- Area
- Glasgow and Dunbartonshire
- Postcode district
- G82
- Nation
- Scotland
- Guide price
- From £90 inc VAT
- Visit
- Rate agreed in advance
Heat pump repairs in Dumbarton: what to expect
Whoever installed your heat pump, aftercare can be arranged in Dumbarton. Tell us the make and model and roughly how old it is, and we will set out what the visit involves before you book.
Across Dumbarton and Glasgow and Dunbartonshire, refrigerant repairs on split systems are carried out by an F-gas certified engineer. We repair heat pumps in Dumbarton whoever installed them, including older monobloc and split systems.
When a heat pump shows an error, loses pressure or stops heating, an engineer diagnoses the cause and explains the repair and its cost before fixing it.
- Rooms or hot water not getting warm enough
- Outdoor units that have become noisy, iced up or keep switching on and off
- Heat pumps showing an error code or fault light
What's included
- Fault-finding visit at a rate agreed before attending
- Testing of sensors, pumps, valves, pressures and electrics
- System refill, venting and recommissioning after the repair
- Supply and fitting of replacement parts
- A clear explanation of the fault and a price for the repair before work goes ahead
Heat pump owners in Dumbarton can arrange a fault-finding visit at a rate agreed before an engineer attends.
Grants and rules for heat pumps in Scotland
The Boiler Upgrade Scheme does not apply in Scotland. Instead, homeowners in Dumbarton can apply to Home Energy Scotland for a grant of up to £7,500 towards a heat pump, with up to £1,500 more for eligible rural and island homes, plus an optional interest-free loan of up to £7,500. You need a written funding offer before any work starts.
What to budget for heat pump repairs in Dumbarton
Guide prices for Glasgow and Dunbartonshire, 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 | £90–£180 |
| Sensor or thermistor replacement | £120–£280 |
| Expansion vessel or pressure relief valve | £150–£350 |
| Circulating pump replacement | £250–£480 |
| Fan motor replacement | £300–£650 |
| Refrigerant leak repair and re-gas (split systems) | £350–£950 |
| Main control board (PCB) replacement | £450–£1,100 |
Inc VAT. The fault-finding rate is agreed before we attend; repairs are priced in writing before parts are ordered.
Designing for Dumbarton's winters
Dumbarton has about 6 hours 57 minutes of daylight at midwinter against 17 hours 36 minutes in midsummer. Heat pumps are designed to keep working well below freezing, but the design temperature for the survey is set for local conditions, not an average day.
What happens when you book in Dumbarton?
- Tell us the make if you know it, the error code or symptoms, and send photos of the unit and controller.
- We confirm the fault-finding rate and arrange a visit in Dumbarton.
- The engineer diagnoses the fault and gives you a written price for the repair.
- Parts are ordered once you agree, and the repair is completed and tested.
Heat pump repairs in Dumbarton: questions
Will the engineer need access indoors as well as outside?
Usually yes. The outdoor unit, the hot water cylinder, the controls and the pipework and valves indoors are all part of the visit, so allow access to each.
Do you also cover Alexandria?
Yes. We arrange heat pump servicing and repairs in Alexandria, which is about 3 miles north of Dumbarton, and across Glasgow and Dunbartonshire.
Can you work on a heat pump in Dumbarton that someone else installed?
Yes. We arrange servicing and repairs for most air source heat pumps in Dumbarton, whoever fitted them. Tell us the make and model when you get in touch.
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.