This document provides guidance on specifying design, installation, and commissioning requirements for building-scale heat pump installations. It draws on experience from delivery and monitoring of Public Sector Decarbonisation Scheme (PSDS) funded projects, predominantly Air Source Heat Pump (ASHP) installations. Public sector organisations (hereafter referred to as authorities) may wish to consider these requirements when drafting their own procurement specifications.

If your council is planning or managing heat pump installations, this guide is a must-read. It demystifies the process, from initial design through to commissioning, and is packed with practical tips to help you avoid common mistakes. The focus on clear roles, robust documentation, and early stakeholder engagement will be especially valuable for teams new to heat pumps or those scaling up delivery.

The inclusion of procurement templates and real-world examples makes it easier to translate best practice into your own projects. By following these recommendations, you’ll be better equipped to deliver reliable, efficient, and resident-friendly heat pump systems – helping your authority meet its Net Zero ambitions.

Key benefits for local authority teams

• Clear guidance on heat pump projects: The document provides a step-by-step framework for the design, installation, and commissioning of heat pump systems, helping local authorities ensure projects are delivered to a high standard.
• Risk reduction: By following the outlined requirements, authorities can minimise common pitfalls such as poor system performance, resident complaints, and costly remedial works.
• Procurement support: The guide includes practical advice on specifying requirements in tenders and contracts, making it easier to procure high-quality installations.
• Quality assurance: Emphasises the importance of robust commissioning and handover processes, ensuring systems operate efficiently from day one.

Highlights from the guide

• Design stage: Stresses the need for early engagement with stakeholders, thorough site surveys, and accurate heat loss calculations.
• Build stage: Recommends clear communication between contractors, regular site inspections, and adherence to industry standards.
• Commissioning: Details the checks and documentation required before handover, including system testing, user training, and maintenance planning.
• Good practice examples: Shares case studies and lessons learned from previous local authority projects, highlighting what works well and common challenges.

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