Press release
Once-Through Boilers (OTB) Market Outlook 2025-2034
According to Exactitude Consultancy, the global Once-Through Boilers (OTB) market is valued at USD 3.85 billion in 2024 and is expected to reach USD 6.55 billion by 2034, growing at a CAGR of 5.4% during the forecast period. Industries worldwide are transitioning from traditional boilers to OTB systems to improve plant efficiency and operational flexibility.Download Full PDF Sample Copy of Market Report @
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Once-Through Boilers heat water into steam in a single pass through a coil or tube without recirculation, enabling faster steam production and significant energy savings. Unlike conventional drum-type boilers, OTBs eliminate the need for water drums, reduce weight, and operate safely at higher pressures and temperatures.
Key Market Drivers:
• Need for energy-efficient boilers with low carbon emissions
• High steam demand in oil refining, chemicals, and food processing
• Strict environmental regulations pushing replacement of aging boilers
• Demand for compact systems in space-constrained industries
Major Challenges:
• High initial investment cost compared to conventional boilers
• Complex system integration with existing industrial infrastructure
• Requirement for skilled operators and automated controls
Market Segmentation
By Capacity:
• 40 TPH
By Pressure:
• Low Pressure
• Medium Pressure
• High Pressure
By Fuel Type:
• Oil-Fired
• Gas-Fired
• Coal-Fired
• Electric
• Hybrid
By End Use Industry:
• Power Generation
• Oil & Gas
• Chemicals & Petrochemicals
• Food & Beverage
• Textiles
• Pulp & Paper
• Pharmaceuticals
Summary:
Gas-fired and electric OTBs are gaining the most traction due to clean operation and ease of control, particularly in medium-pressure segments. The food & beverage and pharmaceutical industries are rapidly switching to OTBs due to sanitation standards and lower footprint needs.
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Regional Analysis
North America
• Mature boiler market with focus on retrofit and replacement
• U.S. leads in oil & gas and pharmaceutical applications
• Supportive regulations for low-emission industrial heating systems
Europe
• Strong emphasis on energy efficiency and carbon neutrality
• Germany, UK, and France lead in OTB adoption in manufacturing and chemicals
• Growing installation in district heating systems and waste heat recovery
Asia-Pacific
• Fastest-growing market due to industrialization in China, India, and Southeast Asia
• Strong demand from chemical, textile, and power sectors
• Government push for clean energy and process efficiency
Middle East & Africa
• Demand driven by refinery and desalination plants
• Oil-rich nations modernizing thermal infrastructure for sustainability
Latin America
• Growth in food processing, beverages, and pulp & paper industries
• Brazil and Mexico are key adopters of energy-efficient steam systems
Regional Summary:
Asia-Pacific dominates in terms of new installations, while North America and Europe show strong replacement demand. MEA and Latin America are emerging markets driven by sector-specific upgrades and energy transition initiatives.
Market Dynamics
Key Growth Drivers:
• Industrial Decarbonization Goals: OTBs provide lower fuel consumption and CO2 emissions
• Automation & Control: Advanced systems allow real-time monitoring and safety enhancements
• High Thermal Efficiency: OTBs achieve above 95% efficiency in optimized settings
• On-Demand Steam: Critical for batch processes and cyclic operations in pharmaceuticals, food, and chemicals
Challenges:
• Initial installation cost and system design complexity
• Compatibility issues with legacy systems in older plants
• Need for advanced instrumentation and skilled technicians
Market Trends:
• Electric and hybrid OTBs growing with renewable energy integration
• Integration with IoT and AI for predictive maintenance
• Development of modular, skid-mounted OTBs for decentralized steam generation
• Compact and mobile boilers for offshore and field operations
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Competitive Landscape
Key Players in the Once-Through Boilers Market:
• Mitsubishi Heavy Industries, Ltd.
• Clayton Industries
• Thermax Limited
• IHI Corporation
• Babcock & Wilcox Enterprises, Inc.
• Fulton Boiler Works, Inc.
• Miura Co., Ltd.
• Cleaver-Brooks, Inc.
• Bosch Industriekessel GmbH
• Forbes Marshall
• Viessmann Group
• Amec Foster Wheeler
• Hurst Boiler & Welding Co., Inc.
• Johnston Boiler Company
• Victory Energy Operations, LLC
Competitive Summary:
Major players are investing in low-NOx burner technologies, remote monitoring systems, and fuel-flexible designs. Asian manufacturers like Miura and Thermax lead in compact OTBs, while Western players focus on high-capacity industrial systems and process integration.
Conclusion: A Decade of Growth Ahead for High-Efficiency Steam Solutions
As industries transition to greener operations and leaner steam processes, Once-Through Boilers are becoming essential across a wide range of applications. With rapid startup, high thermal efficiency, and a compact footprint, OTBs support both economic and environmental goals.
The market is expected to reach USD 6.55 billion by 2034, with major opportunities in process industries, clean energy projects, and infrastructure upgrades. Manufacturers who invest in smart boiler systems, flexible fuel technologies, and digital integration will lead the next wave of industrial thermal innovation.
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This report is also available in the following languages : Japanese (貫流ボイラー(OTB)), Korean (일회 통과 보일러(OTB)), Chinese (直流锅炉(OTB)), French (Chaudières à passage unique (OTB)), German (Durchlaufkessel (OTB)), and Italian (Caldaie a passaggio singolo (OTB)), etc.
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About Us
Exactitude Consultancy is a market research & consulting services firm which helps its client to address their most pressing strategic and business challenges. Our market research helps clients to address critical business challenges and also helps make optimized business decisions with our fact-based research insights, market intelligence, and accurate data.
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