- Area
- County Antrim
- Postcode district
- BT1
- Nation
- Northern Ireland
- Guide price
- From £90 inc VAT
- Visit
- Rate agreed in advance
What to know about heat pump repairs in Belfast
Aftercare matters as much as installation. For a heat pump in Belfast the visit checks the outdoor unit, the water circuit and the controls, and the engineer explains any settings that would help the system run more efficiently.
Outdoor units in exposed spots around Belfast can ice more heavily, so siting is checked as part of any icing fault. We repair heat pumps in Belfast 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.
- Heat pumps installed by another company that need a second opinion
- Outdoor units that have become noisy, iced up or keep switching on and off
- Systems losing pressure or needing frequent topping up
What's included
- Fault-finding visit at a rate agreed before attending
- 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
- Refrigerant repairs by an F-gas certified engineer where needed
Across Belfast and County Antrim, refrigerant repairs on split systems are carried out by an F-gas certified engineer.
Grants and rules for heat pumps in Northern Ireland
The Boiler Upgrade Scheme covers England and Wales only, and there is currently no dedicated heat pump grant for homeowners in Northern Ireland. Our quote for a Belfast home is therefore shown without a grant deduction; if support becomes available we will tell you how it applies.
Guide prices for heat pump repairs in Belfast
These are guide prices including VAT. The rate for your visit in Belfast is confirmed before we book it, and any repair is priced in writing before parts are ordered.
| Repair | Guide price |
|---|---|
| Fault-finding visit and diagnosis | £90–£170 |
| Sensor or thermistor replacement | £120–£270 |
| Expansion vessel or pressure relief valve | £150–£340 |
| Circulating pump replacement | £240–£470 |
| Fan motor replacement | £290–£630 |
| Refrigerant leak repair and re-gas (split systems) | £340–£920 |
| Main control board (PCB) replacement | £440–£1,050 |
Inc VAT. The fault-finding rate is agreed before we attend; repairs are priced in writing before parts are ordered.
How long is the heating season in Belfast?
Belfast sees roughly 7 hours 15 minutes of daylight in December and 17 hours 17 minutes in June. With a longer heating season than the south, the gains from low flow temperatures and good controls add up over the year.
Booking a visit in Belfast
- 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 Belfast.
- 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 Belfast: questions
Do you also cover Newtownabbey?
Yes. We arrange heat pump servicing and repairs in Newtownabbey, which is about 4 miles north of Belfast, and across County Antrim.
How much does a visit cost in Belfast?
The rate for a service or fault-finding visit is agreed before anyone attends. Any repair is priced in writing before parts are ordered, so you decide before work goes ahead.
Can you work on a heat pump in Belfast that someone else installed?
Yes. We arrange servicing and repairs for most air source heat pumps in Belfast, 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.
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.