Electric Underfloor Heating Repair in London & Surrounding Areas
Call us:
Service open:
Monday to Sunday
24 hour emergency service
London
3 DOWNBANK AVENUE
BEXLEYHEATH DA7 6RS
Has your electric underfloor heating stopped working or become unreliable?
Whether it’s a cold patch, a faulty thermostat, or a complete system failure, our team of qualified electricians specialise in electric underfloor heating repair across London, Bexleyheath, Bromley, Greenwich, Kent and nearby areas.
With over 10 years’ experience and hundreds of successful repairs completed, we use advanced tools like thermal imaging cameras and precision testers to locate and fix faults with minimal disruption to your flooring.
Call us today on 07947 194 448 for same-day diagnostics and repairs — backed by a 12-month repair guarantee.
Can Electric Underfloor Heating Be Repaired?
Most underfloor heating systems are designed so that faults can be isolated and repaired locally — you don’t necessarily need to rip up entire floors.
Using tools like thermal imaging camera, insulation resistance testers, and milliohm testers, a skilled technician can trace cable resistance anomalies or breaks.
However, repairability depends on system age, how the heating mats or cables were laid, and how much accessibility was accounted for during installation.
In rare cases (e.g. extreme damage or outdated systems) replacement might be more cost-effective. We always explain your options upfront.
Underfloor heating repair testimonials
Watch how delighted these gentlemen were as we were able to pin point exactly where the cause of the problem was using our thermal imaging equipment.
We managed to diagnose and repair their underfloor heating in no time while keeping costs to a minimum.
Like in most cases we just needed to lift one of the tiles from the floor which was carefully replaced afterwards, living no trace of our visit.
Is your underfloor heating letting you down?
Call one of our registered London electricians for a free quote
Before calling an emergency electrician and spending money unnecessarily, you might want to look at a few problem-solving techniques in case your underfloor heating stops working. Let’s have a look at:
Common Causes & What to Check
Below are 5 frequent issues we encounter with electric underfloor heating systems, along with quick checks you can try. Note: always isolate power before you attempt anything.
1. Thermostat Power / Display Fault
- No display? Check fuse / circuit breaker feeding the thermostat.
- Display shows error codes? Refer to manufacturer manual (e.g. “E1”, “E2”).
- Try resetting clock / rebooting unit.
2. Temperature Sensor / Probe Fault
- If the display reads wildly inaccurate temperature, the sensor might be broken or disconnected.
- In dual-sensor systems, sometimes a secondary sensor can be swapped in for testing.
3. Cable Damage or Cut
In renovations or drilling, cables can be nicked or cut.
A repair kit can be used if the damaged section is reachable.
4. Overheating / Safety Cut-Out Activation
Some systems include built-in cut-out or overheat protection; if triggered, they won’t re-engage until reset.
Excess insulation or covering of sensor may cause overheating detection.
5. Degraded System (Age / Material Fatigue)
Older systems may develop insulation breakdown, leading to ground faults.
Underfloor mat joins or connectors may fail over time.
When Your Checks Don’t Solve the Problem
If none of the above restores heat, it’s time to call in a qualified technician. We can perform detailed fault location (with milliohm testing, zonal tests) and issue a full diagnostic report.
Watch the videos below to find out how you can repair your underfloor heating thermostat
Watch the video below to learn how to repair a damaged underfloor heating wire
Our Repair Process – What Happens When You Call Us
When you contact us for underfloor heating repair:
--> Step 1: Initial Call & Pre-Assessment
We ask you a few diagnostic questions (floor type, symptoms, thermostat behavior, how long it’s been off).
--> Step 2: Onsite Inspection & Diagnosis
We arrive with thermal imaging cameras, insulation/milli-ohm testers, and trace detection tools. We map out the fault region with minimal floor lift.
--> Step 3: Fault Location & Repair / Replacement
Once the fault is pinpointed, we excavate only the necessary tile or section, repair cable or replace components, then reinstate flooring.
--> Step 4: Final Testing & Certification
After repair, we retest insulation resistance, continuity, and provide you a full report. We can also provide a 12-month guarantee (or your warranty) where applicable.
Why We Do It This Way
- Minimised disruption to your home
- Clear, transparent pricing
- Full safety compliance & testing
- Documentation for insurance or warranty claims
Is your underfloor heating letting you down?
Call one of our registered London electricians for a free quote
Areas We Serve for Underfloor Heating Repair
We are based in Bexleyheath, London (DA7) but we regularly serve customers across:
Orpington - Dartford - Bromley - Greenwich - Romford -Welling - Erith - Bow - Mile End- Chislehurst - Abbey Wood - Woolwich -Sidcup - Beckenham - Plumstead - Swanley and surrounding boroughs.
If you’re unsure whether we cover your postcode, feel free to call us at 07947 194 448.
Case Study: How We Restored Underfloor Heating in Bromley
Project: Underfloor Heating Repair in Bromley
The Problem: The client’s heating had failed in a kitchen extension built in 2015. Only one zone was getting heat.
Our Approach: We used thermal imaging to isolate the faulty section beneath a corner cabinet, traced and replaced a damaged heating cable, relaid the tile and retested insulation.
Outcome: Heating fully restored within 3 hours, with minimal floor disruption. Client received full test certificate and 12-month guarantee.
FAQs on Electric Underfloor Heating Repair
Will repairing my underfloor heating damage my flooring?
Not at all. We use advanced diagnostic tools to pinpoint the exact fault location so only a small section of flooring needs to be lifted. We carefully remove and reinstate tiles, laminate, or wood, matching grout and finishes wherever possible to leave your floor looking untouched.
Do you need to lift the whole floor to find the fault?
No — that’s a common misconception. With thermal imaging and specialist testers, we can narrow down the issue to a specific area. Only the damaged section is accessed, which saves you time, money, and stress.
Are some floor types harder to repair than others?
Repairs under tiles and stone are usually straightforward. Wood, vinyl, or carpeted floors can also be repaired, though the process differs slightly. During our initial inspection, we’ll advise on the best approach for your flooring type.
Is repair always cheaper than replacement?
Usually yes, especially when faults are localized, but if multiple zones fail or the system is very old, replacement might be more cost-effective. We’ll always explain both options.
Do repairs void my warranty / guarantee?
It depends on the original manufacturer’s terms. We can check and advise. In many cases, repairing rather than replacing helps preserve warranties.
How long does a repair take?
Most repairs are completed within 2–5 hours (depending on complexity). Larger or multi-zone jobs may take a full day.
Is underfloor heating repair safe?
Yes—as long as it’s done by qualified electricians. We isolate the circuit, conduct proper continuity and insulation tests, and follow electrical regulations (BS 7671, etc.).
What tools do you use?
Thermal imaging cameras, insulation resistance testers, milliohm / continuity testers, cable trace equipment, diagnostic interface (for smart thermostats), etc.
Ready to Restore Your Underfloor Heating?
If your underfloor heating has failed or is acting erratically, don’t wait in the cold. Call us now on 07947 194 448 (24/7).
All work is performed by City & Guild qualified electricians, and we are part of the British Gas Local Hero programme.
We offer full diagnostic reports and a 12-month repair guarantee (or longer, depending on parts).
Get a free no-obligation quote now — same-day appointments often available.
Other electrical services we provide
Domestic
Commercial
Excel Electricians LTD
3 Downbank Avenue
London
DA7 6RS
Tel: 07947 194448
Email: info@excelelectrician.co.uk
Open: Monday-Sunday 24/7
