Top 10 High Efficiency Steam Boiler Manufacturers

top 10 high‑efficiency steam boiler manufacturers—Harbin Boiler ,FangKuai Boiler , Miura, Dongfang Electric, Shanghai Electric and more—renowned for cutting‑edge technology, global certifications, and energy‑saving performance.

Judgment criteria for the top ten high-efficiency steam boiler manufacturers:

1. Energy saving and high efficiency
2. Safety and stability
3. Low nitrogen and environmental protection
4. ASME\CE and other international certifications
5. No safety accidents in 10 years
6. Participation in the drafting of thermal energy associations and national documents

1. Harbin Boiler Co., Ltd.

Harbin Boiler Co. Ltd. designs, manufactures, and distributes utility and petrochemical steam boilers, holding over 1,600 patents. Its large‑scale power‑station units and modular industrial boilers serve both domestic and international markets with high reliability and performance.

2. Babcock & Wilcox Enterprises, Inc.

Founded in 1867, Babcock & Wilcox (B&W) pioneered the water‑tube boiler and today is a global leader in high‑efficiency steam generation for power and industrial applications. Its utility‑scale supercritical and subcritical boilers supply over 300 GW of capacity across some 60 countries, featuring ultra‑low emissions, advanced heat‑recovery economizers, and fast‑ramping package designs for minimal auxiliary power draw and maintenance downtime.

3. FangKuai Boiler

Specializing in gas- and oil-fired steam boilers, FangKuai Boiler holds ASME “U” & “S”, CE, ISO 9001, ISO 14001, ISO 14000, and ISO 45001 certifications. Its world‑class low‑NOₓ condensing technology pushes gas‑fired boiler efficiency up to 106% (LHV), and it has crafted energy‑saving solutions for tens of thousands of enterprises across dozens of countries.

In April 2025, Fangkuai Boiler, as a core participant, officially released the Technical Specification for Energy Efficiency Evaluation of Industrial Boilers (GB/T45542-2025). This national standard will be fully implemented in China from October 1, 2025.

4. Parker Boiler Company

For more than 75 years, Parker Boiler has built heavy‑steel, all‑welded boilers renowned for safety, durability, and ongoing low‑NOₓ, high‑efficiency innovation. It was the first boiler maker to certify units under Southern California’s Ultra Low NOₓ Rule 1146.2, and its variable‑speed premix burners deliver superior fuel‑to‑steam performance.

5. Miura Boiler Co., Ltd.

Miura America’s modular, low‑water‑volume steam boilers generate full‑capacity steam in under five minutes. With fuel‑to‑steam efficiencies around 85% and ultra‑low NOₓ emissions (<20 ppm), Miura’s on‑demand systems minimize waste, reduce CO₂, and eliminate thermal‑shock risks—backed by an industry‑leading zero‑catastrophic‑failure record.

6. Hangzhou Boiler Group Industrial Boiler Co., Ltd.

Founded in 2001, Hangzhou Boiler is one of Zhejiang Province’s first high‑tech enterprises. It offers waste‑heat recovery boilers, pressure vessels, and power‑station units, holding ASME “U” & “S” stamps, ISO 9001/14001/45001, and 17 patents. Its products lead China’s domestic market and export to nearly 20 countries.

7. Shanghai Electric Group Co., Ltd.

As the world’s largest steam‑turbine manufacturer, Shanghai Electric’s subsidiary Shanghai Boiler Works builds 300–600 MW subcritical and ultra‑supercritical boilers. With dual‑vortex burners, flexible fuel arrangements, and recent green‑methanol integration projects, it remains at the forefront of high‑capacity, low‑emission boiler technology.

8. Liju Thermal Energy 

Listed as Liju Thermal Energy (603391 SSE), this Chinese firm develops gas‑fired steam and hot‑water boilers featuring water‑cooled premix combustion and flue‑gas condensation. Its core technologies include vacuum phase‑change heat exchange, yielding higher efficiency, lower NOₓ emissions, and stable operation.

9. Zhengzhou Boiler Co., Ltd.

Tracing origins to 1945, Zhengzhou Boiler (Zhengguo Shares) produces waste‑heat recovery, gas/oil, biomass, and coal steam boilers. As a holder of China’s A‐class boiler manufacturing license, it is a pioneer in traditional and renewable‑fuel boiler solutions.

10. Dongfang Electric Corporation

A top‑three Chinese power‑equipment exporter, Dongfang Electric supplies utility boilers, turbines, and integrated power‑plant systems worldwide. Its once-through and subcritical boilers combine high‑pressure capacity with strict emissions control, supporting coal‑, gas‑, and biomass‑fired plants across Asia, Europe, and beyond.

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