What You Need to Know When Choosing an Industrial Boiler from 2026 Onward

Did you know that from 2026 onward, many industrial boiler systems may face increasing pressure related to environmental compliance, operating costs, and production reliability?

In many manufacturing facilities, boilers are not only steam-generating equipment but also one of the largest sources of concentrated emissions. If a boiler system fails to meet updated environmental requirements or generates steam at an excessively high cost, businesses may face expensive upgrades, production interruptions, and reduced competitiveness.

So, what factors should companies consider when investing in a boiler system from 2026 onward? In this article, DIVI Group examines the three most critical aspects - environmental compliance, steam production costs, and operational stability - to help manufacturers make informed long-term investment decisions.

I. Why Will Boiler Selection Become More Important from 2026 Onward?

In the past, many companies selected industrial boilers based primarily on:

• Required steam capacity 
• Low initial investment cost 
• Fast installation and commissioning 

However, beginning in 2026, environmental regulations and operational efficiency requirements are expected to become significantly more demanding.

An unsuitable boiler system may result in:

• Non-compliant emissions 
• High fuel consumption 
• Increased maintenance costs 
• Production downtime 
• Expensive future retrofit projects 

For this reason, boiler selection should be evaluated from a long-term operational perspective rather than focusing solely on initial purchase cost.

II. Issue #1 – Environmental Compliance

Since July 1, 2025, QCVN 19:2024/BTNMT has become the applicable emission standard for newly approved industrial projects in Vietnam.

Compared with previous regulations, several emission limits have been significantly reduced - particularly for total particulate matter and carbon monoxide (CO) - in many cases by approximately 30–40%.

As a result, technical requirements for new boiler installations have become considerably stricter.

Another important change is that emission concentrations are now evaluated based on standardized oxygen reference conditions. This means that simply increasing excess air to dilute flue gas is no longer an acceptable compliance strategy.

If combustion is not properly controlled:

• CO emissions may remain high 
• Dust emissions may exceed permitted limits 
• Environmental compliance risks may increase 

Many companies still focus primarily on steam capacity and initial investment cost while overlooking future environmental requirements. As a result, they may be forced to retrofit combustion systems, upgrade dust collection equipment, or modify control systems after only a few years of operation.

QCVN 19:2024 BTNMT will apply to industrial boiler systems from 2026.

1. Boiler Technologies with Advantages from 2026 Onward 

Technologies with stable and well-controlled combustion will have a greater advantage in meeting new environmental standards.

Biomass Fluidized Bed Boilers

• Suitable for relatively uniform biomass fuels 
• Better combustion control 
• Lower potential CO emissions 

Liquid Fuel and Gas-Fired Boilers

Including:

• Diesel
• LPG
• CNG
• LNG

These systems offer highly stable combustion and simplified combustion control.

Electric Steam Boilers

Electric boilers are an attractive option for facilities operating in regions with strict environmental requirements because they produce no direct on-site emissions.

Boiler technologies capable of controlling emissions and meeting environmental standards will be available from 2026.

2. Boiler Dust Collection and Flue Gas Treatment Systems

A standard boiler dust collection system typically consists of:

• Primary settling chamber 
• High-efficiency cyclone separator 
• Baghouse filter or electrostatic precipitator (ESP) 

In special applications, a wet scrubbing stage may also be added to further improve emission control performance.

The final configuration depends on several factors, including plant location, boiler capacity, fuel type, and local environmental requirements.

For facilities operating in environmentally sensitive areas, investing in a properly designed flue gas treatment system from the beginning is usually more cost-effective than implementing upgrades after commissioning. 

3. How Does Fuel Moisture Affect Boiler Performance?

Fuel moisture content has a direct impact on:

• Combustion temperature 
• Carbon monoxide (CO) emissions 
• Boiler efficiency 

For many biomass-fired boiler technologies, fuel moisture should ideally be maintained below 40–45%.

When moisture levels become excessive:

• Furnace temperature decreases 
• CO emissions increase 
• Fuel consumption rises 
• Overall boiler efficiency declines 

High fuel moisture is one of the most common reasons industrial boilers struggle to meet modern emission standards.

Related Reading: Solutions for High CO Emissions in Fixed Grate Boilers

4. Combustion Automation and Advanced Control Systems

Modern boiler systems should be equipped with PLC or SCADA-based automation systems to:

• Regulate fuel feeding rates 
• Adjust combustion air according to load demand 
• Improve combustion control accuracy 

When combustion is properly controlled:

• CO emissions remain within acceptable limits 
• Boiler efficiency remains stable 
• Load fluctuations are minimized 

In real-world manufacturing environments, steam demand constantly changes throughout the production process. If fuel feeding and combustion air systems do not automatically respond to these changes, stable combustion becomes difficult to maintain. 

The result may include:

• Steam pressure fluctuations 
• Higher CO emissions 
• Increased fuel consumption 
• Reduced operating efficiency

If your company is planning to invest in a new boiler system or upgrade an existing one to comply with future environmental requirements, DIVI can assist with technology evaluation, emission assessment, and customized engineering solutions tailored to your plant conditions.

Technical Consultation Hotline: +84 942 488 818

III. Issue #2 – Steam Production Costs

Many companies focus primarily on the purchase price of a boiler.

In reality, however, the initial investment represents only a small portion of the total lifecycle cost of the system.

The majority of expenses occur during operation and typically include:

• Fuel costs 
• Operating labor 
• Maintenance expenses 
• Production downtime 
• Unexpected repair costs 

For this reason, boiler technology should be evaluated based on Total Cost of Ownership rather than initial capital expenditure alone.

Comparing Steam Production Costs by Fuel Type

Liquid and Gaseous Fuels

Advantages:

• Clean combustion 
• Easy combustion control 
• Lower emissions 

Disadvantages: Higher steam production costs

Imported Coal and Biomass Fuels

Advantages: Significantly lower steam generation costs 

Typical fuels include: Wood chips, Rice husk, Sawdust, Cashew shell residue

Biomass Pellets

Advantages:

• Consistent fuel quality 
• Easier combustion control 
• Suitable for automated fuel handling systems

Disadvantages: Fuel costs are typically moderate compared to other biomass fuels

The Most Important Factor Is Not Choosing the Cheapest Fuel

The most important consideration is not simply choosing the cheapest fuel available.

Instead, companies should focus on:

• Fuel quality control 
• Moisture management 
• Proper fuel storage practices 

Fuel that is properly stored and protected from moisture can significantly reduce fuel consumption while maintaining stable steam production costs over the long term.

IV. Issue #3 – Boiler Reliability and Operational Stability

Boiler reliability depends not only on combustion technology but also on system design, equipment selection, and the actual fuel conditions encountered during operation.

A stable steam generation system helps:

• Minimize unplanned shutdowns 
• Maintain consistent steam quality 
• Reduce equipment failures 
• Ensure uninterrupted production 
• Lower unexpected maintenance costs

In many cases, operational problems are caused not by the boiler technology itself but by improper equipment selection or insufficient consideration of real operating conditions.

1. Designing with Appropriate Safety Margins

At DIVI, equipment is selected based on engineering safety principles and appropriate design margins.

For example, if a boiler normally operates at 12 bar, the design pressure is typically calculated at least 20% higher than the operating pressure.

This approach allows equipment to operate below its maximum stress limits, helping to extend service life and reduce the risk of failures. 

2. Selecting the Right Equipment

Valves and boiler accessories should be selected according to:

• Operating pressure 
• Operating temperature 
• Installation location 
• Actual system requirements

Common pressure ratings include:

• PN25
• PN40

The appropriate rating depends on the specific operating conditions and installation requirements.

Proper equipment selection contributes significantly to long-term reliability by reducing leakage risks, equipment failures, and performance degradation.

3. Real Fuel Conditions in Vietnam

Vietnam's climate is characterized by:

• High temperatures 
• High humidity 
• Frequent rainfall 

As a result, biomass fuels often contain significantly higher moisture levels than those found in many temperate countries.

These conditions directly affect:

• Combustion efficiency 
• CO emissions 
• Fuel consumption 
• Operational stability 

When selecting or importing a boiler system, companies should evaluate how well the technology adapts to actual fuel conditions in Vietnam rather than relying solely on catalog specifications or laboratory test data.

V. Comparison of Common Fluidized Bed Boiler Designs

Today, three main fluidized bed boiler configurations are commonly found in the industrial market:

1. Water-Tube and Fire-Tube Combination Boiler

Advantages:

• Easy tube replacement 
• Convenient maintenance 
• Relatively low repair costs

Disadvantages:

• Requires frequent tube cleaning 
• Ash deposits can accumulate inside the tube bank 

2. Two-Drum Water-Tube Boiler

Advantages:

• Robust construction 
• High durability 
• Suitable for long-term industrial operation 

Disadvantages: Damage to convection sections may require larger repair work on entire assemblies

3. Single-Drum Water-Tube Boiler

Advantages:

• Faster steam generation 
• Lower water inventory 
• Rapid response to load fluctuations

Disadvantages:

• Requires stricter feedwater quality control 
• Proper blowdown procedures are essential 

No boiler configuration is universally superior.

The best choice depends on:

• Steam demand 
• Available fuel types 
• Operating conditions 
• Maintenance capabilities of the facility 

Selecting the right design for the actual application is more important than choosing the most advanced technology available

Three common types of fluidized bed boiler construction

VI. Boiler Selection Checklist for 2026 and Beyond

VII. Key Considerations When Selecting an Industrial Boiler from 2026 Onward

• Environmental compliance will become one of the most important factors when investing in boiler systems in the coming years. 
• Boiler selection should not be based solely on initial investment costs. 
• Fuel expenses throughout the boiler lifecycle often exceed the equipment purchase cost many times over. 
• Fuel moisture directly affects combustion efficiency, CO emissions, and steam production costs. 
• Automated control systems help maintain stable combustion and support compliance with increasingly strict environmental regulations. 
• The best boiler technology is not necessarily the most advanced one, but the one that best matches the plant’s fuel conditions and operational requirements.

VIII. FAQ - Frequently Asked Questions 

1. Will Existing Boilers Need to Be Replaced After 2026?

No. However, if an existing boiler system does not comply with updated environmental regulations, modifications or upgrades may be required to maintain compliance and continue operation.

2. What Are the Advantages of Fluidized Bed Boilers? 

Fluidized bed boilers can utilize a wide variety of fuels while providing superior combustion control.
They are particularly suitable for biomass fuels with higher moisture content or varying fuel quality.

3. What Is the Recommended Fuel Moisture Content? 

Lower fuel moisture is generally better.
For most biomass applications, moisture content should ideally remain below 40%

4. Should You Upgrade an Existing Boiler or Invest in a New System? 

If the existing boiler remains structurally sound and meets safety requirements, upgrading the combustion chamber, fuel feeding system, or emission control equipment may provide a cost-effective solution.
However, for aging systems that no longer meet environmental or operational requirements, investing in a new boiler system is often the more reliable and economical long-term option.

5. Why Shouldn't Boiler Selection Be Based Solely on Initial Investment Cost?

The purchase price represents only a fraction of the total lifecycle cost of a boiler system.
Selecting an unsuitable technology may result in additional expenses such as:

• Dust collection system upgrades 
• Combustion chamber modifications 
• Control system replacements 
• Other engineering improvements 

In many cases, these future costs far exceed the initial savings achieved by selecting a lower-cost boiler.

IX. Conclusion

From 2026 onward, selecting an industrial boiler is no longer simply a matter of choosing steam-generating equipment.

Companies should evaluate the complete operating picture, including:

• Environmental compliance 
• Fuel availability and quality 
• Steam production costs 
• Long-term operational reliability 

A properly selected boiler system can significantly reduce:

• Future retrofit costs 
• Fuel consumption 
• Operational risks 
• Production interruptions 

When planning a new boiler investment or system upgrade, it is essential to consider the entire lifecycle cost rather than focusing only on the initial capital expenditure.

Need Expert Advice on Boiler Selection or Boiler Upgrades? 

If your facility is experiencing challenges such as:

• Non-compliant emissions 
• High fuel consumption 
• Unstable boiler operation 
• The need to comply with QCVN 19:2024/BTNMT 

DIVI Group can provide site assessments, technical evaluations, and customized engineering solutions tailored to your plant’s operating conditions.

Technical Consultation Hotline: +84 942 488 818