Boiler Design, Installation and Commissioning
When it comes to urgent, high-risk or large-scale works on gas, water, steam, oil or compressed air systems, we are the go to supplier for commercial boiler design, installation and commissioning. Our engineers are fully equipped to manage complex installations, upgrades and system modifications under extreme pressure conditions, safely, efficiently and with minimal downtime. We deliver commercial and industrial mechanical solutions across East Anglia, North London and Kent, working for borough and county councils, public sector facilities and private clients operating critical infrastructure.
Recent Project: Gas Infrastructure Upgrade
Our planned remedial works and upgrade services ensure the safety, compliance and performance of vital building systems. We handle both proactive and reactive upgrades, including:
Gas mains and high-pressure pipeline installations
Steam and condensate systems
Compressed air and vacuum lines
Water and oil supply infrastructure
Plant room upgrades and refits
Commercial heating and hot water systems
Ventilation, extraction and air handling systems
Boiler replacements, flue installations and system balancing
We take responsibility for every stage of the project, from initial investigation and design through to installation, testing and certification.
Example of a Planned Remedial Project
In a recent project, our engineers upgraded a major site’s gas infrastructure by installing a 6-inch bypass line to improve efficiency and simplify maintenance.
To prevent operational disruption, the system was prefabricated off-site and installed over a single weekend. The bypass design now allows the main gas system to operate at reduced demand without booster assistance, cutting energy use and streamlining ongoing maintenance.
Key aspects of this project included:
- Full gas purge using purge fan and flare stack to ensure safe working conditions
- Off-site fabrication of pipework, valves and purge points for precision and speed
- Controlled cutting into existing pipework, verified as gas-free before works began
- Coordination with the building’s maintenance team to maintain safety and cleanliness within a listed environment
The upgrade was completed ahead of schedule, without disruption, and has improved both system efficiency and long-term maintainability.
Planning and Preparation
Every remedial or upgrade project begins with a detailed assessment and site survey. Our engineers measure and evaluate existing systems to develop a tailored solution that improves efficiency, maintainability and safety.
Where possible, we prefabricate pipework and assemblies in our in-house hot works facility, allowing us to complete installations quickly on-site. This controlled approach minimises downtime and ensures quality workmanship throughout
Safety and Compliance
Safety is at the core of every Olympus project. All gas and mechanical systems are installed and tested to Gas Safe, OFTEC and Building Regulations standards.
Our engineers are trained in live system work, enabling them to handle high-pressure environments such as gas mains, steam lines and compressed air networks with full compliance and control. Each installation is supported by detailed method statements, risk assessments and certification on completion.
Working Across All Building Types
Olympus Mechanical Services provides planned remedial and upgrade works for:
- Schools and educational institutions
- Council buildings and municipal offices
- Sports centres, theatres and leisure complexes
- Churches, heritage and listed properties
- Community lodges, park buildings and public facilities
- Workshops and warehouses
We have built strong relationships with local authority maintenance teams and understand the operational constraints within heritage and occupied buildings. Every project is executed with care, cleanliness and respect for the environment we are working in.
From Emergency Response to Planned Upgrades
Whether you require an emergency bypass installation, a planned pipework upgrade, or a system modification to improve energy performance, Olympus delivers full technical control from design through to commissioning.
We provide:
- Risk assessment and design consultation
- Prefabrication of components
- Controlled isolation and system purging
- On-site installation and testing
- Handover documentation and compliance certification
This approach ensures that clients remain compliant, operational and safe throughout every stage of the works.
Why Choose Olympus?
Proven success on high-risk, high-pressure mechanical projects
Full in-house capability for design, fabrication and installation
Trained engineers qualified to work under live system and confined-space conditions
Reputation for delivering clean, efficient work in listed and high-profile buildings
Regional coverage across East Anglia, North London and Kent
A trusted partner for borough and county councils, facilities managers and estate teams
Let’s Get Started
If you are planning an upgrade, bypass or remedial improvement to your gas, water, steam or compressed air systems, contact Olympus Mechanical Services today. We will assess your current installation and deliver a safe, efficient and fully compliant upgrade solution that protects your operation and infrastructure.

