NATIONWIDE COMMERCIAL HEATING EXPERTS
Commercial Heating & Plumbing





COMMERCIAL HEATING & PLUMBING
Testing, Purging & Commissioning
Before any commercial gas system can be safely operated, it must undergo rigorous testing, purging, and commissioning to fully comply with UK regulations and industry standards. These final stages are critical to the safety, efficiency, and certification of any new or modified gas installation.

Gas Tightness Testing
Ensuring Leak-Free and Stable Gas Systems
Gas tightness testing is essential for ensuring the integrity and safety of your gas system. We carry out initial and final tightness tests on all new and existing gas pipework to ensure the system is leak-free and stable under pressure.
Tightness Testing Includes...
- Low and medium pressure testing
- Strength testing of new pipework
- Leak detection with manometers or electronic detectors
- Documentation in line with IGEM/UP/1A & Gas Safety (Installation & Use) Regs

Purging of Gas Pipework
Professional Gas Purging for Compliance and Efficiency
Gas purging is essential when introducing gas into a new system or decommissioning an old one. This prevents the build-up of air/gas mixtures that could lead to dangerous ignition.
We offer...
- Pre-commissioning purging (air out, gas in)
- Decommissioning purging (gas out, air/inert gas in)
- Inert gas purging using nitrogen where required
- Controlled purging of both large and small bore pipework

System Commissioning
Ensuring Safe & Efficient Gas System Operation
Once your gas system passes all safety checks, we complete the commissioning process to guarantee optimal performance and compliance with regulations. Our experts verify key components, conduct final tests, and fine-tune appliance settings to ensure smooth operation from day one.
This Includes...
- Verifying appliance settings and performance
- Testing gas supply pressures at appliances
- Checking safety devices, interlocks, and ventilation integration
- Recording combustion readings (if applicable)
- Setting up controls and programming schedules (if required)

Certification & Documentation
Documentation for Compliance & Assurance
All works are professionally recorded, ensuring full transparency and compliance with industry standards. Our Gas Safe Registered engineers provide detailed reports and certification, giving you the necessary paperwork for regulatory, insurance, and safety purposes.
You’ll Recieve...
- Test certificates
- Commissioning reports
- Purge records
- Gas safety compliance paperwork for insurance and regulatory bodies
GAS TESTING, PURGING & COMMISSIONING
Why is it so Important?
Without proper testing and commissioning, even a professionally installed gas system can pose serious safety risks. Our comprehensive service ensures peace of mind, protects your staff and customers, and keeps your business fully compliant with health and safety regulations.
Frequently Asked Questions
Gas tightness testing ensures your pipework and connections are completely sealed and free from leaks. It confirms that the gas system can safely hold pressure before being used or reconnected to appliances.
Purging is needed whenever gas is introduced into a new system or removed from an existing one. It eliminates potentially explosive air-gas mixtures and ensures a safe transition between commissioning or decommissioning stages.
Commissioning includes checking appliance settings, verifying supply pressures, testing safety devices, and confirming that the system operates efficiently and safely in line with regulations.
Only qualified and Gas Safe Registered engineers are legally allowed to perform gas testing, purging, and commissioning. They ensure all procedures meet IGEM and Gas Safety (Installation & Use) Regulations.
Yes, all work is fully documented. You’ll receive test certificates, commissioning records, and gas safety documentation suitable for insurance and compliance purposes.
It’s recommended that commercial gas installations are tested and inspected annually or whenever modifications, extensions, or repairs are made to the system.
We provide commercial gas testing and commissioning for a wide range of premises, including factories, warehouses, retail units, schools, offices, and hospitality venues.
Quick heat-up times, energy efficiency, low maintenance, targeted comfort, and flexible installation options tailored to your building’s layout and usage patterns.