Mechanical Site Manager (HVAC / Building Services)
Read the overview of this opportunity to understand what skills, including and relevant soft skills and software package proficiencies, are required.
Location: Bristol City Centre
Contract Type: 12-month freelance / contract
Day Rate: £275 £290 per day
Project Value: £3m Mechanical Package
Reporting To: Visiting Project Director
Team Size: 2530 operatives (Plumbing, Ventilation, AC teams)
Role Overview
We are seeking an experienced Mechanical Site Manager to oversee the delivery of a £3m building services package on a large commercial project in Bristol City Centre.
You will act as the on-site lead for all mechanical works, coordinating and managing subcontract labour across HVRF, plumbing, ventilation, and associated building services disciplines. The role sits within a subcontractor environment and requires strong site leadership, coordination, and delivery focus.
You will be responsible for managing multiple trade gangs, ensuring programme adherence, quality control, health & safety compliance, and smooth coordination with the main contractor and visiting project director.
Key Responsibilities
* Lead day-to-day site delivery of all mechanical building services works
* Manage and coordinate approx. 2530 operatives across:
o HVRF installation teams
o Ventilation ductwork teams
o Plumbing & pipefitting teams
* Oversee installation of:
o AHUs (Air Handling Units)
o HVRF systems
o Domestic Hot Water (DHW) systems
* Ensure works are delivered in line with programme, drawings, and specifications
* Attend and contribute to site meetings with main contractor and client team
* Manage subcontract labour performance, sequencing, and productivity
* Enforce strict Health & Safety compliance on site
* Complete site reporting, progress updates, and coordination documentation
* Coordinate materials, logistics, and site deliveries
* Support commissioning readiness and handover processes
Required Experience
* Proven experience as a Mechanical Site Manager on large-scale building services projects
* Strong background in:
o Plumbing & pipefitting
o Heating systems
o Ventilation / ductwork
o HVRFinstallation
* Previous experience working on subcontractor packages within main contractor environments
* Exposure to commercial or large residential developments (ideally £1m+ mechanical xsngvjr packages)
* Strong understanding of site coordination, sequencing, and trade management
* Experience working with AHUs, HVRF systems, and DHW systems
Essential Certifications
* SMSTS (Site Management Safety Training Scheme)
* CSCS Card (Black or Gold preferred)
* Valid First Aid at Work
Key Competencies
* Strong leadership of multiple trade gangs
* Ability to read and interpret mechanical drawings
* Commercial awareness of programme-driven delivery
* Confident reporting into senior project leadership
* Strong H&S enforcement mindset
* Calm, organised, and delivery-focused under pressure
If youre a Mechanical Site Manager who can juggle HVAC, plumbing, and ventilation
Drop me a line: