Do heat pumps need servicing?

Yes, heat pumps need professional servicing at least once a year. Unlike a boiler that sits idle in summer, a heat pump runs continuously across both heating and cooling cycles, which means components are under sustained pressure throughout the year.

Without regular checks, efficiency drops gradually and small faults go unnoticed until they become expensive repairs. Annual servicing protects the customer's system and keeps your business on the right side of warranty and compliance requirements.

Here is why heat pump maintenance matters for every contract you hold:

• Energy efficiency: A poorly maintained heat pump works harder than it should, which raises running costs for the customer.
• Warranty protection: Most manufacturers require annual service records to keep warranties valid.
• Equipment lifespan: Routine inspections catch early signs of component failure before they escalate.
• Regulatory compliance: Refrigerant handling falls under F-Gas regulations, and only an engineer holding the relevant F-Gas qualification can legally carry it out.

How often should you service a heat pump?

Once a year is the standard for most systems. Manufacturers commonly recommend twice-yearly servicing for units running in high-usage commercial settings or exposed coastal locations, where salt-laden air and heavier operating cycles put more strain on components, so always check the manual for the specific interval on each unit.

Building annual visits into recurring planned preventative maintenance (PPM) contracts is one of the most reliable ways to stay ahead of your service level agreement (SLA) commitments and prevent schedules from slipping across a busy contract base. When those contracts are set up with validated asset data and clear visit frequencies from the start, you avoid the scheduling gaps and missed tasks that tend to surface later in the contract term.

What does a heat pump service involve?

A heat pump service is a structured set of checks that confirms the system is safe, efficient, and running within manufacturer tolerances. Every visit should follow the same sequence so nothing gets missed and every record is complete.

The core tasks on a standard service visit are:

• Visual inspection: Check the indoor and outdoor units for damage, corrosion, or debris build-up.
• Cleaning: Clean filters and coils, and clear the area around the outdoor unit to protect airflow.
• Refrigerant checks: Inspect levels and test for leaks. This must be carried out by an F-Gas certified engineer.
• Electrical checks: Test wiring, connections, and safety controls.
• Controls and thermostat: Confirm the system responds correctly to temperature settings.
• Performance test: Run the system through a full cycle and measure output against expected levels.

Air source heat pump servicing

Air source heat pumps (ASHPs) are the most common type your engineers will encounter in the UK. The outdoor unit is exposed to weather, leaves, and airflow obstructions throughout the year, so pay close attention to the evaporator coil, fan condition, and defrost cycle on every ASHP visit.

A consistent, documented checklist for each visit protects the customer's warranty and reduces the risk of a fault being missed between services.

Ground source heat pump servicing

Ground source systems tend to appear on larger or commercial properties. The ground loop rarely needs direct attention, but your engineers should check the circulation pump, manifold, glycol levels, and flow rates on every visit.

Faults in ground source systems can take longer to surface, which makes thorough records on each visit especially important for spotting gradual performance decline early.

What can customers do between professional services?

Annual servicing covers the detailed technical checks, but things can change between visits. Sharing basic guidance with customers reduces unnecessary callouts and helps them feel involved in the care of their system.

Customers can carry out these simple checks themselves:

• Keep the outdoor unit clear: Remove leaves, debris, and anything blocking airflow around the unit.
• Monitor system pressure: Check the gauge periodically and report any drop to your service team.
• Listen for unusual noises: Grinding, rattling, or clicking can signal a developing fault.
• Check accessible filters: Where the manufacturer allows, clean filters according to the guidance provided.

When a customer does report a concern between scheduled visits, having a clear process for logging that as an ad-hoc job matters. Jobs created with vague notes or missing asset details slow engineers down and increase the chance of a wasted visit. Capturing the right information at the point of intake, including the specific unit, site contacts, and access requirements, means the engineer arrives prepared rather than guessing.

How to keep heat pump service records compliant and audit-ready

Compliance in heat pump servicing goes beyond completing the visit. Any system holding 5 tonnes of CO2-equivalent refrigerant or more must, by law, have every check and top-up logged with the quantity, refrigerant type, and engineer's details, kept for at least five years. Most single residential heat pumps sit below that threshold, but logging to the same standard is still expected by manufacturers and Refcom regardless of system size.

Each heat pump should have a complete service history tied to its site location and serial number. Using standardised digital forms on every visit means nothing is missed and records are stored centrally rather than spread across paper job sheets, keeping your compliance position in order no matter the system size.

When records are structured this way, a complete history for any system is a few clicks away rather than something you have to piece together from paper files when an inspection comes up. Gaps in documentation across even a handful of contracts can create real exposure during an inspection.

How to manage heat pump servicing across a growing contract base

Structured compliance records solve one problem. Managing those records consistently across dozens or hundreds of assets is a different challenge altogether.

Scheduling recurring visits, tracking which sites are overdue, and making sure every engineer submits a complete record all get harder as your contract base grows. The systems that work for ten assets rarely hold up across a hundred. Contracts that were mobilised without clear asset lists or agreed visit frequencies tend to show the strain first, with missed SLAs, repeated visits, and billing disputes following shortly after.

Joblogic helps you manage this without adding proportional admin overhead. You can set up PPM schedules, assign engineers based on qualification and availability, and capture every service record digitally from one platform. Engineers receive job details on the mobile app, complete standardised checklists on site, and records are automatically stored against the correct asset. When an ad-hoc callout comes in between planned visits, you can log it with the asset already linked, so the engineer has the full service history before they arrive.

Office teams get full visibility of what has been completed and what is outstanding, without chasing engineers for paperwork at the end of the day. If you want to see how this looks across a live contract base, book a demo with one of our specialists.

Frequently asked questions

Even after working through the detail above, you may have a few specific questions. Here are the most common ones.

Do heat pumps need annual servicing to keep the warranty valid?

Yes. Most manufacturers require evidence of annual professional servicing to keep warranties valid. Missing a service can void cover and leave the customer liable for repair costs.

What is included in a standard air source heat pump service?

A standard ASHP service covers the outdoor unit, evaporator coil, fan, filters, refrigerant levels, electrical connections, controls, thermostat, and a full system performance test.

How much does air source heat pump servicing cost in the UK?

Pricing varies depending on system type, engineer rates, and whether a service plan is in place. A single visit typically falls between £150 and £300.

What is an ASHP service plan?

An ASHP service plan is a recurring maintenance agreement between a customer and their service provider. It covers annual visits and often includes priority response for repairs, with costs spread across regular payments rather than paid as a single charge.

Can a customer service their own heat pump?

Basic checks such as clearing debris and monitoring system pressure can be done by the customer. Refrigerant checks and electrical inspections must be carried out by a qualified, F-Gas certified engineer.

How do you tell if a heat pump needs repairing rather than servicing?

Signs of a fault include unusual noises, a noticeable pressure drop, ice build-up outside normal defrost cycles, or heating output that is significantly lower than expected. An engineer should assess the system if any of these occur between scheduled visits.

What qualifications does an engineer need to service a heat pump?

Engineers must hold an F-Gas qualification to handle refrigerants legally. For businesses operating under Refcom registration, qualifications must be current and recorded against each engineer's profile.