Heat Pump Service London

Heat Pump Service London

Professional servicing for air source and ground source heat pumps — from £200 + VAT.

Regular servicing keeps a heat pump running efficiently, reduces energy waste, and extends system lifespan. We service all major brands across residential and commercial properties in London, including Daikin, Mitsubishi Ecodan, Samsung, Vaillant, NIBE and Grant.

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heat pump unit is outside for the air source heat pump service in London property

Why Regular Servicing Matters

Heat pumps run continuously throughout the year. Small faults, airflow issues or sensor errors can quickly reduce output and increase running costs. A proper service identifies these issues early and keeps the system operating as the manufacturer intended.

Typical reasons for booking a service:

  • Reduced heat output
  • Unusual noise from the outdoor unit
  • Poor hot water recovery
  • Rising energy bills
  • Defrost cycle problems
  • Slow response or incorrect temperatures
  • System not keeping the property warm in colder weather

What’s Included in a Heat Pump Service?

A detailed inspection covering the full system (indoor and outdoor components):

Air Source Heat Pumps Ground Source Heat Pumps
  • Check refrigerant circuit pressures (where ports are available)
  • Inspect expansion valve operation
  • Clean indoor and outdoor coils
  • Check airflow, fan operation and ducting
  • Inspect condensate and drainage
  • Test temperature sensors, thermistors and flow sensors
  • Electrical safety checks and terminal tightening
  • Insulation checks on pipework
  • Check outdoor unit defrost cycle
  • Controller, programmer and settings review
  • Check flow temperature, return temperature and delta-T
  • Check glycol level (if applicable)
  • Brine/glycol concentration test
  • Circulation pump checks
  • Check ground loop operating pressures
  • Plate heat exchanger inspection
  • Electrical and control system checks
  • Performance temperature checks
  • Safety devices and flow switches

A written service report is issued after completion.

homeowner wants outdoor heat pump unit defrost cycle inspection

Common Issues Found During Servicing

These faults typically go unnoticed by property owners but lead to poor performance:

  • Blocked or partially blocked coils reducing efficiency
  • Incorrect sensor readings causing unstable temperatures
  • Low flow rates from scaling, sludge or debris in filters — issues that can often be resolved with a powerflush service
  • Faulty defrost cycle leading to ice buildup
  • Undersized or failing circulation pumps
  • Incorrect control settings or schedules
  • Glycol concentration too low on GSHP systems
  • Poor installation of condensate drainage causing leaks
  • Fan motor wear or noise
  • Electrical terminal loosening from vibration

Finding issues early prevents expensive repairs later.

Our Servicing Process (Step-by-Step)

  • Initial system assessment
    Basic performance, temperatures, noise and airflow.
  • Visual inspection
    Outdoor unit, indoor components, pipework and controls.
  • Electrical checks
    Safety devices, fuses, terminals, insulation and currents.
  • Hydraulic checks
    Flow rates, filters, pumps and pipework condition.
  • Refrigerant checks
    Pressures and system performance (where access ports allow).
  • Cleaning and maintenance
    Coils, filters and general housekeeping.
  • Control and settings optimisation
    Reviewing weather compensation, flow temps and schedules.
  • Performance review
    Measure system behaviour after adjustments.
  • Report issued
    A clear summary of findings, recommendations and next steps.

Signs Your Heat Pump Needs Attention

If you notice any of the following, a service is overdue:

  • Property feels colder than usual
  • System constantly running at high output
  • Excessive noise from the outdoor unit
  • Repeated defrost cycles or icing
  • Hot water recovery slower than normal
  • Higher energy bills for the same usage
  • Error codes appearing on the controller

Pricing

Heat pump service — from £200 + VAT
This covers most domestic air source heat pumps.

Larger systems, ground source heat pumps or systems requiring additional time/materials:
Typically £250–£350+VAT, depending on complexity.

If any parts or additional repairs are needed, these are always agreed with you before work continues.

Parking and congestion charge (if applicable) are added at cost.

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serviceteam engineer is carrying out ASHP service

Why Choose Serviceteam London for Heat Pump Servicing?

Book a heat pump maintenance visit if you notice any of the following:

  • Experienced Gas Safe heating and F-Gas certified engineers
  • Specialists in air source and ground source heat pump servicing
  • Transparent pricing with no hidden extras
  • Fast response and flexible appointment slots
  • Clear, easy-to-understand service reports
  • Trusted by London homeowners, landlords and businesses

Whether you need annual heat pump maintenance or a one-off heat pump service, we deliver a reliable and professional service across London.

Heat Pump Service vs Boiler Service

Here is a quick comparison to help you understand the difference between a heat pump service and a boiler service:

Feature Heat Pump Service Boiler Service
Fuel Type Electric (air source or ground source) Gas
Main Checks Refrigerant, fans, coils, electrics Gas safety, burner, flue, combustion
Recommended frequency Annual Annual
Typical Benefits Lower running costs, long lifespan, efficiency Safe operation, efficiency, and legal compliance
Engineer requirement F-Gas certified heat pump engineers Gas Safe registered engineers

If you have both a boiler and a heat pump, we can look after your complete heating system with coordinated servicing.

Brands We Service

Daikin, Mitsubishi Ecodan, Vaillant AroTHERM, Samsung, NIBE, LG Therma V, Grant Aerona, Stiebel Eltron and more.

Areas We Cover

We service all London boroughs:

Wandsworth, Lambeth, Southwark, Kensington, Chelsea, Hammersmith, Fulham, Westminster, Camden, Islington, Hackney, Tower Hamlets, Brent, Ealing, Hounslow, Richmond, Kingston, Merton, Bromley, Croydon, Barnet, Enfield, Haringey, Redbridge, Greenwich, Lewisham.

Book a Heat Pump Service

If you’d like to arrange an appointment, we just need your address, preferred date and a contact number.
Use our online form or call the team.

F-Gas certified heat pump engineer is servicing Mitsubishi Ecodan outdoor unit