Why build a passive house?
What a passive house brings you?
- Rational use of fossil fuels
- Reduced CO2 emissions
- Energy Savings
- Smaller energy bills
- High level of comfort indoors
- Better air quality
- Increased luminosity
- Improved acoustic
A new era in construction design
The passive house opens a whole new era in construction, anticipating the challenges of the future and offering a reasonable answer to today’s environmental issues. The Polyurethanes Passive House is certainly not the first passive house ever built, but it does not aim at being a futuristic construction piece; it rather provides a living example that a seemingly normal brick house actually conceals a wealth of engineering marvels and “savoir faire”, so much that the power of an iron would be sufficient to heat it.
The very idea of “sustainable development”
Is it not the essence of sustainable development to seek means to carry on improving day to day life in a way that can be carried on for generations and generations? We currently are at the crossroads because progress can no longer be synonymous with energy intensity. Older energy patterns are no longer sustainable, not only because fossil fuel resources are diminishing but also because CO2 emissions endanger the planet. There is a need for viable, feasible and affordable alternatives. The passive house shows that modern building design can meet the biggest challenges of our times.
A passive house drastically cuts energy consumption (85% less than conventional homes) but certainly not at the expense of comfort and design - much the opposite in fact! A passive house does not limit the type of materials used to build the house, nor does it force its owners to lead a frugal life; a passive house only limits the amount of energy necessary to power a comfortable home, where an enjoyable temperature is maintained all year long by a constant flow of fresh air.
In a nutshell: the passive house is smart
- Passive houses save lots of energy indeed, simply using existing and available technologies such as polyurethane insulation, double or triple glazing with polyurethane frames.
- Passive houses avoid waste. Thermal bridges create heat loss and therefore an increase in energy consumption to keep the house at an enjoyable temperature. Through enhanced airtightness the passive house creates a shield of insulation: the heat stays in during winter and out during summer for improved comfort and well-being.
- Passive houses make the most of daylight using window glazing that keep the heat generated by the sun. The natural power of the sun is used to heat the house, ideally oriented south, and can be an additional power source if solar panels are used.
- Passive houses go hand in hand with renewable energy. By reducing the home’s energy needs the passive house allows exploiting the full potential of renewable energy technologies, such as solar panels and heat pumps. In a passive house, renewable energy is sufficient to power all appliances.
- Passive houses provide a constant flow of fresh air. Mechanical ventilation with heat recovery is used in passive houses to constantly renew fresh air, while recovering up to 90% of the heat in the evacuated air.