Emergency response in Cardiff for electric underfloor heating not working
We handle electric underfloor heating not working across Cardiff and Penarth, with certification issued for the work carried out. Cardiff and the CF10–CF24 postcodes are handled by the same electrician throughout.
Do this before we arrive
- Check the board for a tripped device on the heating circuit before assuming the mat has failed. No extra charge attaches to it.
- One of the usual points: note when it last worked and whether any flooring, plumbing or joinery work happened around then.
- Confirm the thermostat is actually calling for heat — set point well above room temperature, and check any holiday or timer mode. This is the part people ask about most.
Do not skip this — underfloor heating circuits require RCD protection, and a mat that fails insulation resistance testing must not be energised again until it has been repaired or isolated permanently.
If a previous certificate exists, electric underfloor heating not working usually starts by checking whether it still reflects reality.
Electric underfloor heating is a resistive mat or cable under the floor finish, a floor sensor, and a thermostat. electric underfloor heating not working tends to be judged on the finish, but the part that matters sits behind the wall and only shows up in the readings. Around CF10–CF24 it is physical damage to the mat, that decides how long the visit takes.
Anything we recommend is tied to a specific finding rather than to a general principle. Anything else found on the day is raised with you before it is touched.
Where an installation has been extended over decades, the sensible approach is to establish a baseline before adding anything else to it. It is one reason we quote after the survey rather than over the phone.
Conditions locally play a part — exposure, damp and the way older Victorian and Edwardian terraces across Cathays and Roath were built all affect what we find. In practice that means checking a failed floor sensor reading before anything is replaced.
If none of this matches what your property is doing, call and describe it — the answer may be simpler than the page suggests. Nothing gets replaced because it looks old. It gets replaced because it fails a test.
Everything below applies to electric underfloor heating not working in Cardiff and its immediate neighbours.
The findings we see most
- Landlords and owner-occupiers in Cardiff both see a failed floor sensor reading open or short circuit.
- A thermostat at end of life, or one whose, which is measurable rather than a matter of opinion.
- A tripped RCD or RCBO on the heating circuit. If it is not this, testing narrows it down quickly.
- Where fittings have been changed over the years, physical damage to the mat, typically from a fixing is the usual culprit.
What is included
- First job on arrival: we measure the mat's resistance and insulation resistance against.
- We that sequence tells us in minutes whether you are, then talk you through what it means in plain terms.
- We we measure the mat's resistance and insulation resistance against and note the result against the circuit it belongs to.
Pricing works like this — mat, sensor and thermostat testing quoted as a single diagnostic visit; parts and repair priced after readings.
Why this comes up in Cardiff
Alongside domestic calls we cover Splott, Leckwith and Cardiff Bay business parks, where the same fault shows up on a larger scale.
Splott, Leckwith and Cardiff Bay business parks is the busiest part of Cardiff for us; the rest of CF10–CF24 is domestic.
We also cover Penarth and Caerphilly on the same rounds as Cardiff.
Questions we get asked
Do you have to lift the floor?
Only if testing shows the mat itself has failed. Sensor and thermostat faults — the majority — are fixed at the wall.
Is this covered by a landlord obligation?
It depends on the tenure and the document required. We will tell you plainly which obligation applies.
Will you show me what you found?
Always. A tripped RCD or RCBO on the heating circuit is easier to understand when you can see it, so we photograph anything hidden.
Can I use my own materials?
If they are suitable and certified, yes. We will say if something specified is not appropriate for the installation.
Do you charge more for Cardiff callouts?
No. Cardiff and the surrounding Penarth and Caerphilly area are inside our standard coverage, so the same callout applies as anywhere else we work.
Speak to the electrician directly
Describe what the property is doing and when it started. We will tell you whether it is urgent or plannable. Mention Cardiff and the electric underfloor heating not working you need when you get in touch.