By Liam Elmore, General Manager, Lochinvar.

The UK’s transition to low-carbon heating has rapidly moved from policy ambition to engineering reality. As heat pumps are deployed at increasing scale, industry guidance from CIBSE, including AM16 and AM17, has helped identify why some early projects failed to achieve expected performance. However, the challenge today is not a lack of guidance, but ensuring best practice is delivered consistently on site.

CIBSE has repeatedly highlighted that many performance issues stem from system design, controls and integration rather than the heat pumps themselves. Common challenges include overly complex control strategies, conservative domestic hot water design, and a gap between predicted and actual operational efficiency. These are system-level issues that can emerge when multiple stakeholders interpret and deliver projects differently.

This has led to growing interest in integrated heat pump system architectures, where hydraulics, controls, storage and operating logic are designed as a unified solution. One example is Lochinvar’s Imperium™ system, a pre-engineered commercial heat pump solution that integrates heat pumps, thermal storage, hydraulics and intelligent controls into a single architecture. By embedding proven operating strategies and reducing opportunities for unintended variation, integrated approaches can help translate design intent into more predictable outcomes.

Integrated systems are not a substitute for engineering expertise, but as the industry seeks to close the performance gap, reducing unnecessary complexity and improving consistency may be just as important as producing better guidance.

To learn more about the Imperium™ system and Lochinvar’s approach to integrated low-carbon heating, visit www.lochinvar.ltd.uk.