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The winter garden has an outer skin that is entirely different from that of a house or apartment. Houses have two external and two internal walls constructed of stone, a cellar and a well-insulated fixed roof. This material stores warmth or cold and is very slow to react to the external weather influences. Approximately 60 watt/m2 is required to heat this space.
A winter garden has three external walls made of glass, as well as a glass roof and tile floor, which react immediately to any kind of weather. As soon as the sun heats up the winter garden, the heating is reduced or switched off entirely. However, in the night or when the weather is cold and cloudy, the heating requirements are four times greater (approx. 320 watt/m2).
In-floor heating alone is not recommended, because it reacts too slowly, which can lead to condensed water sweating. We recommend the use of heat pumps, which heat, cool, dehumidify and also purify the air. In terms of ecological and economic issues, this represents an ideal alternative.
A winter garden with 20m2 requires around 7 kilowatts for heating, while a house with normal insulation would require 1.6 kilowatts for the same surface area.