Electric Underfloor Heating Installation
Professional electric underfloor heating installation by qualified electricians. Mat and cable systems with thermostat control. Dedicated circuit. Qualified and insured.
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Electric Underfloor Heating Installation
Qualified electrician
Same-day service
Most jobs matched within hours.
Upfront pricing
Clear quotes before work starts.
Qualified pros
NICEIC & NAPIT registered.
Pay when done
Funds held until you're happy.
How it works
Survey and circuit planning
The electrician assesses the consumer unit for available capacity and spare ways. They calculate the total load based on the room size and heating mat wattage (typically 150-200W/m²) and specify the correct cable size, MCB rating, and RCD protection.
Thermostat location and cable route
The thermostat position is agreed — usually on a wall near the door at standard switch height. A cable route is planned from the consumer unit to the thermostat location, and from the thermostat down to floor level where the cold tail of the heating mat connects.
Heating mat or cable layout
The heating mats or loose cables are laid out across the floor area by the floor installer, following the manufacturer's spacing and layout guidelines. The electrician may assist with positioning to avoid damage during installation. A floor temperature sensor is embedded in the screed or adhesive between heating runs.
Electrical connection
The cold tail from the heating mat is connected to the thermostat. The floor sensor is wired to the thermostat sensor terminals. The supply circuit from the consumer unit is connected to the thermostat supply terminals. All connections are made with the correct torque settings.
Testing and commissioning
The heating circuit is tested for insulation resistance (before and after floor covering is laid), earth continuity, and correct operation. The thermostat is programmed and the floor sensor calibrated. The full circuit is tested to BS 7671 standards and an EIC is issued.
What's included
What's involved
Electric underfloor heating uses thin heating mats or loose cables embedded beneath the floor finish to provide radiant warmth from the ground up. The system is connected to a dedicated circuit at the consumer unit and controlled by a programmable thermostat. Electric UFH is ideal for bathrooms, kitchens, and conservatories — spaces where warm floors make the biggest comfort difference. The electrical installation covers the circuit from the consumer unit, thermostat wiring, and connection of the heating mats or cables.
Electric underfloor heating requires a dedicated circuit with correctly rated protection at the consumer unit. The heating mats carry mains voltage and are installed beneath floor tiles or other coverings — any wiring fault is inaccessible once the floor is laid. The thermostat connection, floor sensor wiring, and circuit protection must be installed by a qualified electrician. Work involving a new circuit from the consumer unit is notifiable under Part P of the Building Regulations.
Get a personalised quote
Typical cost: £400–£1,200per room
Every job is different — pricing depends on your property, location, and specific requirements. Describe what you need and a qualified electrician will quote you directly.
How long does it take?
Half a day for the electrical work on a single room — circuit from consumer unit, thermostat installation, and connection. The heating mat installation is typically done by the tiler. A full day if multiple rooms are being connected or if the consumer unit needs modification.
Regulations & safety
Safety notice
Electric underfloor heating mats must be tested for insulation resistance before the floor covering is laid, and again after installation is complete. A damaged mat beneath tiles is extremely difficult and expensive to repair. Your electrician will record test results at each stage.
Never cut, shorten, or overlap heating cable. The cable is manufactured to a specific resistance — altering its length changes the wattage and can cause overheating and fire. If the mat is too large for the room, the excess must be returned to the manufacturer.
The thermostat must include a floor temperature sensor to prevent overheating. Without a floor sensor, the thermostat relies only on air temperature and may allow the floor to reach temperatures that damage certain floor coverings (particularly engineered wood and laminate, which have maximum temperature limits of 27°C).
Part P of the Building Regulations (Approved Document P)
A new circuit from the consumer unit for underfloor heating is notifiable electrical work. It must be carried out by an electrician registered with a competent person scheme, or inspected by Building Control.
BS 7671:2018+A2:2022 (IET Wiring Regulations)
The underfloor heating circuit must comply with the Wiring Regulations, including circuit protection, cable sizing for the load, and the requirements for floor heating systems (Section 753 covers embedded heating systems).
IET Wiring Regulations — Section 753 (Heating Systems)
Section 753 of BS 7671 specifically covers floor and ceiling heating systems, including requirements for protection against overheating, spacing of heating elements, and temperature limiting devices.
What to expect
Having issues with your existing installation?
Already have a electric underfloor heating and having issues? Check our troubleshooting guides.
Frequently asked questions
Is electric underfloor heating expensive to run?
Can electric underfloor heating go under any floor type?
Do I need insulation boards under the heating mat?
What happens if the heating cable breaks?
Can I install electric underfloor heating in a bathroom?
Does the electrician install the heating mat?
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