ENERGY IN HOSPITALS & HEALTHCARE


Overcoming barriers to heat pump use


Tom Bailey explains how modern, high-temperature R290 heat pumps make healthcare decarbonisation viable without compromising legionella safety, reliability or operational simplicity.


Tom Bailey lochinvar.ltd.uk


Key account manager at Lochinvar


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ospitals and healthcare facilities sit at the sharp end of the UK’s decarbonisation challenge. They operate 24/7,


demand absolute reliability, and must meet stringent safety and compliance standards – particularly around hot water hygiene and legionella control. At the same time, NHS estates and private healthcare providers face increasingly aggressive carbon reduction targets, alongside mounting pressure on capital budgets. In 2026, decarbonising healthcare is no longer a question of if but how – and crucially, how without compromising safety or continuity of care.


High temperatures, low carbon: the false compromise One of the most persistent barriers to adopting heat pumps in healthcare environments has been a perceived inability to achieve and maintain the high water temperatures required for legionella prevention. Many estates teams still assume that only complex, high-cost CO₂ systems can meet the demands of HTM 0401. That assumption is now outdated. Modern R290 (propane) air source heat pumps are capable of delivering flow temperatures up to 75°C, making them suitable for pasteurisation cycles, safe hot water storage, and stable distribution temperatures across complex estates. This capability directly challenges the long-held belief that decarbonisation must come at the expense of compliance or performance. The implication for healthcare


estates is significant: high- temperature domestic hot water can now be delivered without fossil fuels, excessive system complexity, or disproportionate capital cost.


Simplicity as a safety feature In hospitals, system complexity isn’t just an engineering issue, it’s an operational risk. Additional pumps,


EIBI | MAY 2026


vessels, high-pressure components and complex hydraulics introduce more points of failure, higher maintenance burdens, and greater reliance on specialist intervention. Simpler system architectures based on modern R290 heat pump solutions reduce these risks. Fewer components mean: ● Easier maintenance ● Improved longterm reliability ● Better resilience during peak demand ● Lower installation and lifecycle costs For estates teams already stretched


across ageing infrastructure, simplicity directly supports compliance, uptime, and peace of mind.


Control is as important as temperature Achieving high temperatures is only part of the solution. Maintaining them consistently, visibly, and verifiably is what safeguards patients and staff. Advanced system control platforms


now allow estates teams to automate high-temperature cycles, monitor performance in real time, and maintain stable tank stratification without reliance on complex BMS reprogramming. This level of control supports: ● Reliable legionella risk mitigation ● Clear operational oversight ● Faster response to anomalies ● Confidence during audits and inspections In effect, digital system intelligence


has become as important as mechanical performance in modern healthcare environments.


Funding pressure While government-backed funding has supported many early decarbonisation projects, the landscape is changing. Popular funding routes including Salix schemes are increasingly competitive, intermittently closed, or subject to tighter eligibility. This makes strategic technology


selection more important than ever. Estates teams need solutions that: ● Deliver meaningful carbon reduction ● Align with realistic capital constraints ● Avoid over-engineering where it


isn’t needed ● Offer scalable options across large, mixed estates In some cases, full decarbonisation


may be the right choice. In others, hybrid approaches where low-carbon systems carry the majority of demand, supported by efficient legacy plant, can provide a pragmatic route forward while budgets and energy prices remain volatile.


One estate, many use cases Healthcare estates are not monolithic. Acute hospitals, community hospitals, care homes, GP surgeries, labs, laundries and support buildings all have distinct heating and hot water profiles. What works for a high-demand hospital block may be entirely unsuitable for a small support building and over-specification can be as wasteful as underperformance. Targeted solutions, including


internal heat pump water heaters for support buildings, can provide a cost- effective decarbonisation route where large external systems aren’t viable. In some cases, these systems can be installed with minimal disruption, limited electrical upgrades, and supported by in-house maintenance teams already on site.


The bigger picture Decarbonising healthcare is a technical challenge, but it’s also a strategic one. Technology choices made today will shape operational


resilience, compliance risk, and carbon performance for decades. The most successful estates


strategies are those grounded in: ● A clear understanding of regulatory requirements ● Realistic assessments of capital and operational cost ● Proven, healthcare-specific applications ● Technologies designed for reliability, not experimentation


Download the guide Decarbonising hospitals and healthcare facilities is too complex and too critical to rely on assumptions or generic solutions. Lochinvar’s free 2026 guide, Heat


Pumps for Decarbonising Hospitals & Healthcare Facilities, provides practical, healthcare-specific insight for estates teams, energy managers and engineers, including: ● Proven strategies for compliant high-temperature hot water using heat pumps ● Guidance on balancing carbon reduction, capital cost and operational risk ● Real-world healthcare case studies and estate-level solutions ● Design, control and legionella management considerations aligned with HTM 04-01 To access Lochinvar’s


guide to decarbonising hospitals and healthcare facilities, please scan the QR code. ■


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