- Area
- Greater London
- Postcode district
- TW13
- Nation
- England
- Guide price
- From £100 inc VAT
- Visit
- Rate agreed in advance
Heat pump repairs in Feltham: what to expect
A heat pump that is serviced and set up properly keeps running efficiently for many years. Many heat pump faults trace back to settings, low pressure or a worn part rather than the heat pump itself, and those can usually be put right.
Outdoor units in exposed spots around Feltham can ice more heavily, so siting is checked as part of any icing fault. For repeated faults in Feltham, the engineer looks at the system design as well as the failed part.
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
- Rooms or hot water not getting warm enough
- Systems losing pressure or needing frequent topping up
What's included
- Supply and fitting of replacement parts
- Testing of sensors, pumps, valves, pressures and electrics
- Reading of error history and operating data
- A clear explanation of the fault and a price for the repair before work goes ahead
- System refill, venting and recommissioning after the repair
Repairs in Feltham that need a part ordered are explained and priced before the engineer leaves.
Grants and rules for heat pumps in England
Homes in Feltham can use the Boiler Upgrade Scheme, which takes £7,500 off the cost of an air source heat pump when it replaces fossil-fuel or electric heating. Replacing oil or LPG heating qualifies for £9,000 for installations from 21 July 2026 to 31 March 2027, and air-to-air systems for £2,500. The MCS-certified installer named in your quote applies for the grant and deducts it from the price.
Heat pump repairs prices in Feltham
Guide prices for Greater London, 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–£200 |
| Sensor or thermistor replacement | £130–£310 |
| Expansion vessel or pressure relief valve | £170–£390 |
| Circulating pump replacement | £280–£540 |
| Fan motor replacement | £340–£730 |
| Refrigerant leak repair and re-gas (split systems) | £390–£1,050 |
| Main control board (PCB) replacement | £500–£1,250 |
Inc VAT. The fault-finding rate is agreed before we attend; repairs are priced in writing before parts are ordered.
Winter daylight and heating in Feltham
On the shortest day Feltham gets about 7 hours 50 minutes of daylight, and the winter sun reaches only around 15° above the horizon at noon. Winters this far south are milder than in most of the UK, which helps a heat pump run at low flow temperatures for much of the season.
How a visit works in Feltham
- 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 Feltham.
- 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 Feltham: questions
Do you also cover Hounslow?
Yes. We arrange heat pump servicing and repairs in Hounslow, which is about 3 miles north-east of Feltham, and across Greater London.
What should I check before booking a visit in Feltham?
Note any error code on the controller, check the system pressure gauge if you have one, and make sure the outdoor unit is clear of leaves or snow. Photos of the unit and controller help.
Can you work on a heat pump in Feltham that someone else installed?
Yes. We arrange servicing and repairs for most air source heat pumps in Feltham, whoever fitted them. Tell us the make and model when you get in touch.
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.
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.