Thermostat Not Working
Thermostat Not Working
Thermostat not controlling your heating? We diagnose and replace wired, wireless and smart thermostats across Kingston upon Thames and South West London.
About this service
Thermostat Not Working in South West London, done properly the first time
When heating runs constantly, never comes on, or ignores the schedule, the fault is usually the thermostat, its wireless pairing, the programmer, or the motorised valve and wiring centre it is meant to be switching.
Wireless thermostats lose pairing, batteries fail quietly, and older programmers drift. But a stuck motorised valve produces exactly the same symptoms, which is why swapping the thermostat blindly often does not fix it.
We test the chain properly — thermostat, programmer, wiring centre, motorised valve, boiler demand — then repair or replace what is actually at fault, including supply and installation of smart thermostats if you want better control.
Why Maxfix
Why choose Maxfix for thermostat not working
Premium workmanship, fixed pricing and a service experience built around you.
Full control-chain testing, not part swapping
Wired, wireless and smart thermostats fitted
Motorised valve and wiring centre faults fixed
Zoning and scheduling set up for you
Lower bills through correct control
12-month workmanship guarantee
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 thermostat not working
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 heating always on regardless of the thermostat?
Commonly a stuck motorised valve or a wiring centre fault rather than the thermostat itself. We test both before recommending anything.
Can you fit a smart thermostat?
Yes — we install and configure the main smart thermostat brands and set the schedule and zones up with you before we leave.
Will a smart thermostat save money?
It can, mainly by heating rooms only when they are used. The saving depends on how the household actually lives, so we will be realistic rather than promise a figure.
Are your thermostat not working engineers Gas Safe registered?
Yes — every engineer working on thermostat not working 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 thermostat not working?
We provide thermostat not working 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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Free quotes, fixed pricing and Gas Safe engineers across Kingston upon Thames, Richmond, Wimbledon, Twickenham and the rest of South West London.