No Hot Water but Heating Works
No Hot Water but Heating Works
Hot water gone but radiators still warm? That points to a specific set of faults — and we diagnose them the same day across Barnet and North London.
No Hot Water but Heating Works in North London, done properly the first time
When heating works and hot water does not, the fault is almost always in the part of the system that only serves hot water: a stuck diverter valve on a combi, a failed hot water flow sensor, a scaled plate heat exchanger, or on a cylinder system a failed motorised valve, cylinder thermostat or immersion element.
Hard water across North London scales combi plate heat exchangers steadily — lukewarm water that goes hot briefly then cools is a classic scaled-exchanger symptom.
We identify which of those it is on the visit, quote a fixed price for the fix, and where scale is the cause we talk to you about protecting the new part so you are not replacing it again in two years.
Why choose Norvex for no hot water but heating works
Premium workmanship, fixed pricing and a service experience built around you.
Same-day diagnosis on most calls
Diverter valves, sensors and exchangers replaced
Cylinder, motorised valve and thermostat faults covered
Hard-water protection advice included
Fixed price before work starts
12-month guarantee on parts and labour
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 no hot water but heating works
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 is my hot water lukewarm but the heating fine?
On a combi that usually means a partially stuck diverter valve or a scaled plate heat exchanger. Both are common in hard-water North London.
Is a diverter valve worth repairing?
On a boiler with years of life left, yes — it is a standard repair. On a very old appliance we will give you the honest comparison against replacement.
I have a hot water cylinder, not a combi.
Then we check the motorised valve, cylinder thermostat, immersion element and wiring centre — the heating side working narrows it down quickly.
Are your no hot water but heating works engineers Gas Safe registered?
Yes — every engineer working on no hot water but heating works in North London is Gas Safe registered, manufacturer-trained and fully insured to £5m public liability. We'll show our ID on arrival.
Which areas of North London do you cover for no hot water but heating works?
We provide no hot water but heating works 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 no hot water but heating works with a Gas Safe engineer — fixed pricing, same-week appointments.
No Hot Water but Heating Works near you
Book no hot water but heating works today
Free quotes, fixed pricing and Gas Safe engineers across Barnet, Finchley, Muswell Hill, Hampstead and the rest of North London.