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Electric underfloor heating - The top 5 questions, answered!​

Electric underfloor heating - The top 5 questions, answered!​

We’ve compiled a list of the top 5 most common questions we get asked about electric underfloor heating. If your question is not covered, you can ask us directly via our contact page or head over to our FAQs. However, ‘Electric Underfloor Heating: The top 5 questions, should break some of those electric underfloor heating myths.

1. Is electric underfloor heating expensive to run?

The daily cost of running your electric underfloor heating system will also vary depending on your chosen installation build-up, whether you have included heat loss reducing insulation, your chosen running temperature and program settings and also the current cost of electricity in your region. But, on average, and in a well-insulated environment, it costs less than the average takeaway coffee to run ThermoSphere electric underfloor heating in a 2m2 bathroom for a month!

Why not use our running cost calculator to find to see roughly how much it would cost you to run ThermoSphere electric underfloor heating.

2. What are the real differences between electric underfloor heating and radiators?



  • Inefficient convection heating
  • Traditional radiators distribute heat unevenly throughout a room, resulting in drafts, hot heads and cold feet.
  • Heating this way usually means your thermostat has to be set to a higher temperature to achieve the desired comfort level, which increases heat loss and energy bills.

Underfloor Heating:

  • Improved efficiency and comfort
  • Underfloor heating provides a comfortable, even temperature throughout your room.
  • If the heating system is under the whole floor you can save money through lowering the ambient temperature by 2°C without loss of comfort!
  • You can also free up valuable wall space creating more freedom of design for your interiors.


3. Does electric underfloor heating take long to install?

We’ve made all of our underfloor heating systems simple and easy to install. In fact the majority of our electric underfloor heating solutions can be installed in just one day (depending on the size of the space). A general rule of thumb is to allow time for adhesives to fully cure before switching your system on. Which usually takes 1-2 weeks.

4. Is electric underfloor heating safe in bathrooms?

Absolutely yes! It is perfectly safe to install either our mesh or membrane underfloor heating system in a bathrooms. ThermoSphere Mesh is protected to IP68 standards which means it can be placed in zone 1 of a bathroom with no issues. The heating cables have a tough fluoropolymer coating on the outside and internal conductors, a continuous armoured earth sheath and multi-strand twin conductors. These types of system must be protected by a suitably rated RCD. ThermoSphere Membrane can be used as a fully waterproof solution which is ideal for wetrooms. Remember to install the thermostat away from water sources.

5. What happens if something goes wrong with my electric underfloor heating?

There are no moving parts to an electric underfloor heating system and cable faults are extremely rare, and generally occur if damaged during the installation process. A damaged cable can usually be located and repaired with minimal disruption to your floor or wall. We provide total peace of mind with our lifetime guarantee on the ThermoSphere mesh, membrane and foil electric underfloor heating solutions.

So there you have it! Our top 5 frequently asked questions about electric underfloor heating, answered!

Got any questions about electric underfloor heating?

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