- Area
- Essex
- Postcode district
- CM20
- Nation
- England
- Guide price
- From £90 inc VAT
- Visit
- Rate agreed in advance
Heat pump repairs in Harlow: what to expect
Aftercare matters as much as installation. For a heat pump in Harlow 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.
Across Harlow and Essex, refrigerant repairs on split systems are carried out by an F-gas certified engineer. For repeated faults in Harlow, 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
- Heat pumps showing an error code or fault light
What's included
- Reading of error history and operating data
- Testing of sensors, pumps, valves, pressures and electrics
- Refrigerant repairs by an F-gas certified engineer where needed
- A clear explanation of the fault and a price for the repair before work goes ahead
- Fault-finding visit at a rate agreed before attending
We repair heat pumps in Harlow whoever installed them, including older monobloc and split systems.
Grants and rules for heat pumps in England
Homes in Harlow 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.
Guide prices for heat pump repairs in Harlow
These are guide prices including VAT. The rate for your visit in Harlow 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–£190 |
| Sensor or thermistor replacement | £120–£290 |
| Expansion vessel or pressure relief valve | £150–£360 |
| Circulating pump replacement | £260–£490 |
| Fan motor replacement | £310–£670 |
| Refrigerant leak repair and re-gas (split systems) | £360–£980 |
| Main control board (PCB) replacement | £460–£1,150 |
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 Harlow?
Harlow has about 7 hours 47 minutes of daylight at midwinter and 16 hours 41 minutes at midsummer. That swing matters if you pair a heat pump with solar panels: summer generation can cover much of the hot water, winter generation far less.
What happens when you book in Harlow?
- 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 Harlow.
- 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 Harlow: questions
Can you work on a heat pump in Harlow that someone else installed?
Yes. We arrange servicing and repairs for most air source heat pumps in Harlow, whoever fitted them. Tell us the make and model when you get in touch.
What should I check before booking a visit in Harlow?
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.
Do you also cover Hoddesdon?
Yes. We arrange heat pump servicing and repairs in Hoddesdon, which is about 5 miles west of Harlow, and across Essex.
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.