Typical repairs fall within a guide range of £90–£1,100, including VAT, depending on the part and the time involved. Refrigerant repairs must be done by an F-gas certified engineer. Regular heat pump servicing catches many of these faults before they stop the system working.
Outdoor units in exposed spots around Berkshire can ice more heavily, so siting is checked as part of any icing fault. Across Berkshire and Berkshire, refrigerant repairs on split systems are carried out by an F-gas certified engineer. Heat pump owners in Berkshire can arrange a fault-finding visit at a rate agreed before an engineer attends.
Who it suits
- Heat pumps showing an error code or fault light
- Heat pumps installed by another company that need a second opinion
- Rooms or hot water not getting warm enough
- Systems losing pressure or needing frequent topping up
Grants and rules for heat pumps in England
In England the Boiler Upgrade Scheme gives £7,500 towards an air source heat pump (£9,000 if it replaces oil or LPG, from 21 July 2026 to 31 March 2027), and since 28 April 2026 a valid EPC is no longer needed. The grant is applied for by the MCS-certified installer and shown as a deduction on your quote.
Heat pump repairs prices in Berkshire
Guide prices for Berkshire, including VAT. We agree the visit rate before anyone attends, so there are no surprises on the day.
| Repair | Guide price |
|---|---|
| Fault-finding visit and diagnosis | £100–£190 |
| Sensor or thermistor replacement | £130–£300 |
| Expansion vessel or pressure relief valve | £160–£370 |
| Circulating pump replacement | £260–£510 |
| Fan motor replacement | £320–£690 |
| Refrigerant leak repair and re-gas (split systems) | £370–£1,000 |
| Main control board (PCB) replacement | £480–£1,150 |
Inc VAT. The fault-finding rate is agreed before we attend; repairs are priced in writing before parts are ordered.
Towns we cover in Berkshire
We cover 10 towns in Berkshire for heat pump repairs. Each links to local guide prices and the grant position for England.
| Town | Postcode district | Nearest town | Midwinter daylight |
|---|---|---|---|
| Reading | RG1 | Lower Earley | 7 h 50 min |
| Slough | SL1 | Maidenhead | 7 h 49 min |
| Bracknell | RG12 | Crowthorne | 7 h 50 min |
| Maidenhead | SL6 | Slough | 7 h 49 min |
| Wokingham | RG40 | Crowthorne | 7 h 50 min |
| Newbury | RG14 | Thatcham | 7 h 51 min |
| Lower Earley | RG6 | Reading | 7 h 50 min |
| Crowthorne | RG45 | Sandhurst | 7 h 51 min |
| Thatcham | RG19 | Newbury | 7 h 51 min |
| Sandhurst | GU47 | Crowthorne | 7 h 51 min |
Heat pump repairs questions
Is ice on my heat pump a fault?
Some frost on the outdoor unit in cold, damp weather is normal, and the unit clears it with regular defrost cycles, often releasing a little vapour. It becomes a fault when thick ice builds up and does not clear, or when ice blocks the fan. That can point to poor airflow, a failed sensor, drainage problems or low refrigerant, and needs checking.
Do refrigerant repairs need a specialist?
Yes. Any work on a heat pump's refrigerant circuit, such as tracing a leak, replacing a component or re-gassing, must by law be done by an F-gas certified engineer where the refrigerant is fluorinated, such as R32; units using R290 (propane) need an engineer trained in flammable refrigerants. On split systems the refrigerant runs through pipes inside your home, so leaks there are more likely than on sealed monobloc units.
Why does my heat pump keep switching on and off?
Frequent starting and stopping, called short cycling, is usually caused by an oversized heat pump, low water flow, too many zones closing at once or controls set with too narrow a range. It reduces efficiency and wears components. An engineer can check the settings, flow rates and design, and can often improve it with control changes before any parts are needed.
Can you repair a heat pump installed by another company?
Yes. We carry out fault-finding and repairs on heat pumps installed by other companies, including monobloc and split systems. Tell us the make, model and approximate age when you get in touch, plus any error code shown. If the system is still under the manufacturer's warranty, it may be quicker to contact the original installer or manufacturer first.