衛生設備) Plumbing and sanitation equipment including water supply, drainage, hot water systems, filtration, rainwater harvesting, sanitary fixtures, medical/special gases, fire protection, and kitchen equipment.
• Renewal Construction (リニューアル工事) Building renewal and renovation construction services for HVAC, plumbing, electrical, and interior systems to extend building lifespan and improve functionality.
• Energy-Saving Diagnosis (省エネルギー診断) Energy-saving diagnosis service that analyzes existing building energy consumption and provides recommendations for appropriate energy efficiency improvements.
• Deterioration Diagnosis and Evaluation (劣化診断評価) Building equipment deterioration diagnosis and evaluation service using BELCA-certified technicians to assess equipment condition and provide lifecycle cost optimization recommendations.
• Renewal ZEB (リフレッシュZEB) Zero Energy Building renovation technology that achieves ZEB standards through equipment renewal combined with building-wide renovation, supporting customer carbon neutrality goals.

Quantifiable outcome

• Achieved ZEB Ready certification for Yokohama Branch building with 39% CO2 reduction and 38.4% energy cost reduction
• +1 more outcomes

Named customers13 records

Segments8 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Four partnerships are on record, tiered core and minor.

• 大成建設株式会社coreStrategic or Co-development Partner · 1 April 1965Parent company of大成設備. 大成設備 was originally established as Daiko Setsubi Koji Co., Ltd. (大幸設備工事株式会社) and later renamed to Taisei Setsubi Co., Ltd. (大成設備株式会社) in 1968. The company operates as a subsidiary within the Taisei Corporation group, receiving construction projects and technical support while maintaining independent operations.
• 大成建設技術センターcoreStrategic or Co-development PartnerTaisei Corporation's technology center where大成設備 participated in construction of the ZEB demonstration building (人と空間ラボ).
• 大成ユーレック株式会社minorStrategic or Co-development PartnerTaisei Group company.大成設備 collaborated on the 大成ユーレック川越工場 ZEB project achieving net ZEB certification.
• 株式会社リンクアンドモチベーションminorOthersProvides モチベーションクラウド (Motivation Cloud) platform for engagement surveys. The company achieved AA rating (61.9) in the June 2025 survey, above the construction industry average of 47 (B).

Scale indicators8 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• Taisei Corporation: Parent company and Japan's largest super-zeneral contractor. While a broader incumbent that handles overall construction management, Taisei Corporation is the source of substantial project flow to Taisei Setsubi and shapes its competitive positioning within the group.
• Shimizu Corporation: One of Japan's largest general contractors with a comprehensive building services portfolio. Comparable to Taisei Corporation as a group peer — competes with Taisei Setsubi (and its parent) in delivering integrated MEP packages for large-scale projects.

Direct peers

• Yurtec Corporation: Tohoku-region electrical and mechanical construction contractor with national reach. Comparable in scale and service mix to Taisei Setsubi, particularly in facility electrical and HVAC work.
• Kyudenko: Large Japanese electrical and mechanical engineering contractor based in Kyushu. Overlaps with Taisei Setsubi's facility construction services, particularly in electrical and HVAC installation.
• Kandenko: One of Japan's largest electrical construction and infrastructure companies. Overlaps with Taisei Setsubi's electrical equipment work, though Kandenko is more weighted toward power infrastructure and telecom.
• Nippon Densetsu Kogyo: Japanese electrical construction company specializing in railway and building infrastructure. Comparable to Taisei Setsubi in electrical equipment contracting for transportation and institutional facilities.
• Dai-Dan (Taikisha): Japanese MEP and industrial HVAC engineering contractor. Comparable in integrated building equipment design-build and the broader construction services market that Taisei Setsubi serves.
• Takasago Thermal Engineering: Japan's largest HVAC/building services engineering contractor. Directly competes with Taisei Setsubi in air conditioning, plumbing, and electrical equipment construction for commercial, industrial, and public-sector projects, with similar one-stop MEP service model.
• Sanki Engineering: Major Japanese HVAC, plumbing, and electrical facility construction specialist. Directly comparable to Taisei Setsubi in integrated building equipment contracting, with similar customer mix across government, healthcare, and commercial real estate.
• Kinden Corporation: Major Japanese electrical construction contractor with broad facility services. Comparable to Taisei Setsubi in electrical and HVAC contracting for buildings, with established nationwide branch network similar to Taisei Setsubi's 10 branches.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/%E5%A4%A7%E6%88%90%E8%A8%AD%E5%82%99%EF%BC%88%E6%A0%AA%EF%BC%89

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about 大成設備（株）