Passive house features.
What distinguishes a passive house.
A passive house is a building that has a much lower demand for energy consumption compared to energy-saving buildings. The basic criterion for assessing whether a building meets the parameters of a passive house is the energy consumption needed to heat the building, it is 1.5 liters of oil per m2 per year.
In general, when considering the concept of building a passive house, one should be aware, that a passive house is not the same as an energy-efficient house.
The construction of a passive house requires adherence to strict criteria and any deviations from them already at the design stage, as well as mistakes made during construction (especially the inexperience or habits of individual construction teams) may contribute to this, that the constructed building will at most meet the standards of an insulated building or, in a more favorable variant, energy-saving, but will not meet the standards of a passive or low-energy house.
Illustrating this with a simple example, it is not enough to insulate the building and install a recuperator or a heat pump to have a passive house. And these are not the only available technical solutions (recuperator, heat pump), which make it possible to meet the parameters and features of a passive house in our planned investment.
The tables below show the differences in energy demand and energy classifications of buildings.
Division into energy-saving buildings
| Energy consumption (kWh / 1m2 / year) |
|
| The house is not insulated | >140 |
| Traditional house | =110 |
| Energy efficient house | <70 |
| passive house | <15 |
Energy Classification of Buildings
| Energy consumption (kWh / 1m2 / year) |
|
| Very energy intensive | >250 |
| Energy-intensive | 150-250 |
| Medium energy intensive | 100-150 |
| Medium energy efficient | 80-100 |
| Energy saving | 45-80 |
| Low energy | 20-45 |