Job Description

Mechanical Site Manager (HVAC / Building Services)

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: 25–30 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. 25–30 operatives across:

HVRF installation teams

Ventilation ductwork teams

Plumbing & pipefitting teams

Oversee installation of:

AHUs (Air Handling Units)

HVRF systems

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:

Plumbing & pipefitting

Heating systems

Ventilation / ductwork

HVRFinstallation

Previous experience working on subcontractor packages within main contractor environments

Exposure to commercial or large residential developments (ideally £1m+ mechanical 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 pressureIf you’re a Mechanical Site Manager who can juggle HVAC, plumbing, and ventilation

Drop me a line: (url removed)