Heating System Commissioning

What heating system commissioning covers

Commissioning checks and fine tunes the working parts of your central heating so it performs as designed. Depending on the system and what has been changed, this typically includes:

• Checking system pressure, expansion behaviour and safe operation
• Bleeding radiators and confirming consistent heat up across the system
• Balancing radiators for even temperatures and stable flow
• Testing pumps, motorised valves and thermostatic radiator valves (TRVs)
• Verifying programmer, thermostat and zoning controls respond correctly
• Checking for leaks, airlocks, poor circulation and unusual noise
• Confirming flow and return temperatures are appropriate
• Basic water quality checks and advice on inhibitor and protection
• Identifying installation issues or component faults affecting performance

When this service is most useful

Commissioning is recommended when heating has been newly installed, extended, or significantly altered. It is also the right choice if some rooms are slow to heat, radiators stay cold at the bottom, the system is noisy, or you have repeated pressure drops. Landlords and small commercial sites often book commissioning to improve reliability and reduce call outs.

What to expect during commissioning

You will be asked how the system behaves and which areas feel underheated. Tests are then carried out at the boiler interface and across the distribution system, with adjustments made to balance flow and confirm controls operate correctly. If issues are found that need extra parts or larger remedial work, you will be told clearly what’s needed and why, before any further work is agreed.

After commissioning

You should notice more even heating, faster warm up and steadier temperatures. You will also get clear guidance on how to run your controls efficiently and what to watch for over the next few days. If further optimisation is recommended, it will be prioritised so you can decide what to do next and when.