Why Book an Annual Heat Pump Service?

An air source heat pump service is essential for your system and brings three vital benefits:

  1. Maintain efficiency – Regularly servicing your heat pump could help lower your bills by keeping it energy efficient
  2. Protect your warranty – A service will keep the manufacturer’s warranty valid and help avoid big repair bills
  3. Prevent problems – Servicing your air source heat pump helps reduce the risk of a breakdown and unexpected problems.

At Metro Plumb, we offer comprehensive air source heat pump servicing designed to catch potential issues early and keep your system running efficiently all year round.

Posted on Google Google
Fallon Oakley profile picture
Fallon Oakley
November 6, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Fast, clean and did the repairs with no problems
Posted on Google Google
Tracey Mould profile picture
Tracey Mould
November 6, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Lovely professional guys
Posted on Google Google
Carol Bell profile picture
Carol Bell
November 6, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
It was fantastic and eventually solved. Would recommend anyone to use it.
Posted on Google Google
Peter lovatt profile picture
Peter lovatt
November 5, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Very good sorted very quickly
Posted on Google Google
Niki Hicks profile picture
Niki Hicks
November 4, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
We booked a septic tank empty. The engineer arrived the next day & rang to tell us when he was arriving. He arrived on time and was very polite & friendly and did a clean & efficient job. Would recommend.
Posted on Google Google
Lauren Hassall profile picture
Lauren Hassall
November 4, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Always the same gent that gets sent out to the issue, always deals with it quickly while he's here. Always sent out same day or next day.
Posted on Google Google
geoff bevan profile picture
geoff bevan
November 4, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Cliff Yapp, from Metro Rod arrived yesterday afternoon to empty our septic tank. Great job efficiently done. Will ask for him next time. Cheers
Posted on Google Google
Mahin Driskill profile picture
Mahin Driskill
November 4, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
He called us before coming; he was thorough and very pleasant. He solved some of the issues.
Posted on Google Google
James howard profile picture
James howard
November 4, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Fast response and very thorough/professional job carried out by drain engineer.
Posted on Google Google
Nikki Walker profile picture
Nikki Walker
November 4, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Brilliant, got rid of the clog, were very professional. Can’t fault them, deffo recommend them
Posted on Google Google
Jack Baldock profile picture
Jack Baldock
November 3, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Great price Very quick service Managed to sort within the hour quoted The engineer Georgie was very friendly. Credit to the company
Posted on Google Google
Lloyd Windust profile picture
Lloyd Windust
November 3, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Noticed damp patch in ceiling of B1- so contacted Hastings Direct (our Home insurers)! The 1st plumber/org. rang me 90’ later but didn’t leave a msg. When I rang him back a furthet 90’ later, he said “I have no more jobs!”. Rang HD again twice, and they said Metro Plumb were now assigned, and would let me know 30’ before arriving. Plumber Kyle just turned up at 19:16 but my wife (alone) let him in, and he stopped the dripping pipe immediately. Kyle said he would return the next morning with a new part. Plumber Kieran arrived in the afternoon and replaced the ball valve in the small c/h tank. Kieran proved that my new iPhone didn’t give the Metro Plumb plumbers a chance to leave a message ! Many thanks anyway and I’ll now update Hastings Direct.
Posted on Google Google
Emma Walker profile picture
Emma Walker
November 3, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Really pleased with the service provided by Cliff Yapp today. Highly recommend.
Posted on Google Google
Charlie Efford profile picture
Charlie Efford
November 3, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Had my septic tank emptied today by Cliff from Metro Rod. Great service, competent and friendly - can highly recommend. Good price for this service too
Posted on Google Google
Claire Bushnell profile picture
Claire Bushnell
November 3, 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Amazing service, the problem was discovered really quickly and rectified after a massive water leak. Very happy and grateful.

What’s Included in an Air Source Heat Pump Service?

If you’re wondering what does a heat pump service involve, a professional air source heat pump service is designed to assess the health of your system, maintain peak efficiency and identify any developing issues before they become costly repairs. Regular air source heat pump servicing helps keep your heating running effectively, supports lower energy consumption and can help protect manufacturer warranty requirements.

Our expert heat pump service plan includes: 

Full system inspection and testing

We thoroughly check all components to ensure your heat pump is operating correctly and efficiently. 

Cleaning filters and internal components

We clean filters and parts to help maintain airflow and prevent strain on the system, improving both performance and lifespan. 

Checking refrigerant levels and system pressure

Proper refrigerant levels are essential for effective heating and cooling. We’ll top up or adjust as needed. 

Verifying electrical connections and controls

We inspect all wiring, sensors, and control boards to ensure safe and accurate operation. 

Identifying early signs of wear or faults

We catch small issues early to hopefully prevent costly breakdowns and extend the life of your system. 

Need a quote? Fill out the form or call us for a no-obligation estimate on your air source heat pump service cost.

Why Choose Metro Plumb for Your Heat Pump Service? 

At Metro Plumb, we make air source heat pump servicing hassle-free. Our engineers are highly trained, fully insured, and DBS-checked. We’re known for: 

Why Metro Plumb - Full UK coverage icon

Trusted nationwide network with local air source heat pump engineers

Metro Plumb - Qualified Plumbers Icon

Qualified, insured, and DBS-checked engineers, APHC accredited

Metro Plumb - Maintenance & Repair Icon

Reliable 24/7/365 support for maintenance and repairs

Metro Plumb - Excellent Customer Service Icon

Transparent pricing and excellent customer service

A Comprehensive Air Source Heat Pump Service Checklist

During an air source heat pump service, it can be hard to know exactly what work your plumbing engineer is doing. That’s why we’ve created a comprehensive checklist to help you answer the question “what does a heat pump service involve”.
Typically, air source heat pump servicing includes the following checks.

External Unit Assessment

  • Examine the outdoor unit for signs of damage, corrosion or excessive wear
  • Remove leaves, dirt and other debris that could restrict operation
  • Inspect the heat exchanger for dirt build-up that may affect heat transfer
  • Check the fan assembly for smooth and unrestricted operation
  • Confirm the unit remains stable, level and securely mounted
  • Review condensate drainage to ensure water can discharge correctly

Airflow & Ventilation Inspection

  • Assess airflow through the heat pump to ensure optimum performance
  • Clean or replace filters where required
  • Check that vents and air pathways remain free from blockages
  • Identify any restrictions that could cause the system to work harder than necessary
  • Confirm adequate clearance around the outdoor unit

Pipework & Hydraulic System Checks

  • Inspect visible pipework and joints for signs of leakage
  • Check water circulation throughout the heating system
  • Verify operating pressures are within recommended levels
  • Inspect external insulation for deterioration or damage
  • Look for evidence of corrosion, frost damage or moisture ingress

Controls & Electrical Component Testing

  • Examine electrical connections for wear or loose terminals
  • Test the operation of thermostats and temperature sensors
  • Verify safety devices are functioning correctly
  • Check system controls respond accurately to user settings
  • Review wiring and electrical components for signs of overheating

System Performance Evaluation

  • Measure temperatures at key points within the system
  • Review heating output against expected performance
  • Run manufacturer diagnostics where available
  • Investigate any fault notifications or warning indicators
  • Assess overall efficiency and operating effectiveness

Mechanical Component Inspection

  • Check pumps, valves and moving components for signs of wear
  • Listen for unusual operational noises
  • Identify vibration issues that could indicate developing faults
  • Inspect critical components for deterioration
  • Highlight any maintenance requirements before they develop into major repairs

Service Report & Recommendations

  • Provide a summary of the system’s condition
  • Highlight any defects or areas requiring attention
  • Recommend adjustments to improve energy efficiency
  • Record servicing information for maintenance records and warranty purposes
  • Advise on future servicing or repair requirements

Regular air source heat pump maintenance helps maximise system performance, improve reliability and reduce the likelihood of unexpected breakdowns.

 

Air Source Heat Pump Servicing FAQs

What are the common warning signs that an Air Source Heat Pump needs servicing?

Common Warning Signs Include

  • Loss of heating performance or slower warm-up times
  • Rooms struggling to reach the desired temperature
  • The heat pump running for long periods without achieving the target temperature
  • Unusual sounds such as buzzing, rattling, clicking or grinding
  • Rising energy bills without a clear explanation
  • Reduced airflow from the system
  • Ice accumulation that appears more frequently than expected
  • Fault codes or warning lights appearing on the controller
  • Frequent starting and stopping of the system
  • Water leaks, damp patches or standing water near the unit
  • Increased vibration from the outdoor unit
  • Visible dirt, debris or blocked coils affecting airflow

Ignoring these warning signs can not only reduce efficiency but also increase running costs and put the system at greater risk of breakdowns. Routine air source heat pump servicing helps identify potential problems early, ensuring your system continues to deliver dependable heating throughout the year.

How often should an air source heat pump be serviced?

To keep your air source heat pump running efficiently and reliably, it’s recommended to have it serviced annually by a qualified engineer. Regular servicing ensures optimal performance, reduces energy costs, and helps identify minor issues before they become costly repairs. Annual maintenance is also a requirement to maintain manufacturer warranties in many cases. 

Why is air source heat pump maintenance important?

Regular maintenance of your air source heat pump boosts energy efficiency, prevents costly breakdowns, extends system lifespan, and keeps your warranty valid, ensuring optimal, eco-friendly performance all year round. 

Can I service my air source heat pump myself?

You can carry out basic tasks like clearing debris and cleaning filters. However, a full service should always be done by a qualified engineer to avoid damaging the system and to stay compliant with manufacturer warranties. Contact your local heat pump service experts at Metro Plumb for a free quote. 

How much does a heat pump service cost?

The average cost of servicing an air source heat pump can vary based on the size of the system and the extent of any repairs or adjustments needed during the service. 

Speak to a plumber at Metro Plumb 0800 415 514

Case Study: Restoring Efficiency with Air Source Heat Pump Service

Discover how professional air source heat pump servicing restored efficiency and prevented costly repairs for a customer...

Gas vs Oil vs Air Source Heat Pump: Which Heating System Is Right for Your Home?

Comparing a heat pump vs gas boiler or oil boiler? This guide explores the key differences in energy efficiency, running costs,...

Case Study: Air Source Heat Pump Installed to Replace Ageing Gas System

Discover how Metro Plumb helped a homeowner in Kent transition from a traditional gas boiler to a highly efficient air source...

Case Study: Air Source Heat Pump Repair to Restore Hot Water to a Busy Sports Centre

Discover how Metro Plumb’s specialist air source heat pump repair team restored hot water to a busy sports centre in Kent...