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 Kingston upon Thames and South West London.
About this service
No Hot Water but Heating Works in South West 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 South West 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 Maxfix
Why choose Maxfix 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
How it works
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.
Trusted experts
Why choose Maxfix
Gas Safe Registered
Every engineer registered & ID-checked
Manufacturer Accredited [to be confirmed]
[accreditations to be confirmed]
Open 24 Hours, Every Day
Call any time — including nights and weekends
Fixed Price, Always
Agreed before we start — no hourly creep
Frequently asked
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 South West 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 South West London is Gas Safe registered, manufacturer-trained and fully insured to £5m public liability. We'll show our ID on arrival.
Which areas of South West London do you cover for no hot water but heating works?
We provide no hot water but heating works across the whole of South West London, including Kingston upon Thames, Richmond, Wimbledon, Twickenham, Surbiton, Fulham, Putney, Teddington, New Malden, Molesey, Hounslow, Brentford, Isleworth, Long Ditton, Worcester Park, Roehampton, Raynes Park, Morden, Petersham, Motspur Park and the surrounding KT, TW and SW postcodes. Local engineers means short call-out times wherever you are.
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No Hot Water but Heating Works near you
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Free quotes, fixed pricing and Gas Safe engineers across Kingston upon Thames, Richmond, Wimbledon, Twickenham and the rest of South West London.