Energy used by Underfloor Heating

In most cases underfloor heating consumes less energy than traditional radiators or air conditioning when it is the primary form of central heating.  This does depend on the type of system, and assumes correct installation and adequate insulation.

Underfloor heating requires a lower temperature, normally around 50 degrees, to heat a room to the same level as traditional heating, which is run at 60 degrees or higher. This efficiency is mainly due to the way that it works through heat conduction, as well as heat radiation. The room feels warmer with less heat because there are no draughts and warm air is evenly distributed. Conventional systems use convection, heating air which rises to the ceiling and sinks again as it cools. This creates a chilly floor and hot ceiling. In well insulated, newly built homes, energy savings of around 40% can be made, using underfloor thermostats for each area, in comparison to traditional heating.

Electric underfloor heating works in the same way as wet systems, but electricity, an inefficient use of the fossil fuels from which it is generated, tends to be more expensive than running a water system from a gas boiler. In some situations, installing an electric underfloor heating kit can an energy efficient option, usually as the sole source of heat in a small conservatory or extension which is not used all the time. Used as under tile heating, or under stone, it can be a very effective addition to complement the main central heating.

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