There isn’t an accurate definition of this term. Due to the variations in national standards, it varies from one country to another. In Germany, a low energy house (Niedrigenergiehaus) has an energy spending limit of 50 kWh/m2 for heating per year.
In Switzerland, low energy houses are defined by MINERGIE standard and their limit must not exceed 42 kWh/m2 for heating per year. An average low energy house in those countries now spends between 20 and 30 kWh/m2 for heating per year.
Low energy houses have high levels of insulation, energy efficient windows, and low levels of air flow and heat renewal in the ventilation systems. Standards for active or passive solar technology can also be used in this purpose, as well as the technologies for recycling hot water already used for bathing or dish washing.
Our Mega and Termo building standards meet all the terms for low energy constructions.
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