Heat Pump Repair & Troubleshooting
When your air source heat pump stops heating, shows a fault code or makes an unfamiliar noise, we trace the cause and repair the fault rather than replace parts blindly. We cover Warwickshire, Oxfordshire, Gloucestershire and the North Cotswolds.
Signs Your Heat Pump Needs Attention
Rooms that once warmed steadily may now take much longer to reach temperature, while hot water becomes inconsistent. A thin layer of frost during a normal defrost cycle is expected, but heavy ice left on the outdoor unit points to a problem. Reduced airflow, water around the unit or repeated electrical trips also need attention.
Some faults are caused by controls rather than the heat pump itself. Incorrect settings, a failed sensor, restricted circulation or air in the heating system can all affect performance. If electricity use has risen without a clear change in heating habits, we check the system as a whole instead of assuming the compressor needs replacing.
Older installations can be harder to maintain when records are missing or replacement parts are no longer readily available. We identify the failed component, explain whether repair is sensible and set out the likely cost before work starts. For landlords and property managers, we can also record the fault and work completed for the property file.
What to Check Before Booking a Heat Pump Repair
Before arranging heat pump repair, note the model, fault code, any changes and what the system is doing. Don’t remove electrical covers or reset trips. We use details to judge urgency, plan testing and advise if repair or replacement makes sense.
Record the fault code and timing
Note the exact code, when it appears and whether heating, hot water or both are affected. A photograph of the controller and outdoor unit helps us plan the right tests.
Check the controls without changing installer settings
A schedule, holiday mode or room thermostat setting can make a working heat pump appear faulty. Check the display, set temperature and zone controls, but leave advanced settings unchanged.
Keep clear of damaged equipment
If you smell burning, see smoke or find exposed wiring, leave the system switched off and keep away from the equipment. Do not remove covers or interfere with refrigerant pipework.
Gather the installation history
The model number, installation date, service records and previous fault history help us identify compatible parts. Missing records are common on older systems, so we can investigate the equipment on site.
Ask what repair is actually justified
A failed sensor or control may be repairable, while a major component may need a wider assessment. We test the system, explain the cause and set out the likely cost before work starts.
Why Proper Heat Pump Repairs Matter
When repair is needed, the right diagnosis helps prevent repeat visits and unnecessary part changes. We test controls, circulation and the outdoor unit together, then restore dependable heating with a clear record of what changed.
Older homes and rural properties can need different advice. We consider insulation, emitters and access before recommending work, keeping disruption proportionate and costs transparent.
Repair or replacement advice
If the heat pump still has useful service life, we explain the repair option before discussing replacement. You can weigh the likely cost against the system’s condition.
Settings that suit the home
If the system runs but struggles to hold temperature, we review the heating curve and controls. We set them around the property rather than forcing the system to run harder.
Checks beyond the outdoor unit
If rooms heat unevenly, we look at radiators, valves, pipework and circulation. This helps separate a heat pump fault from a problem elsewhere in the heating system.
Electrical faults investigated properly
If the system trips the supply, we check the electrical connection, protection and heat pump controls. We identify the cause before resetting the equipment.
Less disruption during repairs
If only one component has failed, we target that part instead of dismantling working sections of the system. We explain what needs to be isolated and leave the work area tidy.
A clear record of the repair
If the property is rented or changing hands, we record the fault, checks and work completed. The property file then shows what was repaired and what to monitor.
Heat Pump Repair Questions Answered
How much does heat pump repair cost?
If the heat pump stops completely, switch off the system only if it is safe, note any displayed code, and avoid repeatedly resetting it; we’ll investigate the cause and explain.
Can an air source heat pump be repaired instead of replaced?
Often, yes. We can replace failed sensors, pumps, valves or controls, but a severely damaged or obsolete unit may make replacement more practical. We explain both options before work starts.
Will heat pump repairs disrupt my home?
Most repairs are completed without removing the heat pump. We protect work areas, isolate power safely and explain any temporary heating loss before starting. Restricted access is planned with you.
How often should an air source heat pump be serviced?
Most air source heat pumps benefit from annual servicing, but manufacturer’s guidance and warranty terms take priority. We check operation, controls and circulation, then record findings and recommended follow-up clearly.
Why is my heat pump running but not warming the house?
A running heat pump may have restricted airflow, poor circulation, incorrect controls or undersized radiators. We test each part, then explain the repair needed to restore comfortable, even heating throughout.