St Laurence Primary: Whole School Decarbonisation Project



Chorley St Laurence primary school was submitted as part of a group SALIX Public Sector Decarbonisation Scheme (PSDS) bid with the support of Mantis Energy of which 15+ schools were provided with grant funding. Due to the substantial land available at the school premises it was agreed a Ground Source Heat Pump (GSHP) would be the most beneficial option for the buildings heating requirements.

The following works have been carried out:

Decarbonisation Work: A Heat Decarbonisation Plan was produced to assess how public sector funding could be accessed to decarbonise a number schools

Intrusive Inspections Further investigative work such as air pressure testing, cavity borescope inspections, roof sampling, utility upgrade quotations and detailed cost planning were completed

Mechanical & Electrical Design Work: After successfully receiving Public Sector Decarbonisation Scheme (PSDS) grant funding the project commenced and Mantis Energy became an integral part of the project design team. Our team started straight away on detailed design work of the existing heating distribution system, ground source heat pump plant room design and external ground loop system. Construction tenders were then issued to all specialist contractors to select the best team to complete the works.

Design Team

Building Consultants & Project Managers: Cassidy & Ashton

Mantis Energy: Energy Consultants and Mechanical & Electrical Designers

Ground Source Heat Pump Contractors: Niche Energy


  • Detailed Site Surveys
  • Energy Modelling & Analysis
  • Heat Decarbonisation Plan (HDP)
  • Air Pressure Testing & Smoke Leak Detection
  • Borescope Cavity Wall Inspections
  • Roof Sampling & Moisture Analysis
  • Utility Load Calculations
  • Utility Upgrade Quotations
  • Heating Distribution Investigations
  • Heating Distribution Design & Schematics
  • Ground Source Heat Pump (GSHP) Design
  • Heat Pump Plant Room Design
  • External Ground Loop Design
  • External Manifold Flow & Return Design