Heat Pump Paperwork: Certificates, warranties and handover

Once a heat pump has been commissioned, the paperwork is just as useful as the equipment itself. A clear handover pack helps you understand how the system should operate, maintain it correctly and provide useful evidence if you sell your home or need future servicing.

Knowing what to expect also makes it easier to spot missing information. Here is a straightforward guide to commissioning records, certificates, warranties and the practical details that should stay with your property.

What commissioning information should include

Commissioning is the process of checking that the heat pump and connected heating controls are operating as intended. The engineer should record the system’s key settings and performance information, rather than simply confirming that the power is on.

This may include the design and actual flow temperatures, the return temperature and the delta-T. Delta-T is the difference between the flow and return temperatures, and it can help indicate whether heat is being transferred around the system as expected. The handover information may also record weather compensation settings, hot water temperatures, operating schedules and any adjustments made during testing.

These details give future engineers a useful starting point. They can compare the current readings with the original setup and identify whether settings have changed or the system is working outside its intended range.

Keep these somewhere safe

• The commissioning sheet and system performance readings

• User manuals for the heat pump, controls and cylinder

• Warranty terms, registration confirmation and serial numbers

• Relevant electrical, building or compliance certificates

• As-built drawings, photographs and service records

Keep digital copies as well as paper documents. A shared household folder, cloud storage account or property information file can prevent important records being lost when paperwork is moved or an engineer changes.

Manuals, controls and everyday operation

Your handover should explain how to use the controller, adjust heating and hot water schedules and respond to common alerts. It should also identify which settings should normally be left alone, as frequent changes to weather compensation or temperature controls can affect comfort and efficiency.

Ask the engineer to explain the difference between normal operation and a fault condition. You should know where the isolators are, how to safely reset the system if the manual allows it and who to contact if a warning returns. Do not remove covers or attempt repairs to the refrigerant circuit yourself.

Registering and maintaining the warranty

Heat pump warranties commonly involve separate cover for different components, so read the manufacturer’s terms carefully. Registration may need to be completed online within a set period, using the product serial number, commissioning date, installer details and your contact information.

After submitting the form, save the confirmation email or registration reference. Check whether the warranty requires annual servicing, approved engineers, particular water quality measures or records of faults and repairs. The exact conditions vary between manufacturers, and failing to follow them can affect a future claim.

Routine maintenance should follow the manufacturer’s instructions. This may include checking filters, keeping outdoor units clear of leaves and vegetation, inspecting condensate drainage and arranging a professional service at the recommended interval. Never block airflow around the outdoor unit or use it as a storage area.

Certificates and as-built information explained

Certificates are formal records showing that relevant work has been checked, tested or notified in line with applicable requirements. Depending on the system and work completed, you may receive documents relating to electrical work, building regulations, controls or other compliance matters. Ask the person responsible for the work to explain exactly what each certificate covers.

These records can help demonstrate that the system was properly documented when the home was sold. They can also help another contractor understand what is already present before carrying out alterations, fault-finding or servicing. Keep certificates with the commissioning sheet, even if they appear less relevant after the first year.

As-built drawings show the system as it was actually arranged, rather than only how it was intended to be arranged. Useful photographs can show pipe routes, isolation valves, cable runs, buried services, cylinder connections and the position of components before they are concealed or enclosed.

This information can save time during future servicing and reduce the risk of accidental damage. It is particularly helpful where pipework runs through cupboards, floors, walls or external ground areas.

If you did not receive the paperwork

Start by checking emails, online customer portals, the property file and any documents left near the heating controls. Contact the company that carried out the work and ask for a copy of the commissioning sheet, manuals, warranty information, applicable certificates and any available drawings or photographs.

Write down the heat pump make, model, serial number and commissioning date before contacting the manufacturer. The manufacturer may be able to confirm warranty registration or provide replacement manuals, although it may not hold every certificate issued for work at your property.

If records remain incomplete, arrange a professional inspection rather than guessing at the correct settings. An engineer can review the system’s condition, controls and available readings, then explain what information is missing and what should be recorded for future reference.

Get help with your heat pump records

If you are unsure whether your system is set up correctly or you do not have the documentation needed to care for it confidently, GEO M&E Ltd can review the settings and condition during a servicing or inspection visit. Call 02392388799 to discuss your heat pump and arrange practical advice based on the system at your home.