Underfloor Heating Repairs & Maintenance in Addlestone
If your underfloor heating has stopped warming properly, some rooms feel colder than others or the system keeps losing pressure, London Plumbers 24/7 can help investigate the problem.
We provide repair, fault-finding and maintenance for wet, water-fed underfloor heating systems in Addlestone and the KT15 area.
Underfloor heating faults are not always caused by the pipework beneath the floor. Problems can come from the manifold, pump, thermostat, actuator, controls, trapped air or poor water circulation. For that reason, we prefer to diagnose the system properly before recommending parts or repairs.
Underfloor Heating Not Working Properly?
The first sign of a problem is often simply that the floor does not feel as warm as it used to.
You may notice:
One room not heating
Several cold areas across the floor
One heating zone working while another stays cold
The system taking much longer to warm up
A thermostat calling for heat but nothing happening
Low or falling system pressure
Unusual noises around the manifold or pump
Some rooms becoming much warmer than others
The boiler working but the underfloor heating staying cold
These symptoms can have several different causes.
Rather than changing parts unnecessarily, the system needs to be checked to establish where the fault actually is.
What We Check During an Underfloor Heating Call-Out
The way we approach the job depends on the system and the problem you are experiencing.
Checks may include:
System pressure
Underfloor heating manifold
Flow meters
Actuators
Zone valves
Circulation pump
Thermostats
Heating controls
Temperature sensors
Water flow through individual circuits
Air trapped within the system
Signs of leakage
Connections around the manifold
Communication between controls and heating zones
Sometimes a problem that looks complicated turns out to be a relatively straightforward control or circulation fault.
Other faults require more investigation.
We will explain what we find before recommending the next stage of work.
Cold Rooms or Uneven Floor Temperatures
A common reason for calling us is that part of the underfloor heating is working while another area remains cold.
For example, the kitchen may warm normally while another room connected to the same system does not.
This can happen when:
A heating zone is not opening
An actuator has failed
Flow through one circuit is restricted
The system needs balancing
Air is trapped in a loop
A thermostat or sensor is faulty
The manifold is not distributing water correctly
The important thing is to determine whether the problem affects one individual zone or the system as a whole.
That can considerably narrow down the possible cause.
Manifold Problems
The manifold is one of the most important parts of a wet underfloor heating system.
It distributes heated water through the individual pipe circuits serving different rooms or zones.
Because so much of the system comes together at the manifold, it is often one of the first areas worth checking when underfloor heating is not behaving normally.
Problems can include:
Sticking valves
Faulty actuators
Leaking connections
Damaged flow meters
Poor flow through individual circuits
Air within the system
Pressure problems
Circulation issues
If possible, make sure the manifold is accessible before the appointment.
In many homes it is installed inside a cupboard, utility area or purpose-built enclosure.
Thermostat and Zone Problems
Modern underfloor heating systems commonly divide the property into separate heating zones.
Each zone may have its own thermostat and actuator.
This allows different rooms to be controlled independently, but it also means a fault with one component can sometimes stop an individual room from heating even though the rest of the system is working normally.
If one particular room in your Addlestone property has stopped heating, let us know whether:
The thermostat display is working
The thermostat is calling for heat
Other rooms are warming normally
The problem started suddenly or gradually
Any controls or thermostats have recently been changed
This information can be useful when diagnosing the fault.
Underfloor Heating Losing Pressure
If the heating system repeatedly loses pressure, simply topping it up may not solve the underlying problem.
Pressure loss can sometimes be associated with:
Visible leaks around the manifold
Connections or valves
Other parts of the heating system
Expansion or pressure-related components
Hidden leaks
Previous repair work
The cause needs to be investigated rather than continually repressurising the system.
If you have noticed water around the manifold or another part of the heating system, send us a photograph when making your enquiry.
Underfloor Heating After Building or Renovation Work
Heating problems can sometimes become noticeable after building, decorating or renovation work.
If something has recently changed at the property, tell us when you contact us.
Useful information includes whether:
A thermostat has been replaced
Electrical work has been carried out
The boiler has been changed
The heating system has been drained
Radiators or pipework have been altered
Flooring has recently been replaced
An extension or refurbishment has affected the heating controls
Knowing what changed before the fault appeared can help with diagnosis.
Servicing and Maintenance
You do not necessarily have to wait until the underfloor heating stops working completely.
If the system has not been checked for some time or its performance has gradually deteriorated, maintenance can help identify issues before they become more disruptive.
Depending on the system, maintenance may involve checking:
Manifold condition
System pressure
Flow rates
Actuators
Controls
Circulation
Pump operation
Heating zones
Visible connections
General system performance
We will not recommend replacing components simply because they are old. Any recommendation should be based on the condition and operation of the system.
Underfloor Heating in Rental Properties
We also attend underfloor heating faults for landlords, letting agents and property managers in Addlestone.
A tenant may report something as simple as:
“the bedroom floor isn't heating”
or
“the heating works downstairs but not upstairs.”
The cause may not be obvious without checking the system.
When arranging a visit to a rented property, please provide:
Property address
Tenant or access details
Description of the fault
Photos of the manifold if available
Photos of the thermostat or controller
Details of any previous repair attempts
Where agreed, access arrangements can be coordinated with the tenant.
Before Booking a Visit
A few details can make it much easier to understand the system before attending.
If possible, send us:
Your Addlestone property address
A photograph of the underfloor heating manifold
A photograph of the thermostat or controls
Boiler make and model if known
Which rooms are affected
Whether the problem affects all zones or only one
Whether the pressure is dropping
Whether any work has recently been carried out on the heating system
Do not worry if you do not know the technical details.
A basic description of what the heating is doing — or not doing — is usually a useful starting point.
Repair Rather Than Guesswork
Underfloor heating systems contain several components that can produce very similar symptoms when they fail.
For example, a cold room does not necessarily mean there is a problem with the pipe beneath the floor.
It could be a thermostat, actuator, flow issue or control problem.
That is why our approach is to identify the fault first and then discuss the appropriate repair.
Where a component can reasonably be repaired or adjusted, replacement should not automatically be the first option.
Do You Work on Electric Underfloor Heating?
This service is primarily for wet, water-fed underfloor heating systems connected to a central heating system.
If you have an electric underfloor heating system, tell us when contacting us so we can confirm whether the appropriate electrical service can be arranged.
Underfloor Heating Services Across Addlestone
We attend underfloor heating problems in Addlestone and the surrounding KT15 area.
If your property is close to Addlestone but outside KT15, send us the postcode and we can confirm whether we cover the address.
Arrange an Underfloor Heating Visit
If your underfloor heating is not warming correctly, has developed cold zones, is losing pressure or has another fault, contact London Plumbers 24/7.
Send us the Addlestone property address and, where possible, photos of the manifold and heating controls.
We can then discuss the problem and arrange the appropriate next step.
Contact London Plumbers 24/7 for underfloor heating repairs and maintenance in Addlestone.
Frequently Asked Questions
Why is only one room not heating?
If the rest of the system is working normally, the problem may relate to that individual heating zone. Possible causes include an actuator, thermostat, valve or flow problem.
Can you repair an underfloor heating manifold?
Yes. Problems involving manifold components, valves, actuators, flow meters and connections can be investigated and repaired where appropriate.
Why does my underfloor heating keep losing pressure?
There are several possible causes. The system should be inspected to identify where the pressure loss is coming from rather than repeatedly topping it up.
Can trapped air stop underfloor heating from working?
Air within the system can affect water circulation and heating performance. Whether this is the cause needs to be confirmed during diagnosis.
Do you work on wet underfloor heating?
Yes. This service covers wet, water-fed underfloor heating systems.
Do you work with landlords in Addlestone?
Yes. We attend owner-occupied, rental and managed properties.
Can you diagnose a single cold heating zone?
Yes. If one zone is not working while others are operating normally, we can investigate the controls, actuator, valve and water flow serving that area.
What should I send before booking?
If possible, send the property address, photos of the manifold and controls, and a short description of which rooms or heating zones are affected.