Save 90% on energy costs

The Passive House concept represents today's highest energy standard with the promise of slashing the heating energy consumption of buildings by an amazing 90%. Widespread application of the Passive House design would have a dramatic impact on energy conservation. Buildings are responsible for more than 40% of greenhouse gas emissions annually and more than 50% of all electricity generated by the power plants goes to supply the Building Sector. It has been abundantly clear for some time that the Building Sector is a primary contributor of climate-changing pollutants, and the question is asked: How do we best square our building energy needs with those of our environment and of our pocketbook? In the realm of super energy efficiency, the Passive House presents an intriguing option for new and retrofit construction; in residential, commercial, and institutional projects.

A Passive House is a very well-insulated, virtually air-tight building that is primarily heated by passive solar gain and by internal gains from people, electrical equipment, etc. Energy losses are minimized. Any remaining heat demand is provided by an extremely small source. Avoidance of heat gain through shading and window orientation also helps to limit the cooling load, which is similarly minimized. An energy recovery ventilator provides a constant, balanced fresh air supply. The result is an impressive system that not only saves up to 90% of space heating costs, but also provides a uniquely terrific indoor air quality.

A Passive House is a comprehensive system. "Passive" describes well this system's underlying receptivity and retention capacity. Working with natural resources, free solar energy is captured and applied efficiently, instead of relying predominantly on ‘active’ systems to bring a building to ‘zero’ energy. High performance windows, super-insulation, an airtight building shell, limitation of thermal bridging and balanced energy recovery ventilation make possible extraordinary reductions in energy use and carbon emission.

Today, many in the building sector have applied this concept to design, and build towards a carbon-neutral future. Over the last 10 years more than 25,000 buildings in Europe - from single and multifamily residences, to schools, factories and office buildings - have been designed and built or remodeled to the passive house standard. According to European policy all new buildings in the government sector will need to comply to the Passive house standard by 2018 and all remaining buildings by 2020.

Performance Characteristics of a passive house

Airtight building shell ≤ 0.6 ACH @ 50 pascal pressure, measured by blower-door test

Annual heat requirement ≤ 15 kWh/m2/year (4.75 kBtu/sf/yr)

Primary Energy ≤ 120 kWh/m2/year (38.1 kBtu/sf/yr)

When going through the numbers above one realizes that super windows and doors are essential to achieve the passive house prerequisites. This comes from the fact that doors and windows play a significant factor on the cooling and heating loads which can exceed 50% of the total load.

In our product offering you can find aluminium systems that have been specifically engineered to meet the passive house standard. In addition the systems offer superior performance in terms of Acoustic insulation, burglary resistance, water & air tightness at extreme weather conditions and high wind load bearing.