What Hotwork International Ag does

Hotwork International AG is a privately held, family-owned Swiss industrial services and combustion technology company headquartered in Egnach, Switzerland, tracing its origins to Hotwork Ltd., founded in England in 1962. The company specializes in refractory dry-out and heat-up services, furnace draining, thermal regenerator cleaning, hot repairs, and oxy-fuel services for industrial furnaces across heavy-industry verticals including glass, aluminum, copper, steel, cement, hydrocarbon and chemical, power generation, incineration, and nonferrous metals. It serves enterprise customers such as ArcelorMittal, Tata Steel, Rio Tinto, Alcoa, Saint Gobain, AGC, and SpaceX through 16 subsidiary and partner offices across 65+ countries, deploying 600+ specialized technicians and engineers with 24/7/365 availability.

The company's core technology stack centers on proprietary high-velocity combustion systems — including the HV-1500, HV-3000, and HVO-3600 burner families with a 100:1 turndown ratio and temperature control across 80–1400°C — alongside Low NOx air-fuel and oxy-fuel combustion, electric boosting technology, hydrogen burners, and the OptiFlame Melting Technology platform for aluminum smelters. Supporting equipment includes the Six Way Console multi-zone control system and a Water Recycling System that recycles approximately 90,000 liters of water per hour and achieves 80% water savings during furnace draining. The firm is a stated pioneer in Low NOx combustion and increasingly positions CO2 reduction solutions (hydrogen, oxygen, and bio-fuel combustion) as a growth vector aligned with industrial decarbonization mandates.

Revenue is generated through a hybrid model combining project-based professional services (refractory dry-out, heat-up, draining, PWHT, hot repairs) priced per custom quote under multi-year contracts, and hardware sales of proprietary combustion equipment and control systems. Distribution is delivered via direct enterprise field sales through the wholly-owned subsidiary network and a complementary channel partner program spanning North America, Europe, the Middle East, Africa, and Asia-Pacific. To date the company reports 10,000+ service projects completed, 580+ combustion systems installed, and 92+ aluminum furnaces served, with no public revenue disclosure.

Name

Hotwork International Ag

Legal name

Hotwork International AG

Website

https://hotwork.ag

Company type

Private

Founded year

1962

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Hotwork International AG is a privately held Swiss industrial services firm that delivers refractory dry-out, furnace heat-up, draining, and proprietary combustion technology (high-velocity burners, Low NOx systems, hydrogen burners) to heavy-industry enterprises across glass, aluminum, steel, copper, cement, and petrochemical verticals in 65+ countries.

Ownership category

akta.pro rank

Product category

Industrial Furnace Services and Combustion Technology

NAICS

Industrial Process Furnace and Oven Manufacturing (333994), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414), Metal Heat Treating (332811)

SIC

Industrial Process Furnaces & Ovens (3567), Fabricated Plate Work (Boiler Shops) (3443)

akta.pro primary industry

Boilers, Furnaces & Process Heating Equipment (IMAHAKAD)

akta.pro secondary industries

Heat Treatment & Thermal Processing Furnaces (Hardening, Annealing, Induction) (IMAHADAI), Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC), High-Temperature Process Heat Electrification (E-Boilers, E-Furnaces, Induction, Plasma) (EUABAJAA)

Keywords

• Industrial furnace services
• Combustion technology systems
• Refractory dry-out services
• High velocity burners
• Hydrogen burner technology

Headquarters

HQ city

Egnach

HQ country

Switzerland

HQ region

Europe

Offices12 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Industrial Furnace Services: Specialized services including refractory dry-out and heat-up services, furnace draining, thermal regenerator cleaning, hot repairs, and oxy services. Services are delivered by 600+ specialized technicians and engineers globally.
2. Combustion Technology Products: Sale and installation of combustion systems including air-fuel, oxy-fuel, hydrogen burners, and electric boosting technology. Equipment includes HV-1500, HV-3000, HVO-3600 burners, Six Way Console, and Water Recycling Systems.
3. CO₂ Reduction Technology Solutions: Advanced fuel management systems and hydrogen/oxygen/bio-fuel combustion technology that help industries minimize carbon footprint and reduce CO₂ emissions.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Hotwork International provides on-site industrial furnace heat-up, draining, and refractory dry-out services along with engineered combustion technology products. The company sells air-fuel, oxy-fuel, hydrogen, and electric boosting combustion systems, high-velocity burners (HV-1500, HV-3000, HVO-3600), the Six Way Console multi-zone control system, and a Water Recycling System to heavy-industry operators worldwide.

Product overview

Hotwork International AG offers a comprehensive portfolio of industrial combustion and furnace services. The core offerings include Combustion Technology (Air-Fuel and Oxy-Fuel Combustion Systems), Hydrogen Burner technology, Electric Boosting Technology, and Furnace Heat Up & Drain Services. Equipment products include the HV-1500, HV-3000, and HVO-3600 high velocity burners, the Six Way Console multi-zone control system, and the Water Recycling System. The company provides specialized services such as Refractory Dry-Out, CO₂ Reduction Technology, Post Weld Heat Treatment (PWHT), and industry-specific solutions for Glass, Aluminium, Copper, Steel, Hydrocarbon/Chemical, Cement, Boiler, Incinerator, Nonferrous Metals, and Refractory industries. The portfolio is delivered through a global network of 600+ specialized technicians and engineers operating in over 65 countries.

Differentiator

Problem solved

Functional benefit

Brands

• Hotwork Heat Treatment and Specialized Services (HTS): Specialized heat treatment services including post-weld heat treatment (PWHT) for industrial applications.
• IRSP (International Refractory Lining Services)
• Heat Applications India (HAL)
• Heat Applications Global (HAG)
• Total Project Management (TPM)

Products and services

• Combustion Technology and Electric Melting Air-Fuel and Oxy-Fuel Combustion Systems plus turnkey Electric Boosting Technology that lowers emissions, improves energy efficiency, and raises melting performance for industrial furnace operators.
• Furnace Heat Up and Drain Services Global on-site furnace heat-up, cooling-down, and draining services delivered with 600+ Heat Up Burner Sets and 10 Furnace Recycling Drain Sets by 600+ engineers and technicians for industrial furnace commissioning projects.
• CO2 Reduction Technology Advanced fuel management systems and hydrogen, oxygen, and bio-fuel combustion solutions that minimize carbon footprint and optimize energy use across melting, ladle heating, and recycling processes.
• Refractory Dry-Out Services Controlled heating services to safely remove moisture from newly installed refractory linings, preventing cracking or spalling from thermal stress in industrial furnaces.
• OptiFlame Melting Technology Custom-engineered melting solution that delivers consistent temperature distribution across aluminum furnaces, driving energy savings and improved operational efficiency for aluminum smelters.
• Glass Melting Technology Low NOx high energy efficiency solutions for float glass, container glass, tableware, and fiberglass melting furnaces, including combustion systems and electric boosting upgrades.
• HV-1500 High Velocity Burner High-velocity natural gas burner with max flow of 100 Nm³/h (approx. 1100 kW), compact design for easier transport, used for smaller or mid-size furnaces and preheat projects.
• HV-3000 High Velocity Burner High-velocity gas burner with max capacity of 300 Nm³/h natural gas and 5,800 Nm³/h combustion air, featuring UV cell flame supervision and 2-second safety shutdown for industrial furnace work.
• HVO-3600 High Capacity Oil Burner High-capacity oil burner rated 190 l/h diesel/light oil (boosted 450 l/h) with 6,800 Nm³/h combustion air, designed for large furnaces and high-mass structures.
• Six Way Console Multi-Zone Control System Multi-zone control system for thermal treatments with 50 kVA electrical rating, managing up to six independent heating circuits simultaneously for industrial furnace commissioning.
• Water Recycling System Closed-loop environmental water recycling system for furnace draining that recycles approximately 90,000 liters of water per hour and achieves 80% water savings.
• Post Weld Heat Treatment (PWHT) Stress relief and heat treatment service for welded structures, improving weld microstructure and reducing residual stresses to extend the life of vessels, pressure tanks, and process equipment.

Quantifiable outcome

• 10,000+ service projects completed
• +5 more outcomes

Named customers38 records

Segments10 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

28 partnerships are on record.

• Heat Up Latin América, S. De R.l. De C.v.OthersSubsidiary operating in Mexico and Latin America, providing furnace heat-up and draining services. Contact: Mr. Luis Weller, Cuernavaca, Morelos, México.
• Hotwork International South America S.A.OthersSubsidiary serving South American markets from Argentina. Contact: Mr. Martín I. Donadío, San Nicolás de los Arroyos, Buenos Aires, Argentina.
• Heat Applications Global Ltd.OthersSubsidiary serving Australia and Oceania region. Contact: Mr. Jason Tomkins, Ingleburn NSW, Australia.
• MPOT Hotwork Solutions Ltd.OthersSubsidiary in Sofia, Bulgaria serving Central and Eastern Europe. Contact: Mr. Lyusien Adam.
• Hotwork International Inc.OthersSubsidiary in the Philippines serving Asia-Pacific region. Contact: Miss. Marcia Lopez, Lapu-Lapu City, Cebu, Philippines. Established 1994.
• Hotwork-XiX Ltd.OthersSubsidiary in Shanghai, China. Contact: Mr. John Dai, Songjiang District. Specializes in magnetic drive technology and combustion. Established 2000.
• Heat Applications India Pvt. Ltd.OthersSubsidiary in India serving the Indian subcontinent. Contact: Mr. Daniel Kirkham, Vadodara, Gujarat. Founded 1996.
• PT Hotwork International IndonesiaOthersSubsidiary in Indonesia with new office building and warehouse in Jakarta. Contact: Decilina D.K. Established 2016, new facility 2024.
• Total Project Management Ltd.OthersSoftware development subsidiary in the Philippines. Contact: Lapu-Lapu City, Cebu. Founded 2021.
• Hotwork International (Thailand) Co. Ltd.OthersSubsidiary in Thailand serving Southeast Asia. New office and warehouse opened 2025 in Bangkok. Contact: Mr. Prasert Chatcharit.
• Hotwork Heat Treatment and Specialized Services LDAOthersSubsidiary in Portugal providing heat treatment services. New office and warehouse opened 2022. Contact: Mr. Dany Reyes, Martingança.
• Hotwork Heat Treatment and Specialized Services B.V.OthersEuropean hub in the Netherlands serving Netherlands and greater Europe. Contact: Mr. Siep Klok, Vierpolders.
• IRSP GermanyOthersRefractory services subsidiary in Germany. Contact: Mr. Uwe Van Waasen.
• IRSP IncOthersInternational Refractory Lining Services in the Philippines. Founded 2018. Contact: Philippines office.
• MPOT LLCChannel Partner/ Reseller/ DistributorChannel partner in the United States. Contact: Mr. Curt Bermel, Wheaton, IL, USA.
• Xothermic, IncChannel Partner/ Reseller/ DistributorPartner company in USA. Contact: Mr. Benjamin Köster, Orlando, FL, USA.
• Matom Refractory Engineering Sp. Z.o.o.Channel Partner/ Reseller/ DistributorPartner in Poland. Contact: Mrs. Ewelina Pasamonik, Gliwice, Poland.
• MATOM REFRACTORIES Czech-Slovakia s.r.o.Channel Partner/ Reseller/ DistributorPartner in Czech Republic. Contact: Mrs. Halina Tarjanova, Frystat, Czech Republic.
• Matom Baltics OÜChannel Partner/ Reseller/ DistributorPartner in Estonia. Contact: Mr. Märt Kruus, Rapla, Estonia.
• RecEng SrlChannel Partner/ Reseller/ DistributorPartner in Italy. Contact: Mr. Paolo Gastaldi, Milan, Italy.
• Thermotech ASChannel Partner/ Reseller/ DistributorPartner in Norway. Contact: Mr. Trond Inge Johnsen, Nesttun, Norway.
• MPOT GmbhChannel Partner/ Reseller/ DistributorPartner in Austria. Contact: Michael Potesser, Kindberg, Austria.
• AGC Ceramicis Co. Ltd.Technology or IntegrationPartner in Japan. Contact: Tokyo, Japan.
• HEM Engineering & Consulting Co., Ltd.Channel Partner/ Reseller/ DistributorPartner in Turkey. Contact: Mr. Hüseyin Uzun, Istanbul, Turkey.
• Trevis CorporationChannel Partner/ Reseller/ DistributorPartner in South Korea. Contact: Mr. Davd J. Kim, Busan, Korea.
• Alzar FZEChannel Partner/ Reseller/ DistributorPartner in UAE. Contact: Mr. Ziaur Rahman, Jebel Ali Freezone, Dubai.
• DGC AfricaChannel Partner/ Reseller/ DistributorPartner in South Africa. Contact: Mr. Justin Nothnagel, Vereeniging, South Africa.
• Ind. Eng. & Trad. Co.Channel Partner/ Reseller/ DistributorPartner in Egypt. Contact: Mrs. Abir El Saharty, Cairo, Egypt.

Scale indicators10 records

Recent moves17 records

Expansion highlights6 records

Broad incumbents

• Air Products: Global industrial gases major offering oxy-fuel combustion technology and on-site gas supply to glass, metals, and process industries. Comparable as a customer and potential competitor in industrial combustion services.
• SMS group: Global plant and equipment manufacturer for the metals industry, with broader metallurgical plant scope. Comparable as a larger incumbent serving Hotwork's steel and aluminum customer base with furnace-related technologies.
• Honeywell Thermal Solutions: Honeywell division supplying industrial burner and combustion control technologies across process industries. Compares to Hotwork on the burner-equipment side while being part of a much broader industrial portfolio.

Direct peers

• Tenova: Italy-headquartered supplier of technologies for metals and mining with industrial furnace and combustion offerings. Overlaps with Hotwork in aluminum, steel, and industrial furnace services globally.
• Danieli: Italian supplier of plants and equipment for the steel and nonferrous metals industry, including furnace and combustion systems. Overlaps with Hotwork in metal-industry furnace services and combustion technology.
• NUTEC Bickley: Industrial furnace manufacturer and heat-treatment services company serving ceramics, steel, and process industries. Closely comparable in industrial furnace design, combustion systems, and on-site service delivery.
• Fives Group: French industrial engineering group with Pillard combustion and Stein furnace divisions serving glass, steel, aluminum, and cement. Directly comparable to Hotwork in combustion technology, furnace services, and global heavy-industry customer base.
• Saint-Gobain (Riedhammer): Saint-Gobain subsidiary supplying refractories and kiln/furnace systems to the glass, ceramics, and nonferrous metals industries. Closely comparable to Hotwork's glass and nonferrous furnace services and refractory focus.
• Bloom Engineering: Combustion equipment specialist designing industrial burners and heat-transfer systems for steel, glass, and process industries. Directly comparable to Hotwork's high-velocity burner and combustion technology portfolio.

Emerging players

• HarbisonWalker International: Refractory products and installation services company serving steel, glass, cement, and petrochemical customers. Adjacent peer in refractory services that complement Hotwork's dry-out and heat-up offerings.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries13 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 Hotwork International Ag