Immersion Heater Repairs
Immersion Heater Repairs
When an immersion heater stops producing hot water it's usually the thermostat or a scaled-up element — both replaceable without changing the cylinder.
Immersion Heater Repairs in North London, done properly the first time
We test the element and thermostat, drain the cylinder where needed and fit a replacement immersion heater sized correctly for your cylinder, including the longer elements used in taller unvented tanks.
In North London's hard water, elements scale up and burn out faster than average, so we also check the thermostat setting — running above 60-65°C dramatically shortens element life. We work on both vented and unvented cylinders across Barnet and the surrounding areas.
Why choose Norvex for immersion heater repairs
Premium workmanship, fixed pricing and a service experience built around you.
Element and thermostat tested before replacement
Correct element length for your cylinder
Hard-water scaling checked and advised on
Vented and unvented cylinders covered
Hot water restored the same visit in most cases
A calm, four-step process
From the first call to a tidy handover — no surprises, no jargon, no mess.
Get in touch
Call us or send a quick enquiry — we'll respond within an hour during working hours.
Free survey & quote
An engineer assesses the work and gives you a clear, written, fixed-price quote.
Book a date that suits you
Choose a slot that fits around your schedule — we work evenings and weekends.
Work completed cleanly
Uniformed engineers carry out the work, tidy up fully and walk you through everything before leaving.
Get a fast quote for immersion heater repairs
Free, no-obligation quotes. Most calls answered within 30 seconds.
Why choose Norvex
Gas Safe Registered
Every engineer registered & ID-checked
Manufacturer Accredited
Worcester, Vaillant, Ideal & more
Same-week Appointments
Most jobs booked within 48 hours
5★ Reviewed
Hundreds of verified reviews
Your questions, answered
Why has my immersion heater stopped working?
Most often a failed thermostat or a scaled, burnt-out element. We test both rather than replacing blind.
Is it worth replacing or should I get a new cylinder?
If the cylinder is sound, a new element is far cheaper. We'll tell you honestly if the cylinder itself is on its way out.
What temperature should I set it to?
60-65°C — hot enough for safety against legionella, low enough to slow scaling in hard water.
Can you fit a backup immersion to my cylinder?
If the cylinder has a spare boss, yes — useful as a backup if your boiler fails in winter.
Which areas of North London do you cover for immersion heater repairs?
We provide immersion heater repairs across the whole of North London, including Barnet, Finchley, Muswell Hill, Hampstead, Highgate, Enfield and the surrounding N, NW and EN postcodes. Local engineers means short call-out times wherever you are.
What our customers say
"Quoted, fitted and gone in a day. New boiler, no fuss, new smart thermostat thrown in. Best tradespeople we've had in years."
Sarah, Barnet
"Emergency call at 9pm — engineer on site by 10:30. Sorted the leak that night. Highly recommend."
Michael, Finchley
"Total bathroom renovation. Beautiful job, on budget, finished early. We'll be using Norvex for the kitchen next."
Priya, Highgate
Ready when you are
Book immersion heater repairs with a Gas Safe engineer — fixed pricing, same-week appointments.
Book immersion heater repairs today
Free quotes, fixed pricing and Gas Safe engineers across Barnet, Finchley, Muswell Hill, Hampstead and the rest of North London.