Boiler Deaerators Market to Reach USD 5,451 Million by 2031 Top 20 Company Globally

Boiler deaerators are specialized pressure vessels or packaged systems that remove dissolved oxygen and other non-condensable gases from boiler feedwater to prevent corrosion, improve plant reliability, and reduce maintenance and fuel costs. They are fundamental components in power plants, large industrial boilers, and many process industries (petrochemical, pulp & paper, food & beverage), available in tray-type and spray-type configurations as well as packaged feedwater systems. The industry mixes heavy fabrication (large, custom utility deaerators) and modular packaged units (smaller industrial systems), and demand is tightly linked to capital expenditure in power generation, petrochemicals, and large process plants.
The global market size for boiler deaerators in 2024 is USD 3,798 million, with an expected compound annual growth rate of 5.3% through 2031 reaching market size USD 5,451 million by 2031. With an average price per unit of USD 34,118 per unit, which implies total global units sold in 2024 of approximately 111,300 units. The factory gross margin of 18.3%, the factory gross profit per unit is approximately USD 6,244 and the cost of goods sold per unit is approximately USD 27,874. A cost-of-goods breakdown (is: raw materials and plate/fabrication, skilled labor and welding, heat treatment/pressure testing/QA, testing & instrumentation, logistics & commissioning. A single line full-machine production capacity is around 3,000 unit per line per year. Downstream demand is concentrated in power generation, oil & gas / refining, food & beverage and beverage deaeration/process steam, chemical & petrochemical and other industrial users and OEMs.
Latest Trends and Technological Developments
Manufacturers and system integrators are focusing on digital monitoring and smarter feedwater control, higher alloy internals for longer life, and modular packaged deaerators that shorten site establishment and commissioning timelines. A notable industry update: ANDRITZs group results and order intake commentary (July 2025) underscore continued capital projects and retrofit activity in large process sectors that indirectly lift demand for boiler auxiliaries, including deaerators. Spirax-Sarco continues to publish practical engineering guidance and product updates for steam and feedwater systems (examples across 2024 to 2025), reflecting ongoing industry emphasis on steam-system efficiency and integrated controls. Market research publications through 2024 to 2025 (various reports on deaeration and deaerator markets) highlight sustained, mid-single-digit CAGR expectations and rising demand in Asia Pacific driven by power and industrial capex. Dates: ANDRITZ results (July 2025), Spirax Sarco news and technical posts through 2024 to 2025, and several sector research releases across 2024 to 2025.
Cleveland-Cliffs Inc., a major North American flat-rolled steel producer, regularly purchases boiler deaerators from Cleaver-Brooks to maintain the efficiency and longevity of their high-pressure steam systems at their integrated steel mills. In a recent capital project to upgrade their power plant, Cleveland-Cliffs procured a large, custom-designed, high-capacity spray-type deaerator for approximately $120,000 per unit to ensure feedwater oxygen levels are reduced to near-zero parts per billion (ppb), thereby preventing corrosive damage to their high-value boilers and steam turbines.

The product is critically installed in the cogeneration facility at Kaiser Permanente's San Diego Medical Center. The hospital's central utility plant uses a Bryan Boilers deaerator, valued at approximately $85,000 per unit, to prepare feedwater for its boilers. This application is essential for generating clean steam used for sterilization, humidification, and space heating, ensuring uninterrupted, reliable, and safe hospital operations by preventing oxygen-induced corrosion in the entire steam loop.
Asia is the largest and fastest-growing regional market for deaerators due to aggressive capacity expansion in power generation, petrochemicals, pulp & paper, and heavy industry across China, India, South Korea, and Japan. China remains a major manufacturing center (both for OEMs and steel fabrication) and a major buyer for large utility deaerators, supported by local EPCs and state-owned engineering firms. Indias expanding thermal and process-industry projects are increasing demand for packaged and custom deaerators. Local Chinese EPCs and fabricators also produce many units for domestic projects and export to neighboring countries. Regional priorities include reducing corrosion-related downtime, optimizing steam-system efficiency, and retrofitting aging boilers with modern feedwater handling and control systems. Market reports and company releases show Asia Pacific consistently outpacing other regions for new installations and aftermarket growth.
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Boiler Deaerators by Type:
Tray-type Deaerator

Spray-type Deaerator

Boiler Deaerators by Systems:
Thermal Deaerator

Vacuum Deaerator

Boiler Deaerators by Structure:
Vacuum Deaerator

Atmospheric Deaerator

High-pressure Deaerator

Boiler Deaerators by Material:
Carbon Steel Construction

Stainless Steel Grades

Duplex and Alloy Steel

Composite or Lined Materials

Others

Boiler Deaerators by Usage:
Power Generation Boiler

Oil and Gas Refining Processes

Food and Beverages Plants

Pupl and Paper Mills

Others

Boiler Deaerators by Application:
Chemical

Food

Papermaking

Generate Electricity

Others

Global Top 20 Key Companies in the Boiler Deaerators Market
Vapor Power (Thermon)

STS Canada

Bilfinger Thermeq (former Stork)

Ecodyne

ThermaFlo Incorporated

Newterra

Precision Boilers

Cleaver-Brooks

Kansas City Deaerator

Industrial Steam

Sterling Deaerator Company

MACH Engineering

Shipco Pumps

Äager

BSF Industries

Lockwood Products

Parker Boiler

Sellers Manufacturing Co.

Green India Technologies

US Deaerator

Regional Insights
Within Southeast Asia, demand clusters around countries undergoing industrialization and power capacity upgrades: Indonesia, Thailand, Vietnam, Malaysia, and the Philippines. Indonesia is a key market due to ongoing power-plant additions, pulp & paper projects, and downstream process investment; state utilities and independent power producers frequently specify robust deaeration systems for reliability. ASEAN buyers often prefer a mix of imported premium OEMs for large utility projects and regional fabricators/suppliers for smaller packaged units and spares. Logistics, local content rules in some projects, and the availability of competent pressure-vessel fabricators are important buying considerations. ASEAN aftermarket and spare-parts demand is steady, driven by maintenance cycles and boiler-retrofit activity. Regional signals in 20242025 show a blend of new small-to-mid scale installations and selective utility upgrades rather than mass new builds.
The industry faces several challenges: long lead times and complex engineering for utility-scale deaerators (driving CAPEX and working-capital needs), volatility in steel and alloy prices affecting COGS, skilled-welder and pressure-vessel fabrication capacity constraints in some markets, and buyer pressure for lower installed cost which can squeeze margins. Regulatory and safety compliance (ASME/HEI/pressure-vessel codes) and the need for site-specific customization complicate standardization and mass production. Retrofitting older boiler systems requires careful engineering to ensure compatibility and to avoid service interruptions, which raises overall project execution risk.
Manufacturers should prioritize modular product lines and factory-packaged skid solutions to reduce establishment time and simplify procurement for EPCs and industrial users. Investing in digital condition monitoring and integration with plant DCS systems increases aftermarket revenue and strengthens customer lock-in. For fabricators in Asia and ASEAN, building demonstrable ASME/HEI and project-execution credentials (including local fabrication partnerships) enables participation in larger utility tenders. Strategic M&A or partnerships between Western OEMs and Asian fabricators can accelerate market access while preserving engineering IP. Aftermarket service networks, spare-parts availability, and fast lead-time packaged units are growing differentiators in ASEAN markets.

Product Models
Boiler deaerators are essential components in steam generation systems designed to remove dissolved gases primarily oxygen and carbon dioxide from feedwater before it enters the boiler. The removal of these gases prevents corrosion in boiler systems, improving efficiency and longevity.
Tray-type deaerators function by distributing feedwater over a series of perforated trays within a pressurized chamber. Notable products include:
Model 3000 Tray Deaerator Cleaver-Brooks: High-performance tray system ensuring oxygen removal to 0.005 cc/L, suitable for utility boilers.
Spray & Tray DA-200 Spirax Sarco: Combines spray and tray action for enhanced degassing and feedwater conditioning.
BFW Tray DA Series Industrial Steam: Durable carbon steel construction optimized for large-capacity boiler rooms.
Traymaster 500 Precision Boilers: Modular design for easy maintenance and quick gas removal efficiency.
Bryan Tray-Type DA-900 Bryan Boilers: Designed for continuous steam boiler operation with low vent losses.
Spray-type deaerators utilize a spray nozzle system that atomizes feedwater into fine droplets within a steam atmosphere. Examples include:
DA Spray Model S-100 Lockwood Products: Compact design ideal for low- to medium-pressure boiler applications.
Spraymaster Deaerator Spirax Sarco: Advanced spray head ensures optimal mixing and efficient oxygen removal.
SDA Series Spray Deaerator Industrial Steam: Designed for quick start-up and steady performance under fluctuating loads.
Spray-Type DA-700 Cleaver-Brooks: Efficient oxygen removal using high-velocity spray nozzle distribution.
Spray Deaerator PDS Series Precision Boilers: Features a high-efficiency internal baffle for improved steam utilization.
The boiler deaerator market is a mature but steadily growing sector driven by the long economic life of boilers, the continuous need to prevent feedwater corrosion, and ongoing industrial and power projects particularly in Asia and Southeast Asia. With a 2024 base of USD 3,798 million and a mid-single-digit CAGR, the market offers stable, project-driven opportunities. Suppliers who can combine rigorous pressure-vessel engineering, faster packaged delivery, and digital aftermarket services are best positioned to capture growth in both large utility tenders and fragmented industrial buyers.

Investor Analysis
this report identifies market size, unit economics (price per unit, COGS, gross profit), regional demand clusters (Asia & ASEAN), leading suppliers, and prevailing trends (modularization, digital monitoring). How: investors can use these inputs to model revenue scenarios, margin sensitivity to steel/alloy price swings, and capital-expenditure profiles for manufacturing investments or acquisitions; the unit-level economics help size working capital and return metrics. Why: targeted investment into modular packaged production lines, strategic partnerships with local fabricators in Indonesia/ASEAN, or aftermarket-service platforms can accelerate payback and de-risk pipeline volatility; the relatively concentrated unit counts indicate that winning a modest number of projects or aftermarket contracts materially moves revenue for a mid-sized OEM or fabricator.
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5 Reasons to Buy This Report
To obtain a ready market-sized valuation for 2024 with growth assumptions to 2031.
To access unit-level economics (price, COGS, gross profit and margin) useful for valuation and bid pricing.
To understand regional demand nuances in Asia and ASEAN for go-to-market planning.
To benchmark competitor positioning and identify consolidation or partnership targets.
To get strategic guidance on product modularization, digital aftermarket opportunities, and production capacity planning.
5 Key Questions Answered
What was the global market size for boiler deaerators in 2024 and what CAGR is expected to 2031?
How many deaerator units were sold globally in 2024 given the unit price used in this analysis?
What are typical unit economics (COGS breakdown, factory gross profit, and margin) for a deaerator?
What are the regional demand patterns and specific opportunities in Asia and Southeast Asia?
Who are the principal manufacturers, fabricators, and suppliers that shape procurement and aftermarket dynamics?
Chapter Outline
Chapter 1: Introduces the report scope of the report, executive summary of different market segments (by region, product type, application, etc), including the market size of each market segment, future development potential, and so on. It offers a high-level view of the current state of the market and its likely evolution in the short to mid-term, and long term.
Chapter 2: key insights, key emerging trends, etc.
Chapter 3: Manufacturers competitive analysis, detailed analysis of the product manufacturers competitive landscape, price, sales and revenue market share, latest development plan, merger, and acquisition information, etc.
Chapter 4: Provides profiles of key players, introducing the basic situation of the main companies in the market in detail, including product sales, revenue, price, gross margin, product introduction, recent development, etc.
Chapter 5 & 6: Sales, revenue of the product in regional level and country level. It provides a quantitative analysis of the market size and development potential of each region and its main countries and introduces the market development, future development prospects, market space, and market size of each country in the world.
Chapter 7: Provides the analysis of various market segments by Type, covering the market size and development potential of each market segment, to help readers find the blue ocean market in different market segments.
Chapter 8: Provides the analysis of various market segments by Application, covering the market size and development potential of each market segment, to help readers find the blue ocean market in different downstream markets.
Chapter 9: Analysis of industrial chain, including the upstream and downstream of the industry.
Chapter 10: The main points and conclusions of the report.

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