AK Plumbing London
Hot water cylinder replacement in London
A leaking cylinder, repeated hot-water faults or storage that no longer suits the household needs an assessment before a replacement is chosen. Ask AK Plumbing about a cylinder survey and replacement quote. Share your postcode so we can confirm coverage and appointment availability.
Have your postcode and a short description ready. Confirm availability, the visit charge and any additional work before booking.
Request a cylinder replacement quote
Before arranging a visit
Water discharging through a tundish, unusually hot water or steam needs urgent professional advice. Turn off the cylinder heat sources, such as the boiler hot-water setting and immersion heater, at their normal controls only if you can do so safely. Keep clear of hot discharge and leave the discharge route unobstructed. Do not cap pipes, adjust safety valves or remove electrical covers. If you cannot safely reach the controls, keep away and seek urgent help.
Does the cylinder need replacing?
A repair may be enough
No hot water does not automatically mean the cylinder body has failed. The heat source, immersion heater, controls, valves or expansion arrangements may need attention. Identify the cause before comparing a component repair with a complete replacement.
A replacement assessment is appropriate
A confirmed cylinder-body leak, an unsuitable storage capacity or repeated uneconomic repairs can justify replacement. Water on the floor can also come from a connection or another component, so the leak source must be established first.
Keep the decision specific to your home
An indirect cylinder is heated by a separate source such as a boiler; a direct cylinder uses electric immersion heating. Unvented and vented systems have different installation requirements. Do not order a new unit solely by matching the old litre capacity.
What the replacement survey needs to cover
Hot-water demand and heat source
Provide the number of bathrooms, people and likely simultaneous showers, plus the current heat source. Recovery time, usable hot water and controls matter alongside storage size. Mention any planned heat-pump installation before a specification is selected.
Water supply, space and access
The assessment needs to consider supply flow and pressure, cylinder dimensions, access for removal and delivery, structural support and working space. Moving the cylinder can add pipework, electrical and discharge-route work.
Safety and installation requirements
Unvented systems need appropriate safety controls and a suitable discharge arrangement. Ask who will carry out the work, what relevant competence they hold, and what commissioning and Building Regulations documentation applies to the proposed installation.
Compare cylinder replacement quotes on the same basis
Specify the equipment
Ask for the manufacturer, model, capacity and heating arrangement, including the controls and valves supplied. A product warranty is different from a workmanship warranty; request the actual terms rather than relying on a headline duration.
Include the installation work
Confirm removal and disposal, delivery, pipework changes, electrical work, access work and commissioning. Ask whether making good cupboards, decoration or flooring is included. Agree the full total before work begins. AK is not VAT-registered, so no VAT is added.
Plan the interruption
Ask how long the property is expected to be without hot water, whether cold water will also be interrupted and what happens if hidden defects are discovered. Access in flats may need building-management approval; agree this before the appointment.
Questions before booking
How much does a hot-water cylinder replacement cost?
The unit, heating arrangement, access and alterations determine the quote. Send the model and photographs of the installation when requested, then confirm whether an on-site survey is needed. This page does not publish a fixed price without a defined scope.
Can a larger cylinder improve shower pressure?
Larger storage can help hot-water capacity, but pressure and flow depend on the system and water supply. A larger cylinder alone does not guarantee stronger showers.
Should I replace a cylinder because the immersion heater failed?
Not automatically. An engineer should establish whether the heater can be replaced safely and whether the cylinder is otherwise serviceable before recommending a complete replacement.
What records should I keep?
Keep the product details, commissioning and applicable compliance documents, invoice, warranty terms and maintenance records. Follow the manufacturer maintenance schedule for the installed model.
Related help
Further reading: Megaflo manufacturer advice on cylinder care.
Request a cylinder replacement quote
Tell us what is happening and where the property is. Call for current availability or send the form above to request a callback.