What exactly is a low-energy house?
Low energy houses are called heated buildings, where the need for heating provided by one of the standardized calculations and with respect to 1m2 of floor area heated does not exceed 50 kWh per year.
Low energy VELOX
The low demand for heating of houses built with VELOX technology are the result, not only of the excellent thermal insulation properties of walls with optional insulation of up to 200 mm, but also the accumulation and thus the thermal inertia of the walls several times higher than conventional building materials.
This combination allows you to accumulate heat from sunlight through glazed areas during the day and in the evening return it back into the living space. This has a reverse effect in the summer where accumulated evening and night time cold air helps maintain a pleasant room temperature without additional air conditioning.