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Underfloor heating and energy

You can save energy with waterborne underfloor heating as the heat will be more evenly distributed compared to other heating systems.

As a result, the average temperature in the system can be kept lower compared to radiators.

To decrease the energy consumption the property must have adequate insulation, and the indoor temperature must be decreased. The heat will vanish down into the ground unless there is sufficient insulation in the building.

New-builds are likely to have adequate insulation, but if you are renovating a building you should examine the insulation. We recommend a minimum of 200 mm, but preferably 250- 300 mm insulation.

Heat pumps and solar panels are much more efficient combined with low temperature underfloor heating systems compared to heating systems working with higher water temperatures. For example, a heat pump could use up to 30 % less energy when the water temperature is lowered from 55°C (radiators) to 35°C (underfloor heating).

In large premises, such as storage rooms and sports facilities, the average temperature can be lowered further in order to increase the energy savings.

As underfloor heating systems work with a low temperature, losses in the flow pipes are also decreased. Additionally, heat pumps and solar panels are much more effective in these systems compared to systems working with a higher water temperature.

Source: Energimyndigheten

Golvvärme och energi