Steam Thermal Solutions
Key statistics
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£853.4m Revenue (Full Year 2025)
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23.5% Adjusted operating profit margin (Full Year 2025)
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60 Operating units (31 December 2025)
Harnessing the energy of steam
We design and supply industrial and commercial steam systems, including condensate management, controls and thermal energy management products and solutions.
Steam is relatively easy to control and can transfer large energy loads in the form of heat.
We use steam across a broad range of industries, in all geographies and numerous applications, including: heating, curing, cooking, drying, cleaning, sterilising, space heating, humidifying, vacuum packing and producing hot water on demand.
We’re leading the way by combining steam technologies with our Electric Thermal Solutions Business to decarbonise the production of steam in customers’ facilities.
We’re developing a range of new, sustainable first-fit and retrofit heating solutions, as well as thermal energy storage applications to deliver more sustainable steam on demand. We have also invested to add emerging high temperature heat pump technology to our range of electrification products, to enable the recycling of waste heat to generate steam.
In a challenging market environment, STS delivered a resilient performance in 2025. Strong execution across MRO, solution-selling and Commercial Excellence initiatives continued to drive growth and positions the Business well for the future.”
Managing Director
Customer benefits
Reducing energy and water use
Using steam can save energy and reduce CO2 emissions. During oil and gas production, our steam products enable optimum steam system performance, reducing energy use.
Steam also helps to efficiently redistribute and re-use waste heat formed during the power generation process.
Improving product quality and safety
Environmentally safe and sterile, steam is used in pharmaceutical manufacturing and the healthcare industry to reduce the risk of contamination.
And it is an essential part of brewing and distilling, protecting the quality and flavour of beverages.
Improving process efficiency
Steam is an efficient energy transfer medium used in many processes, including in the food industry.
Bespoke steam system solutions made by Spirax Sarco ensure that steam drying of fragile foods, like rice, results in consistently better-quality products, saving money and increasing efficiency.
Spirax Sarco
Spirax Sarco engineers have been helping customers harness the power of steam for over a century and are supporting them to achieve their net zero and business growth goals as part of a sustainable future.
Steam can heat or sterilise almost any industrial process. That’s why it’s often the first choice in so many applications around the world, in sectors ranging from food to transport and pharmaceuticals.
With global reach, Spirax Sarco helps companies use steam in their applications and processes and meet the challenges of reducing emissions, operational costs and resources, while improving productivity, reliability and sustainability.
Product overview
- Boilerhouse
- Clean Steam Solutions
- Compressed Air Products
- Condensate Pumps
- Control Systems
- Flowmetering
- Heat Transfer Solutions
- Humidification Products
- Isolation Valves
- Pipeline Ancillaries
- Steam Traps
Gestra
Gestra is a global leader in the design and production of valves and control systems for heat and process fluid control. Founded in 1902 by Gustav F Gerdts, a young, self-taught engineer, its mission remains clear: to optimise steam and energy usage in factories, to increase operational reliability and process efficiency.
Gestra’s world-class products have many practical applications where steam is generated, distributed or used and where liquid and gaseous media flow.
Gestra’s technologies help customers make energy savings, improve operational reliability and protect the environment while its products and expertise in steam and condensate solutions help develop more sustainable, reliable and durable operations.
Product overview
- Boilerhouse
- Control valves
- Control valves for severe service applications
- Isolation valves
- Non-return check valves
- Steam traps
- Strainers
- System and packaged solutions
Learn about the impact we are making
Watch our colleagues Maria Wilson and Alessandro Zazzarelli explain how Digital is augmenting the expertise, physical services and solutions provided by our Businesses. With Steam Thermal Solutions leading the way.
From point‑in‑time
to real time…
…how STS is turning digital insight into operational improvements for customers.
Read more
From local insight to regional impact…
...how STS is capturing sales from China’s overseas investments.
From assessment to impact...
…how we are identifying tangible thermal energy savings for a global drinks brand.
From reach to results...
...how STS is boosting growth through distributor collaboration.