Independent care. Family-run since 1984.Engineer visits Monday–Thursday
A Brassett Ltd — family-run since 1984
0800 037 4915Book Online
Boiler & hot-water repairs

Let’s get your warmth back.

Boilers, heating controls and immersion heaters.

A fault message is one clue. What happens at the taps, radiators and controls adds the rest of the picture. Describe the change in your existing heating system so your repair enquiry starts in the right place.

Book OnlineCall 0800 037 4915Prepare a heating enquiry

Having trouble booking? Our team can help by phone or email.

Boiler faultsHeating controlsImmersion heaters
Illustrative A Brassett engineer noting symptoms beside a boiler with its casing closed
Family-run since 1984A familiar name in home repairs
Monday–Thursday visitsAppointments confirmed with you
Your area comes firstFull postcode & service checked
0800 037 4915Freephone · or book online
How can we help?Find your area
The right place to start

Which pattern sounds familiar?

Record what you notice during normal use. There is no need to remove the boiler casing or adjust internal components.

Hot water works. Heating does not.

Tell us whether every radiator is cold or only some, and whether the room thermostat and programmer appear to request heating. Include any recent changes to the controls.

Heating works. Hot water has changed.

Describe whether the water stays cold, changes temperature or only heats when the central heating runs. Say whether the home has a hot-water cylinder.

A code keeps coming back.

Copy the exact code and photograph the display if safe. The same letters or numbers can mean different things on different models, so include the boiler brand and model.

The system behaves unpredictably.

Note whether the fault happens from cold, after a long run or when heating and hot water are used together. Describe noises, visible leaks or changes in the displayed pressure without trying to recreate the fault.

The displayed pressure changes

Note the reading you can see during normal use and how often it changes. Report any visible leak. Do not keep adding water or changing settings to hide a recurring fault.

The immersion heater stops heating.

If a cylinder uses an immersion heater, tell us whether it stays cold, overheats or trips the electrics. Keep the electrical cover closed and describe any timer or switch symptoms.

A fault code is a starting point for assessment. The repair scope and a suitable engineer are confirmed for your system and address. Do not remove the boiler casing to find a label.

A little more understanding

The boiler is part of a system.

A heating enquiry can involve the boiler, its controls and the way hot water moves around the home. Describing which parts still work is as useful as describing what has failed. It helps distinguish a whole-system problem from an issue affecting one function or room.

Before you call, note the brand, model and any fault code visible on the normal display. If you know whether the boiler is a combi or works with a separate hot-water cylinder, include that too. Do not remove covers to find information.

Tell us about recent work or changes, such as a replacement thermostat, radiator work or a new pattern of pressure loss. The repair scope, access and appointment availability can then be discussed for the actual system.

Illustrative insulated hot-water cylinder with a closed immersion-heater cover
Hot-water cylinder care

Immersion heater repairs.

A cylinder that no longer heats, overheats or trips the electrics needs its own description. Tell us whether the immersion is the main heat source or a backup, and whether any other way of heating the water still works.

We can discuss assessment of the element, thermostat and controls on a suitable existing system. Keep electrical covers closed, and stop using a heater that overheats or repeatedly trips.

Model, cylinder type, access and the work required are checked before the visit is arranged.

A useful start to your booking

Put the heating symptoms in order.

Prepare my repair detailsArea → Brand → ApplianceOpenClose

Start with your area, then the brand and appliance or fitting. Add the symptom to create a short brief you can copy into your booking.

1 Area2 Brand3 Appliance
Not sure? Find your area in the directory.
If it is not visible, choose “Brand not known”.
Brand and model determine the repair scope.
Only read labels that are safely accessible.

This prepares your wording. Contact our team to request a visit; creating a brief does not book an appointment.

Your brief is prepared on this page. Nothing is sent when you build or copy it; an email draft remains yours to review and send. Only the details you choose to submit through booking or email are sent to us.

Your area comes first

Find your area.

Search towns & postcodesOpen the directory to find your areaOpenClose

Search by town, neighbourhood or postcode for appliance, plumbing, heating and drainage enquiries. Food-waste disposal enquiries are welcome from every area listed here. Choose a place to open its repair page, with your area ready before you choose the brand and appliance or fitting. We confirm your full postcode, repair scope and appointment availability before arranging a visit.

Browse by postcode group, or search for your area.
ALSt Albans & HarpendenBrowse areas
BNBrighton, Eastbourne & SussexBrowse areas
BRBromley & OrpingtonBrowse areas
CMChelmsford, Harlow & BrentwoodBrowse areas
CRCroydon & surrounding areasBrowse areas
CTCanterbury & coastal KentBrowse areas
DADartford & north KentBrowse areas
EEast LondonBrowse areas
ECCity & central LondonBrowse areas
ENEnfield & nearby townsBrowse areas
GUGuildford & Surrey villagesBrowse areas
HAHarrow, Pinner & StanmoreBrowse areas
HPHemel Hempstead & ChilternsBrowse areas
IGIlford, Woodford & LoughtonBrowse areas
KTKingston, Epsom & SurreyBrowse areas
MEMedway & MaidstoneBrowse areas
NNorth LondonBrowse areas
NWNorth-west LondonBrowse areas
POPortsmouth & West SussexBrowse areas
RGReading & BerkshireBrowse areas
RHRedhill, Crawley & HorshamBrowse areas
RMRomford & surrounding areasBrowse areas
SESouth-east LondonBrowse areas
SLSlough, Windsor & MaidenheadBrowse areas
SMSutton & nearby areasBrowse areas
SSSouthend, Basildon & south EssexBrowse areas
SWSouth-west LondonBrowse areas
TNTunbridge Wells & WealdenBrowse areas
TWTwickenham & west LondonBrowse areas
UBUxbridge, Hayes & SouthallBrowse areas
WWest LondonBrowse areas
WCBloomsbury & central LondonBrowse areas
WDWatford & nearby townsBrowse areas

For boilers and heating, the directory helps prepare your postcode enquiry. The suitable engineer, repair scope and coverage are checked for your actual system and address. Postcode districts are locality references, not precise service boundaries.

Place names: OS Open Names, October 2026, with existing A Brassett locality aliases. Contains OS data © Crown Copyright and database rights 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Contains National Statistics data © Crown copyright and database right 2026.

What happens next

A better picture of the heating fault

01

Separate the functions

Tell us whether heating, hot water or both are affected, and what still works normally.

02

Capture the visible clues

Note the brand, model and displayed code. Leave the casing and internal components alone.

03

Bring the details together

Add your postcode, system type if known and any recent work, then request a repair appointment.

Before you book

Your questions,
clearly answered.

A system can give several clues. The model and the pattern of the fault help put them together.

Speak to us: 0800 037 4915
Is an error code enough to identify the repair?

No. A code is useful information, but its meaning depends on the exact model and the surrounding symptoms. Give the brand, model and what happens to the heating and hot water.

Should I keep resetting the boiler?

Follow the user instructions for your model. If a fault keeps returning, stop repeatedly resetting it and seek advice. Do not open the casing or bypass safety controls.

What if the radiators heat when only hot water is selected?

Describe exactly when this happens and which radiators are affected. Controls, valves and the system arrangement need to be considered; that symptom alone does not establish which component is faulty.

Can I book without knowing the boiler type?

Yes. Give the brand and model if safely visible, and say whether there is a separate hot-water cylinder. We can discuss the remaining details when reviewing your enquiry.

What should I check before anyone carries out gas work?

Check that the attending engineer has current Gas Safe registration and is qualified for the specific work. The engineer's ID card shows the categories of work they are qualified to undertake.

A Brassett, at your fingertips

Let’s stay in touch.

Book a repair, talk to our team or find us on Google and social media. If we have helped you, we would love to hear about your experience.

Read Google reviewsSee customer feedbackLeave a Google reviewTell us about your visitFacebookFollow A BrassettInstagramSee our latest updatesEmail our teaminfo@abrassett.co.ukBook OnlineRequest your repair visit

A clearer description makes a better starting point.

Share your area, boiler brand and the pattern of the fault. Book online or call 0800 037 4915 to discuss the repair enquiry.

Book Online0800 037 4915Engineer visits Monday–Thursday
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