Summary
Adveco considers the challenges and opportunities of decarbonising the healthcare sector, and highlights the critical role hot water can play in achieving these goals.
Adveco assesses the challenge of creating sustainable healthcare buildings through the implementation of low-carbon and cost-effective systems to operate for the provision of domestic hot water (DHW) in commercial-grade settings…
The National Health Service operates one of the largest and most demanding building estates in the country, spanning hundreds of hospital sites, over 200 NHS trusts, and more than 6,000 GP practices in England alone. Across their estates, the need for reliable, resilient hot water and heating is non-negotiable, underpinning infection control, patient safety, catering, and day-to-day operations.
Yet much of this infrastructure is ageing and decreasing in efficiency with rising demand and new net-zero targets. As waiting lists remain high and services expand beyond their original design capacity, existing plant rooms are being pushed harder, often without the space, budget, or downtime for full replacement. While national programmes promise new hospitals and upgraded primary care estates, the immediate challenge lies in modernising and decarbonising hot water and heating systems. This creates an urgent need for scalable, efficient technologies that can reduce carbon and running costs while maintaining the uncompromising performance standards healthcare settings depend on.’
We recognise the critical importance of a sustainable healthcare system. The decarbonisation of the NHS is now a national priority, as the world’s first national health system to commit to reaching net zero, it has set ambitious targets to deliver net zero operation by 2040 for direct emissions (NHS Carbon Footprint) and by 2045 for emissions it can influence (NHS Carbon Footprint Plus). These commitments are not merely aspirational; they are essential for protecting public health from the impacts of climate change and ensuring the long-term viability of our healthcare infrastructure.
The NHS’s Decarbonisation Journey
The journey to decarbonise the NHS is a comprehensive undertaking, involving strategic shifts across all aspects of its operations. A significant focus is on decarbonising estates, particularly heating and hot water systems, which account for a substantial portion of direct emissions. The mandate for all NHS Trusts to have Heat Decarbonisation Plans (HDPs) in place by March 2024 highlights the urgency and commitment driving the decarbonisation of the NHS.
Key aspects of the NHS decarbonisation strategy include: Transitioning from fossil fuels, by moving away, where possible, from gas-powered systems to low-carbon alternatives. This includes adopting renewable energy, such as installing on-site solar panels and exploring power purchase agreements for renewable electricity. Efforts to improve overall energy efficiency will not only include upgrading heating, but also address lighting, ventilation systems, and enhancing building fabric with better insulation. To achieve this, the NHS intends to better leverage funding, utilising schemes like the Public Sector Decarbonisation Scheme (PSDS) to finance energy-efficient upgrades.
The Hot Water Challenge in Sustainable Healthcare: Reliability Meets Sustainability
Healthcare facilities, especially hospitals, have unique and demanding requirements for hot water. The guaranteed provision of safe and appropriately heated water is not just a convenience; it is a fundamental necessity for patient care, hygiene, and critical sterilisation processes. Historically, steam and gas-fired systems have been prevalent due to their high output capacity and perceived reliability. However, these systems are significant contributors to carbon emissions, making them incompatible with the long-term plans for the decarbonisation of the NHS.
While direct electric water heaters offer zero on-site emissions, their higher running costs can be a concern for large, continuously operating facilities. The challenge lies in finding responses that balance environmental responsibility with economic capability and, crucially, uninterrupted operational reliability.
Delivering Sustainable Hot Water Solutions for Healthcare
As experts in commercial hot water and heating systems, we are uniquely positioned to support trusts in achieving the decarbonisation of the NHS. Our approach focuses on providing balanced and strategic hot water systems that integrate low-carbon technologies, ensuring both sustainability and operational resilience.
We advocate for hybrid hot water systems that combine the strengths of various technologies. Our award-winning FUSION system integrates a storage cylinder with an electric boiler and the option of an Air Source Heat Pump (ASHP). ASHPs are highly efficient, capable of generating up to 70% of the necessary system energy as preheat, thereby significantly offsetting the energy demands and emissions of the electric boiler.
The benefits of a hybrid approach when delivering domestic hot water (DHW) to healthcare facilities are well understood. Most notably, significant carbon reduction is easily achievable, supporting NHS Net Zero targets and driving the wider decarbonisation of the NHS. Buildings also gain assured reliability since hybrid systems offer built-in redundancy and the option of extra, temporary back-up in the form of additional electric immersion, ensuring a continuous supply of critical hot water, vital for healthcare settings. This approach also aligns healthcare estates with evolving environmental regulations and sustainability standards to offer a future-proof option that supports versatile and changing planning. Beyond packaged hybrid systems, Adveco provides expertise in designing and implementing entire bespoke low-carbon hot water systems, including thermal storage optimisation, meaning all DHW needs within buildings, whether new build or existing structures requiring retrofit, can leverage these technology advantages. In addition, technologies such as solar thermal offer a truly renewable and zero-emission source of hot water, capable of significantly offsetting a building’s annual energy requirements for hot water. These systems are highly efficient, cost-effective, and require low maintenance, offering a rapid return on investment.
Partnering for a Healthier, Greener Future
The decarbonisation of the NHS estate is a complex but achievable goal. It requires a focused approach, moving beyond traditional solutions to embrace innovative, integrated systems. Adveco is committed to partnering with NHS Trusts, offering our expertise to design, supply, and support bespoke low-carbon hot water systems that meet the rigorous demands of healthcare environments. By working together, we can contribute to a healthier and more sustainable care system for generations to come.
Learn more about water heating from Adveco for healthcare projects
