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How do I know if I have an electric or water-based (hydronic) underfloor heating?

Generally, there are two types of underfloor heating: electric and water-based (hydronic). Both these types of underfloor heating are usually controlled by one thermostat per room.

Electric underfloor heating systems warm the floor with the help of electric current. The current runs through an electrical heating mat under the floor and is converted into heat. The room thermostat controls the temperature in the room by switching the current through the wires of the electric underfloor heating mat.

When replacing a room thermostat connected to an electric underfloor heating system, it is, therefore, important to ensure that the switched current can be handled by the tado° Smart Thermostat.

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Water-based (hydronic) underfloor heating systems warm the floor with help of warm water running through a pipe positioned under the floor. The room thermostat controls a valve that regulates the flow of water in the room. This valve is usually found at the manifold (a collection of pipes that regulate the water flow of the underfloor heating system).

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If your room thermostat is connected to a manifold like in the picture above, it controls a water-based underfloor heating system. Or, if the heat for the underfloor heating is produced by a central boiler or heat pump, you can be sure that your underfloor heating system is water-based.

If you are not sure whether your underfloor heating is electric or water-based, please contact us with specific product information about your installed underfloor heating system.


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