Passive houses as homes for the 21st century
Passive houses are an example of energy-efficient housing with a positive impact on environmental protection and public interest in them is constantly growing. That is proven by the results of the recently organized trade fair, and also by the increasing trend of passive houses projects with a grant application from the New Green to Savings programme, whose second call is expected in spring 2015. Passive housing has its proponents and opponents.
Proponents of passive houses advocate the slogan “Freedom to breathe – healthy and stable internal environment”, opponents talk about “aquarium” and high investments.
Passive house is one of the options how to fulfil the directive of the European Parliament and the Council 2010/31/EU on the energy performance of buildings, known as EPDB2, which determines three main objectives in combating climate change and which is supposed to be fulfilled until 2020. In 2020, EU citizens will be required to build houses with nearly zero energy consumption (nZEB). The EU directive on Energy Performance of Buildings was transported into Czech law on energy management. Validity of the directive will accrue incrementally according to a building size:
- January 1, 2018 - for buildings over 1500 m2 of energy reference area
- January 1, 2019 - for buildings over 350 m2 of energy reference area
- January 1, 2020 - for all new buildings
- For buildings of public investors the directive always applies two years earlier
Development and realization of energy passive houses were one of the responses to the "Sick building syndrome", whose main cause is a poor indoor environment. Passive houses offer a forced ventilation system that constantly brings in fresh air. The aim for the future is to maintain the basic idea of comfortable living, but gradually keep getting rid of technologies. Heating is supposed to be provided by natural resources only, especially the sun, and to maintain thermal comfort will also be used human heat and heat from appliances..
Passive houses should be simple, fully functional and affordable.
Another important argument to the detriment of passive houses is price. Experts in our country and the world who are engaged in the construction of passive houses, however, argue that the price of energy self-sufficient houses doesn’t exceed price of a regular house by more than 10 percent. And if someone argues with a statistics from developer housing projects, it is simple: “Projects are more expensive because they are generally better” says Jan Rezab, owner of JRD company, member of the EEBCZ platform, who is specialized in passive apartment buildings. More information HERE.