Line open 24/7 Gas Safe registered · No. 932798 9.86/10 Checkatrade · 147 reviews 4.9/5 Google · 94 reviews Company No. 12326959 24/7 · including bank holidays
020 3674 8514Answered by a person, 24/7 Call WhatsApp

Water Heater Repair in London

Point-of-use heaters, wall-mounted multipoints and immersion cylinders.

Get a fixed quote Or call 020 3674 8514
House cutaway Bathroom Kitchen Boiler cupboard GAS Check the pressure: 1–1.5 bar
No call-out feeNo night or weekend surchargeFixed price before we start12-month workmanship guarantee

, the water heating nobody thinks about until the office kitchen or the annexe runs cold. Diagnosed and repaired with honest arithmetic.

Water heater repair in London: what the price includes

  • 01
    Electric and gas units

    Instantaneous and stored, domestic and light commercial.

  • 02
    Immersion specialists

    Elements and thermostats swapped same-visit, the most common fix on this page.

  • 03
    Scale management

    In hard-water London, scale kills elements young; we descale and advise on protection worth having.

  • 04
    When it is beyond repair

    If a unit is not worth fixing we say so on the visit and swap it like-for-like where that suits. For a new or upgraded water heater, see our water heater installation page.

  • 05
    Point-of-use, multipoint and storage all behave differently

    An under-sink 10 litre unit, a gas multipoint and a vented storage heater fail in completely different ways and take different parts. Telling us the make and the type on the phone is often enough for us to arrive with the part already on the van.

Local conditions we work around

Almost every London water-heater fault we attend traces back to scale. Elements fur until they burn out, thermostats read through a mineral layer and overshoot, and outlet flow drops as the deposits narrow the pipework. The good news is that most of it is repairable, descaling and an element are a fraction of a replacement, and the bad news is that it will recur on the same schedule unless the incoming hardness is addressed at the same time.

Covered across London

Wherever you are in the list below, the price is the same. Open your area for what tends to go wrong there.

IlfordRomfordFinchleyBarnetEnfieldWembleyHarrowStratfordWalthamstowTottenhamWatfordSt Albans All London areas →

Water heater repair in London, your questions

My immersion heater stopped, big job?
Usually an element (£110–£180 fitted) or a thermostat, and worth doing promptly: a failed stat that sticks on can boil a cylinder. If the water went scalding before it went cold, say so on the phone, that's the stat.
Repair or replace a multipoint heater?
Units under eight years usually earn a repair; older units with scaled heat exchangers rarely do. The maths is the same as boilers, repair under a third of replacement, repair wins.
Do you handle commercial units?
Yes, cafés, salons and offices run on multipoints and under-sink heaters; see the commercial pages for contract options.
My water is scalding then cold.
On a storage heater that is a failed thermostat or a spent element letting the top of the tank heat while the rest stays cold. On a gas multipoint it is usually flow-related, a scaled heat exchanger in London being the most common cause.
Repair or replace?
Elements, thermostats and valves are worth replacing on a sound unit. A leaking tank is not repairable, once the cylinder itself has perforated, replacement is the only honest answer and anyone offering to seal it is wasting your money.
Why does it take so long to reheat?
Either the element is scaled, the thermostat is set low, or the unit is undersized for how you are using it. The first is common in hard-water areas and is the cheapest of the three to fix.

Water Heater Repair? Call.

Ring and talk to someone straight away. Photos on WhatsApp help us bring the right parts.

020 3674 8514

Or WhatsApp 07865 292684