You have had your air source heat pump installed, the pipework is connected, and the outdoor unit is sitting neatly in position. But the job is not finished yet. Before your new heating system is ready to use, it needs to go through a critical final step known as commissioning.
At Air To Heat, commissioning is something we take seriously on every single project. It is the process that separates a good installation from a great one, and it plays a direct role in how well your system performs for years to come.
What is Heat Pump Commissioning?
Commissioning is a series of checks and adjustments carried out once the physical installation is complete. It ensures that your air source heat pump is operating correctly, safely and at peak efficiency before it is handed over to you.
This is not a quick visual inspection. It involves testing refrigerant pressures, verifying flow temperatures, checking electrical connections, calibrating controls and confirming that the system delivers heating and hot water as designed.
Why Does Commissioning Matter?
An air source heat pump is only as good as its setup. Even a premium unit from manufacturers like Grant or Vaillant will underperform if the system is not properly commissioned. Poor commissioning can lead to higher energy bills, uneven heating, excessive noise and reduced lifespan of the equipment.
Commissioning also affects your eligibility for government incentives. Under the Boiler Upgrade Scheme, systems must be installed and commissioned by an MCS certified installer to qualify for the £7,500 grant. Without proper commissioning records, you risk losing access to this funding.
What Happens During Commissioning?
Our engineers follow a structured commissioning process on every project. This typically includes:
- Checking refrigerant charge levels to confirm they match manufacturer specifications
- Setting and verifying flow temperatures for radiators or underfloor heating
- Testing the heat pump against the hot water cylinder to ensure reliable domestic hot water delivery
- Running the system through its heating cycles and monitoring performance
- Programming controls, timers and weather compensation settings
- Recording all commissioning data on the MCS certificate
Your System, Set Up Properly from Day One
At Air To Heat, we never cut corners on commissioning. Our engineers are trained and accredited by both Grant UK and Vaillant, and every system we install is commissioned to full MCS standards. We also walk you through how the controls work so you feel confident managing your heating from the first day.
Commissioning is the final step in our five-stage installation process, and it is what gives you the confidence that your investment is protected, your energy bills will reduce, and your home is heated efficiently all year round.
If you are considering an air source heat pump for your home, get in touch with us today or call 0208 936 7639 to book a free consultation.
