PSA designed the mechanical and electrical services for a new endoscopy unit extension, seamlessly integrating it with the hospital’s Grade II listed facade. Prioritising sustainability, 15% of the carbon usage was sourced from renewable sources while minimising disruption to ongoing operations. The world-class facility meets the client’s goals while preserving heritage.
CLIENT: Wrightington, Wigan & Leigh Teaching Hospitals NHSFT
VALUE: £6.4m
COMPLETED: July 2025
LOCATION: Wigan, Greater Manchester
SERVICES: Mechanical & Electrical Design
CLIENT OBJECTIVES
Due to rising demand, the trust sought to construct an impressive four-storey extension housing a new endoscopy unit.
The extension needed to integrate seamlessly with the existing Grade II listed façade. The project was located adjacent to live area, necessitating minimal disruption to existing services.
Sustainability and preserving the site’s heritage were paramount, with a requirement to source 15% of the overall carbon usage from a sustainable source.
OUR SOLUTION
Working alongside a multidisciplinary team, PSA carried out a full electrical and mechanical design for the extension. Enabling work was conducted to ensure uninterrupted hospital services during construction. Due to tight space limitations for ductwork within the new extension, extensive coordination was required using Revit modelling software.
Our design services included:
- Dry riser to all four floors
- Extend existing smoke extract system
- Low voltage distribution & switchboard
- Isolated Power Supply (IPS) and Uninterruptible Power Supply (UPS)
- Medical pendants
- Medical trunking & gases
- Data & Infrastructure
- Fire, access control and CCTV
- Air handling unit (AHU)
- Domestic water services
- Lighting & lighting controls
- Lightning protection
- Nurse call & bed head services
To achieve the client’s goal of sourcing 15% of the carbon usage from renewable sources we explored options for sustainable energy sources. Initial considerations include:
- Change electrical supplier to renewable source
- Installation of solar photovoltaic panels
- Redirection of waste heat from CHP to serve domestic water
- Change heat source to air source heat pump (ASHP)
We are exploring the option to redirect the waste heat from the site CHP, which is currently being discarded to the atmosphere, to serve the domestic hot water generation to the new extension.
OUTCOME
The endoscopy unit completed Summer 2025, provides a functional facility for the community. PSA designed the services for the new building, overcoming the constraints of limited space available for service provision. The project seamlessly integrates the extension with the hospital’s historic façade while incorporating sustainable design elements.
Images Courtesy of Carefoot
