AK Plumbing London
Water heater repairs in London
No hot water, an immersion that will not heat, or a cylinder fault that has returned after repair? Tell us what is happening so we can discuss the appropriate assessment.
Share your postcode, equipment and symptoms. Confirm coverage, availability and the visit charge before booking.
Tell us about the hot-water problem
Overheating or water near electrics?
Keep away from wet electrical equipment. For steam, very hot discharge or suspected cylinder overheating, switch off the heat sources using normal controls only if safely accessible, keep clear and seek urgent professional help. Leave discharge pipework unobstructed. Do not remove covers or bypass safety controls.
If you smell gas or suspect a gas or carbon monoxide leak, leave the property and call 0800 111 999 from a safe place. Avoid electrical switches and flames. Use 999 for a medical emergency.
Which symptom best describes your enquiry?
The immersion is on, but the water stays cold
Tell us what the normal controls show and whether boost, timed heating or both have stopped working. Include any recent meter, timer or thermostat work. A light on a switch is useful information; it is not enough to identify which part needs replacing.
Immersion, boost and timer fault guideA separate cylinder has stopped delivering hot water
Say whether water still flows from the hot taps, whether every outlet is affected and what normally heats the cylinder. If the radiators work but stored water stays cold, include that detail. You do not need to know the name of a valve to request help.
No hot water from a cylinderThe cylinder is dripping or discharging
Describe whether water passes through the small open funnel beside the cylinder, escapes onto the floor, or appears at an outside pipe. Mention any heat, steam or worsening flow straight away. Take photographs only from a safe position without opening covers.
Tundish discharge: what to reportMake the first enquiry useful
Have the model label, postcode and a description of what still works ready. Tell us whether the hot water is always cold, only heats overnight, responds to boost, or runs out sooner than expected. Include the last time it worked normally and any work carried out since.
A photograph of accessible controls can help explain an unfamiliar system. Do not open electrical panels, alter safety valves or move equipment to get a picture. If you are unsure of the model, say so.
Already had a repair?
Bring the previous report or invoice and the name of the part replaced. Explain whether the symptom changed or returned after a period of working normally. Contact the original repairer about follow-up arrangements and check any applicable cover before authorising further work.
For a fault tied to a timer or overnight schedule, ask how the completed repair will be checked against that pattern. Restoring hot water once does not by itself explain a recurring scheduling problem.
Agree diagnosis and repair as separate decisions
Before the visit
Confirm the assessment charge, VAT treatment, access requirements and which equipment the appointment covers. Mention electrical trips, a building-managed supply or an unvented cylinder so the work can be assigned appropriately.
Before parts are fitted
Ask what finding supports the repair, which part is required and whether draining, electrical work and testing are included. Confirm extra labour or return-visit charges and how approval is obtained.
If replacement is proposed
Ask why the heater or control cannot be repaired separately. Compare the complete scope, including access, removal, commissioning and making good. A loss of hot water alone does not establish that the whole cylinder needs replacing.
Questions before arranging help
Should I book an electrician, a plumber or a boiler engineer?
Describe the equipment and fault before booking. The work may involve electrical supply or controls, cylinder components or a separate boiler. Confirm that the appointment includes the relevant competence and diagnostic scope; work on unvented cylinders and gas appliances has additional requirements.
Can you quote for a new immersion element from a photograph?
A label or photograph can help identify equipment, but it does not establish that the element is faulty. Ask for the assessment charge and then agree a repair price once the cause and correct part are identified.
Is a cylinder service the same as repairing no hot water?
No. Routine maintenance and diagnosis of a reported fault are different scopes. Mention the loss of hot water when booking rather than assuming a service includes electrical testing, parts and repairs.
Do you guarantee a same-day repair?
Availability, access and parts affect the appointment and completion. Call to discuss the current options; this page does not promise an arrival or repair time.
Can I request help for a rented flat?
Report the fault to your landlord or managing agent and identify who can approve the visit and repair costs. Provide access details and explain if communal equipment or a building manager is involved.
Choose the relevant next step
Discuss the problem before choosing a part
Call to check availability or request a callback with your postcode and symptoms. Sending the form is an enquiry; the appointment and scope still need to be confirmed.