No Hot Water but Heating Works in Barnet
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.
Norvex's Gas Safe heating engineers and plumbers cover the whole of Barnet — from High Barnet down to Whetstone — with same-week appointments and 2-hour emergency response.
No Hot Water but Heating Works for Barnet homes
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.
Barnet's mix of Victorian terraces, post-war semis and modern flats means heating systems vary enormously across the borough. Our engineers know the area's housing stock inside out, from rear-extension combi installs in EN5 to large family system boilers in Hadley Wood.
Areas of Barnet we cover: High Barnet, New Barnet, East Barnet, Hadley Wood, Cockfosters.
Why Barnet chooses 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
Get a quote for no hot water but heating works in Barnet
Free, no-obligation quotes. Most calls answered within 30 seconds.
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 parts of Barnet do you cover for no hot water but heating works?
We cover the whole of Barnet and the surrounding EN5, EN4, N20 postcodes, including High Barnet, New Barnet, East Barnet, Hadley Wood. Local engineers means short response times across every street.
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
Book no hot water but heating works in Barnet today
Fixed pricing, Gas Safe engineers and a 12-month workmanship guarantee — across Barnet and the rest of North London.