14/08/2026
Rising energy costs continue to place pressure on manufacturers to improve efficiency without compromising productivity. While many organisations focus on investing in new equipment, significant energy savings can often be achieved by optimising the steam systems already in place.
Over time, even well-designed steam systems can become less efficient. Changes in production demands, ageing equipment and gradual wear can all contribute to increased energy consumption. The good news is that many of these issues can be identified and addressed through regular assessments and targeted improvements, helping businesses reduce energy consumption in manufacturing while improving reliability and lowering operating costs.
Why existing steam systems deserve attention
Steam is one of the most efficient methods of transferring heat, but only when the entire system is operating as intended. A single failed component or poorly optimised process can have a ripple effect across the system, increasing fuel consumption and carbon emissions, reducing process efficiency, creating health and safety issues and placing unnecessary strain on equipment.
Many manufacturing sites have evolved over decades, with equipment added, modified or repurposed as production requirements have changed. As a result, steam systems may no longer be operating as efficiently as they once did, creating hidden opportunities for improvement.
Rather than replacing equipment unnecessarily, taking a whole-system approach can help identify areas where relatively small changes deliver significant, long-term and quantifiable savings.
Start with a steam system assessment
Understanding how your steam system is performing is the first step towards identifying opportunities to improve efficiency.
A comprehensive steam system assessment can highlight issues that may not be obvious during day-to-day operation, including:
- Steam leaks
- Failed or incorrectly selected steam traps
- Poorly optimised control valves or pressure reducing valves
- Heat losses from damaged or missing insulation
- Trapped condensate or inefficient condensate recovery
- Incorrectly sequenced boilers, poor boiler control configuration or an incorrectly balanced header
- Unnecessary steam consumption
- Unrealised flash steam heat recovery opportunities
Identifying these issues early enables maintenance teams to prioritise improvements based on their potential impact on energy consumption, reliability and operational performance.
Steam traps: Small components, significant savings
Steam traps play a vital role in removing condensate while preventing the loss of live steam. However, because they operate automatically and are often installed in inaccessible locations, failures can go unnoticed for long periods.
A steam trap that fails open wastes valuable steam, increasing fuel, water and chemical consumption as well as operating costs. A trap that fails closed can reduce heat transfer, increase the risk of water hammer and affect production performance.
Regular steam trap surveys help identify failed traps quickly, allowing businesses to recover lost energy and improve overall system reliability. In many cases, repairing or replacing failed steam traps offers one of the quickest returns on investment.
Optimise steam pressure
Operating a process at a higher steam pressure than necessary is a common source of wasted energy.
Many processes only require a specific pressure to operate effectively. Supplying steam at unnecessarily high pressures increases energy consumption and places additional stress on valves, pipework and other system components.
Reviewing pressure requirements and ensuring pressure reducing stations are correctly configured can improve process stability while reducing steam demand.
Recover more condensate
Condensate contains between 20 and 25% of the total heat energy within the steam itself, but this energy can no longer be used directly by the process.
Returning hot condensate to the boiler feed system reduces the amount of fuel required to generate fresh steam, lowers water treatment costs and decreases the volume of make-up water required.
If condensate is being discharged to drain or recovery rates are lower than expected, there may be opportunities to improve system performance while reducing both energy and water consumption. In some cases, condensate must also be cooled before disposal, so increasing the percentage returned can deliver even greater savings.
Don't overlook insulation
Heat losses from uninsulated or damaged pipework, valves and fittings can have a significant impact on energy efficiency.
Insulation helps retain heat within the steam system, maintaining steam quality while improving personnel safety.
Regular inspections should include removable insulation jackets, valves, separators and other components where insulation may have been removed during maintenance and not reinstated.
Replacing damaged insulation is often a simple improvement that delivers immediate energy savings. Even where insulation is already fitted, it may have been designed for lower-temperature water applications. Correctly installed, steam-grade insulation can still offer significant savings.
Improve boilerhouse efficiency
The boilerhouse is the heart of the steam system, and even small improvements can have a noticeable impact on overall efficiency.
Opportunities may include:
- Optimising boiler sequencing.
- Reviewing boiler loading during varying production demands.
- Monitoring fuel, steam and feedwater usage.
- Reducing unnecessary losses by moving from manual to automated boiler blowdown.
- Improving combustion efficiency.
Monitoring individual boiler performance rather than relying solely on overall efficiency figures provides greater visibility of where improvements can be made.
Use data to drive continuous improvement
Modern monitoring technologies make it easier than ever to understand how a steam system is performing.
Real-time monitoring can help identify steam leaks, equipment failures and changes in operating conditions before they develop into more significant problems.
By analysing trends in steam consumption, condensate recovery and system performance, organisations can make informed decisions that support continuous improvement and long-term energy savings.
Small improvements add up
Reducing energy consumption in manufacturing doesn't always require major capital investment.
Addressing steam leaks, repairing failed steam traps, improving insulation, optimising pressure control and recovering more condensate can collectively deliver substantial steam energy savings while improving system reliability and reducing maintenance costs.
Many of these opportunities already exist within existing steam systems—they simply need to be identified.
Unlock the potential of your steam system
At Spirax Sarco, we work with manufacturers to identify hidden opportunities to improve steam system performance. From steam trap surveys and system assessments to condensate recovery, boilerhouse optimisation and digital monitoring, our specialists help businesses reduce energy consumption, improve reliability and maximise the value of their existing steam assets.
If you're looking to reduce energy consumption in manufacturing and uncover hidden steam energy savings, speak to your local Spirax Sarco engineer to arrange a steam system assessment and discover where your greatest opportunities lie.