Tomoe Shokai

What Tomoe Shokai does

Tomoe Shokai (株式会社巴商会, Tomoe Shokai Co., Ltd.) is a Japanese industrial machinery manufacturer founded in 1910, headquartered in Minato, Tokyo, and operating as a member company of the Suzuyo Group, a 200-year-old Japanese conglomerate of more than 140 companies. The company designs, manufactures, and services boilers, pressure-free hot water machines, biomass boilers, commercial laundry equipment, far-infrared and sauna heaters, and filtration circulation systems. Its core technology centers on combustion engineering, heat exchange, and energy efficiency, exemplified by the TOMOE LEGACYα series of boilers/hot-water units, the TSiFTα compact high-efficiency line (with the BHC-800 model achieving 105% efficiency via latent heat recovery), and a woody biomass boiler range in which the company claims domestic No.1 market share. The firm is the originator of Japan's first circulating bath boiler system (1910) and operates a vertically integrated R&D-to-maintenance model with a manufacturing facility in Matsudo.

The company's product portfolio spans general-fuel boilers (heavy oil, kerosene, city gas, LPG), environmentally focused boilers (biogas, biodiesel), and woody biomass systems handling raw wood chips, dry chips, pellets, and logs, including integrated biomass-powered cogeneration (Stirling engine) and biomass-powered absorption chiller HVAC systems. Revenue is generated through three streams: one-time capital equipment sales (boilers, hot-water units, laundry, heaters, filtration), monthly recurring rental contracts for commercial dryers (¥11,000/month for single-stack, ¥22,000/month for double-stack, including full maintenance), and ongoing full-maintenance service contracts covering periodic inspection, parts replacement, and emergency repair. The company sells and services directly through a 19-office nationwide Japanese network spanning Hokkaido to Kagoshima, targeting hot-spring/accommodation facilities, medical/welfare institutions, commercial laundry operators, local governments, factories, and agricultural sites.

Go-to-market is sales-led and manufacturer-direct, with no third-party distribution disclosed. Partnerships with Osaka Gas, Keiyo Gas, Shikoku Gas, and Toho Gas extend regional reach for gas-fired products, while industry-association memberships (J-BBA, JWBA, JBFSA, Japan Wood Pellet Association) and a Tokyo Metropolitan Government Environmental Bureau SDG partnership support positioning in biomass standardization and policy. The company holds ISO 9001 certification, JIA gas-appliance type certification on the BH-800 series and dryers, JET certification on electric dryers, and Building Energy Conservation Act performance documentation across the BH/BHC/LH/BHT/TM/BM product families, enabling specification into government and public-facility procurement.

Name

Tomoe Shokai

Legal name

株式会社巴商会

Website

https://tomoeshokai.com

Company type

Private

Founded year

1910

Operating status

Operating

Headcount range

101–250 employees

Short description

Tomoe Shokai (株式会社巴商会) is a 1910-founded Japanese manufacturer of boilers, pressure-free hot water units, woody biomass boilers (No.1 domestic market share), commercial laundry equipment, and far-infrared heaters, selling directly through 19 offices across Japan to hot springs, hospitals, laundries, governments, and industrial customers, with revenue from equipment sales, rental subscriptions, and full-maintenance service contracts.

Ownership category

akta.pro rank

Product category

Industrial Boilers and Heating Equipment

NAICS

Heating Equipment (except Warm Air Furnaces) Manufacturing (333414), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (3334), Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Heating Equipment, Except Electric & Warm Air Furnaces (3433), Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564)

akta.pro primary industry

Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC)

akta.pro secondary industries

Heat Exchangers, Coils & Hydronic HVAC Components (IMADANAF), Water Systems & Treatment (Pumps/Boilers/Water Heaters/Filtration) (IMAIABAK), Air Quality & Filtration Equipment (IAQ) (IMAHAKAI), Chillers, Boilers & Central Plant Operations (BPABACAG)

Keywords

• Biomass boilers
• Hot water boilers
• Commercial laundry equipment
• Far-infrared heaters
• Filtration circulation systems

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices19 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Equipment Sales: Direct sales of boilers, hot water units, biomass boilers, laundry equipment, heaters, and filtration systems to end customers
2. Rental Services: Monthly rental contracts for laundry dryers including full maintenance coverage. Models include single-stack (7kg) starting at ¥11,000/month and double-stack (7kg×2) starting at ¥22,000/month
3. Maintenance Services: Regular maintenance contracts for all products including periodic inspections, parts replacement, and emergency repairs. '定期フルメンテナンス契約' (Full Maintenance Contract) available

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Tomoe Shokai designs, manufactures, and sells industrial and commercial heating and water-treatment equipment, including oil/gas-fired boilers, pressure-free hot water machines, woody biomass boilers, multi-fuel biomass boilers, commercial laundry washers and dryers, far-infrared heaters and sauna heaters, and filtration circulation systems for bathing facilities. The company also provides full maintenance contracts and a rental program for laundry dryers to commercial and institutional customers across Japan.

Product overview

Tomoe Shokai is a comprehensive manufacturer offering a diverse portfolio of heating and water treatment products. The core product lines include the TOMOE LEGACYα series (BH, LH, BHT, TM, BM) and TSiFTα series (BH-800, BHC-800, BH-800GU) of pressure-free hot water machines and boilers with outputs ranging from 69.8kW to 1,163kW, featuring efficiency rates up to 105%. The woody biomass boiler lineup (UTSR, UTSK/UTSP, ENER, Novatronic) leads the domestic market with the ability to utilize wood chips, pellets, and logs as fuel. Multi-fuel biomass boilers handle waste plastic and residue materials. The company also produces biogas and biodiesel fuel boilers for renewable energy applications. Laundry products include commercial washers and dryers (SJ series, SWNNX2) available for purchase or rental. Far-infrared heaters (HO series in ceiling-mounted, corner, and embedded types, plus SH series sauna heaters) provide efficient space heating. Filtration circulation systems (TFS-CE, TFS-H, TFS-C/B) maintain water quality in bathing facilities. All products are developed, manufactured, sold, and maintained in-house since the company's founding in 1910.

Differentiator

Problem solved

Functional benefit

Brands

• TOMOE LEGACYα: Boiler/hot water machine product line inheriting 100+ years of tradition, including BH, LH, BHT, TM, and BM series.
• TSiFTα
• 巴ボイラ
• 巴保全 (Tomoe Hozen)
• コンテック事業本部 (Contec)

Products and services

• TOMOE LEGACYα BM Series Boiler Standing-start rapid heating boiler with thermal efficiency of 85–90%, used for heating and circulation heating applications in commercial facilities.
• TOMOE LEGACYα TM Series Hot Water Boiler Top-supply water storage type hot water boiler with high hot water storage efficiency, used in commercial and institutional facilities.
• TOMOE LEGACYα BH Series Pressure-Free Hot Water Machines Standard type pressure-free hot water machines and boilers for commercial and institutional hot water supply.
• TOMOE LEGACYα LH Series Pressure-Free Hot Water Machines Narrow-space-compatible pressure-free hot water machines designed for installation in confined mechanical rooms.
• TOMOE LEGACYα BHT Series Heat-Storage Pressure-Free Hot Water Machines Heat storage type pressure-free hot water machines that store thermal energy for on-demand hot water delivery.
• TSiFTα BH-800 Series Compact High-Efficiency Hot Water Machines Compact pressure-free hot water machines with 91–92% efficiency across a 116–698kW output range, designed for commercial facilities with limited space.
• TSiFTα BHC-800 Series Latent Heat Recovery Boiler Ultra-high-efficiency latent heat recovery boiler achieving over 100% efficiency (105% for 13A gas, 102% for LPG), with a fault-prediction notification lamp.
• TSiFTα BH-800GU Series Connecting-Pipe Hot Water Machine System Connecting-pipe multi-unit hot water system integrated on a single base, engineered to prevent complete hot water outages during emergencies.
• Woody Biomass Boiler UTSR visio Woody biomass boiler capable of burning raw wood chips without prior drying, with an automatic smoke-tube cleaning mechanism for low-maintenance operation.
• Woody Biomass Boiler UTSK / UTSP Low-moisture-fuel dedicated combustion biomass boiler with automatic ignition device, positioned as a cost-effective high-performance model.
• Woody Biomass Boiler ene"R" (ENER) Domestic woody biomass boiler burning dry chips and pellets with an original combustion system achieving 85% high efficiency.
• Woody Biomass Boiler Novatronic XV Wood-log biomass boiler accepting 50cm or 1m logs directly, capable of continuous combustion for more than four hours per fuel load.
• Biomass Heat Utilization + Power Generation System Stirling engine power generation system using a biomass combustion furnace as heat source, delivering 180kW thermal output and 10kW electric generation.
• Biomass Heat Utilization + Air Conditioning System Absorption chiller air conditioning system powered by biomass-boiler hot water for combined heating and cooling.
• Waste Plastic Boiler (RPF/RDF fuel) Boiler using RPF/RDF fuel from combusted waste plastic, supporting recycling and CO2 reduction.
• Residue Boiler Boiler utilizing various waste materials including food residue, agricultural waste, and other discarded materials.
• Biogas Boiler Boiler using methane-fermented biogas with automatic fuel switching between biogas and backup fuel, 35kW–350kW output range.
• Biodiesel Fuel Boiler (BDF) Boiler using biodiesel fuel (BDF) from plant oils, contributing to zero CO2 emissions, 69.8kW–291kW output range.
• Commercial Clothes Dryer SJ030N Slim-body space-saving commercial clothes dryer with 13kg drying capacity for coin-operated laundries and commercial cleaning operators.
• Commercial Clothes Dryer SJ055N / SJ075N Full-scale large-capacity commercial dryers: SJ055N with 24kg capacity and SJ075N with 34kg capacity.
• Two-Tier Commercial Clothes Dryer SJT30N High-speed two-tier commercial clothes dryer with 13kg × 2 tier drying capacity for high-throughput laundry operations.
• Commercial Washing Machine SWNNX2 Large-capacity commercial electric washing machine with 6kg capacity, high-speed spin, and inverter control for energy savings.
• Rental Commercial Clothes Dryer SDGNCAGS (Single-Tier, 7kg) Single-tier rental commercial clothes dryer with 7kg capacity, monthly rental from ¥11,000 (tax included), bundled with fire-prevention support device and maintenance.
• Rental Commercial Clothes Dryer SSGNCAGS (Two-Tier, 7kg×2) Two-tier rental commercial clothes dryer with 7kg × 2 tier capacity, monthly rental from ¥22,000 (tax included), bundled maintenance.
• Far-Infrared Heater HO Series — Ceiling-Suspended Type Ceiling-suspended far-infrared heater that warms targeted areas efficiently without occupying floor space.
• Far-Infrared Heater HO Series — Corner Type Corner-type far-infrared heater with space-saving design and 20.3kW rated input.
• Far-Infrared Heater HO Series — Ceiling-Embedded Type Ceiling-embedded far-infrared heater for unobtrusive installation, available in city gas and LP gas models, 19.5kW rated input.
• Far-Infrared Sauna Heater SH Series Gas far-infrared sauna heater for sauna rooms of 3–28 m², providing comfortable mid-temperature (80–90°C) heating with quick warm-up and 40–50% energy savings compared with electric saunas.
• Filtration Circulation Device TFS-CE Compact filtration circulation device with 24-hour comfort and energy savings, processing capacity 5–35 m³/h, used in bathing facilities.
• Filtration Circulation Device TFS-H Automatic filtration circulation device with built-in hot water heater and digital program timer for bathing facilities.
• Filtration Circulation Device TFS-C / TFS-B Fully automatic filtration circulation device with digital program timer, processing capacity 3–50 m³/h, used to maintain bath water quality.
• Tomoe Shokai Full Maintenance Service (定期フルメンテナンス契約) Recurring full maintenance contract covering periodic inspections, parts replacement, and emergency repairs for all installed Tomoe Shokai boilers, biomass boilers, laundry equipment, heaters, and filtration systems, delivered through the nationwide branch network.

Quantifiable outcome

• Biomass boiler hybrid configuration achieves 90% CO2 reduction compared to oil-only operation
• +4 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Six partnerships are on record, tiered core and minor.

• 鈴与グループ (Suzuyo Group)coreStrategic or Co-development PartnerParent company group with over 200 years of history and 140+ member companies. Provides strong financial foundation enabling competitive pricing for Tomoe Shokai products.
• 東京都 環境局 (Tokyo Metropolitan Government Environmental Bureau)minorStrategic or Co-development PartnerGovernment partnership for environmental initiatives and SDGs
• 一般社団法人固体バイオ燃料標準化協議会 (JBFSA)minorStrategic or Co-development PartnerIndustry association for solid biofuel standardization
• 一般社团法人日本木質ペレット協会 (Japan Wood Pellet Association)minorStrategic or Co-development PartnerIndustry association promoting wood pellet usage
• 一般社团法人日本木質バイオマスエネルギー協会 (JWBA)minorStrategic or Co-development PartnerIndustry association for woody biomass energy
• 一般社团法人バイオマスボイラ工業会 (J-BBA)minorStrategic or Co-development PartnerIndustry association for biomass boiler manufacturers

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• IHI Corporation: Japanese industrial conglomerate with boiler manufacturing operations and energy infrastructure focus. Comparable to Tomoe in industrial-scale boiler production, with broader portfolio and international footprint.
• Bosch Thermotechnology: Global heating and hot-water solutions division of Bosch, offering commercial boilers, biomass, and heat-pump systems. A broad incumbent whose portfolio overlaps Tomoe's hot water and biomass categories, but at much larger scale and broader geographic reach.
• Daikin Industries, Ltd. Global HVAC leader with growing presence in commercial heating, hot water, and decarbonization solutions. A broad incumbent whose heat-pump and electrified heating products compete with Tomoe's traditional boiler portfolio for the same Japanese commercial customers.
• Mitsubishi Heavy Industries Thermal Systems: Major Japanese industrial conglomerate with commercial/industrial boiler and HVAC offerings. Overlaps Tomoe Shokai in commercial boiler equipment and large-scale industrial heating, with substantially greater R&D resources.

Emerging players

• Ferroli S.p.A. European heating manufacturer with condensing boilers, biomass, and heat-pump product lines. Partial overlap with Tomoe's commercial boiler and biomass offerings; smaller in Japanese market presence but technically adjacent.

Direct peers

• Herz Energietechnik GmbH: Austrian biomass boiler specialist producing wood-chip, pellet, and log-fired heating systems for commercial and district heating applications. Direct overlap with Tomoe's woody biomass boiler range and end-customer profile.
• Froling Heizkessel- und Behälterbau Ges.m.b.H. Austrian specialist manufacturer of wood-chip, pellet, and log biomass boilers for commercial and industrial customers. Highly comparable to Tomoe's woody biomass product line (chips, pellets, logs) and to its commercial/industrial target segments.
• Miura Co., Ltd. Japan-based industrial and commercial boiler manufacturer with strong domestic market share in compact boilers and water heaters. Highly comparable to Tomoe Shokai in product category (boilers, hot water), end customers (commercial/industrial), and Japan-centric direct-sales model.
• Viessmann Group: German-based manufacturer of heating, industrial, and refrigeration systems with a strong biomass and condensing-boiler portfolio. Comparable to Tomoe Shokai in commercial/industrial boiler product breadth, multi-fuel offerings, and integrated service model.
• Takuma Co., Ltd. Japanese manufacturer of boilers, waste-to-energy plants, and environmental equipment serving industrial and municipal customers. Directly comparable to Tomoe Shokai in industrial boiler manufacturing and renewable/waste-fuel energy systems, including biomass and refuse-derived fuel.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries2 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 Tomoe Shokai