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NAPIT Supports New Guidance on Heat Pump Installations

NAPIT Supports New Guidance on Domestic Heat Pump Installations

NAPIT are pleased to support the Heat Pump Association (HPA) in producing guidance for heat pump installers on residual current device (RCD) selection. The guidance, published today (March 31st), focuses on domestic heat pump installations.

NAPIT has collaborated with the HPA and NICEIC to develop the new resource titled Guidance for Installers on Residual Current Device Selection for Heat Pumps. It aims to assist installers in choosing the appropriate RCD for their projects.

It covers the RCD selection process, explains the different types of RCD on the market and their properties, and outlines the specific requirements and considerations to safely and robustly protect heat pump installations.

It follows a 4-step process, as well as frequently asked questions to help installers understand the various considerations. The guidance is intended to be informative for those with an interest in the subject and instructive for those with electrical competence.

NAPIT Managing Director Frank Bertie said: “Providing technical guidance to Competent Persons on the installation of renewable technologies, to ensure they perform to their optimum levels and leave consumers satisfied, is an unceasing objective for NAPIT.

“Being involved in this guidance bolsters this commitment when it comes to Heat Pumps. As a nation, we are well aware of the targets set out in front of us, and although these may feel steep, we believe these can be achieved with the correct tradespeople doing efficient installs of these technologies.”

Charlotte Lee, Chief Executive at the Heat Pump Association said: "The Heat Pump Association is dedicated to supporting installers and promoting high quality heat pump installations to improve the consumer experience.

“This new Guidance adds to the HPA’s ongoing efforts to support the sector as it scales up to meet increasing demand. It aims to simplify the RCD selection process and provide clear answers to common questions.”

To access the Guidance, visit the HPA’s technical resources page here.



Article Published: 31 March 2025

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NAPIT is a leading Government-approved membership scheme operator in the building services and fabric sector, with over 20,000 registered installers working across electrical, heating, plumbing, ventilation, microgeneration, and building fabric trades in the UK’s domestic, commercial, and industrial markets. NAPIT Certification is accredited by the United Kingdom Accreditation Service (UKAS) to ISO/IEC 17065, ensuring the highest standards of product conformity certification. Read more...


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