Because in our articles often we use by professional names, we present below their explanation.

Low energy house

The building, which use through design and technical solutions can be operated with less than a conventional construction, energy - especially heat - for heating and domestic hot water. The energy-efficient homes energy demand for heating (EuCO) is ≤ 40kWh / (m2year) - Buildings in standard NF40.

Dom dla Każdego

The building should be well insulated external walls and windows with low heat transfer coefficient . Particular attention is paid to the places where, due to disruption of thermal insulation can create a so-called . thermal bridges . Rooms in the building should be positioned so as to be able to use solar energy for their heating purposes and lighting . Investors who want to obtain the lowest possible level of energy consumption during the operation of a house or apartment use a variety of innovative technological solutions - heat recovery units , solar collectors or heat pumps, which allow them to consume about 70 percent . less energy than homes built in the traditional technology .

The required thermal insulation of external walls , the type of ventilation system , air tightness for standard detached houses NF40 in check : Residential energy efficient. Good Practice Guide .

passive house

Standard climb buildings , which are distinguished by a very good performance insulation of external walls and the use of a range of solutions designed to minimize power consumption during operation. The demand for energy in such facilities is less than traditional buildings constructed according to the applicable standards and energy-efficient buildings . For passive house energy demand for heating ( EuCO ) is 15kWh / ( m2year ) - standard NF15 .

In homes passive reduction of the heat demand is so high that it does not apply to traditional heating system , and the only additional heating ventilation air . To balance the demand for heat uses solar radiation and recuperation . All external partitions have a low heat transfer coefficient . Wooden window has a lower thermal losses .

The required thermal insulation of external walls , the type of ventilation system , air tightness for standard detached houses NF15 in check : Residential energy efficient. Good Practice Guide .

Subsidies for the construction of energy-efficient homes

The National Fund for Environmental Protection and Water Management ( National Fund ) in early 2013 started a program to support the construction meets certain standards of energy efficiency. The aid consists of a non-repayable funding of the credit to individuals for the construction of energy efficient / passive house and buy a house or apartment from the developer .

Subsidies for single-family homes will cover two categories of energy :

passive house for energy demand for heating ( EuCO ) of 15kWh / ( m2year ) - You grant is expected to be 50 thousand . zł gross
 energy-efficient homes , for which EuCO will be ≤ 40kWh / ( m2year ) - with a surcharge of 30 thousand . zł gross .
subsidies for housing - 16 and 11 thousand . zł .
Obtaining standard NF40 ( for energy-efficient home ) or NF15 ( passive house ) forcing investors to introduce comprehensive changes to the requirements for thermal insulation of external walls , the type of ventilation and air tightness home :


Directive of the European Parliament and of the Council 2010/31 EU

The aim of the Directive is to promote the improvement of energy efficiency of buildings in the European Community , taking into account external and internal conditions of the buildings and the profitability of projects . The Directive will enter into force in 2020 - building houses " nearly zero energy " then becomes the duty of all investors in Poland.

The National Fund for Environmental Protection and Water Management offered subsidies prepare investors, designers , contractors and manufacturers of building materials , to the stringent requirements of the EU Directive.


Field of science and technology dealing with the processing of sunlight into electricity , which is the generation of electricity from sunlight using photovoltaic phenomena . The main raw material for the production of photovoltaic cells is silicon crystal .

Thermal insulation of the building

( also : thermal insulation , thermal insulation ) - a way to protect the building against unfavorable exchange heat with its surroundings. The external walls , roof and floor of each building can cause loss of heat from the premises . To avoid excessive heating costs should be used with thermal insulation - layer, which prevents unwanted heat exchanges . It is made of materials with low thermal conductivity . As the insulating materials can be used polystyrene, mineral wool , polystyrene , foil thermal insulation , polyurethane PIR or slabs of wood and magnesite .

The heat transfer coefficient in the least favorable location of the outer wall in the home energy saving should be around 0.07 W/m2K. Particular care should be made thermal insulation of the roof , windows, exterior , exterior walls and foundation walls - these places takes the biggest loss of heat from the premises .


Apparatus for converting solar radiation into heat. Solar energy reaching the collector is converted into thermal energy of the heat carrier , which may be liquid ( e.g., water) or gas ( e.g., air) .

Solar panels are most commonly used to :

water heating ,
auxiliary heating ,
cooling buildings .
The operating costs of the building

Operating costs for . GUS naturally associated with states of existence ( maintenance) property, and so are associated with the use of the object ( of a dwelling or utility ) . These are the expenses for heating, electricity , water, gas , utilities .

thermal bridge

( also : thermal bridge ) - a negative phenomenon in construction relying on the existence of a compartment heat the building , which generate large heat losses . The bridges and areas in the vicinity of a lower temperature is observed inner surface. Their occurrence is related to the structural details of the building such as wreaths , lintels , ceilings and balconies . Thermal bridges also meets on a combination of walls and around the embedded faulty windows and doors. Result from the adoption of construction technology or careless execution.

Home energy efficient / passive should have a compact body , educated in a way that eliminates thermal bridges .

The National Fund for Environmental Protection and Water Management

(abbreviated NFOŚIGW ) the basis of his action is the Law on Environmental Protection , and the most important task in recent years - the effective and efficient use of EU funds earmarked for the expansion and modernization of environmental infrastructure in Poland. The implementation of environmental projects that have received or will receive financial support from the European Commission and the financing of these projects from the National Fund will be used by Poland reaching ecological effects arising from international obligations.

The program subsidies to loans for the construction of energy-efficient homes is part of the priority program of the National Fund for Environmental Protection and Water Management under the title " Efficient energy use " .

Neopor ®

BASF product used to produce self-supporting monolithic blocks used in construction technology " Houses for Everyone " .

Neopor ® is a successor of EPS ( expanded polystyrene so . Styrofoam ®). The material is characterized by high structural strength and very low thermal conductivity , so that it develops the body of the building , in a way that eliminates thermal bridges , provides an easy and inexpensive way to achieve passive house standards . The technology does not require deep endowment , which translates into significant savings in time and cost , and allows the use of the plot , which, due to the low carrying capacity of land are classified as niebudowlane .

Another advantage is the short turnaround time - a hundred-meter house is formed during 4-6 weeks. All the components of buildings with Neopor ® - u are delivered to the site in the form of prefabricated elements , which are in place are teamed with simple technical operations . Small specific gravity of the material makes it easy to transport , unloading and combining individual elements of the system construction .

Renewable energy sources

Energy source whose use is not associated with long-term deficit - the resource is renewed . These include solar, wind, biomass , biogas , wave, tidal . The opposite of them are non-renewable energy sources , or sources , the use of which is progressing faster than their natural reproduction .

The heat pump

Thermal machine which forces the flow of heat from an area with a lower temperature region to the higher temperature . Allows space and water heating using exhaust heat from the environment - the land, water or air . Thanks to the heat pump , economically we create heat. The device is suitable for both new build and retrofit , because they can be freely combined with existing heating systems .

Heat pump output is selected based on the design thermal load of the building. The demand for heat for your home depends on many factors: the surface of the building, the construction of walls , number and placement of window and door openings , etc.

CO2 emissions

The amount of secreted into the atmosphere of carbon dioxide from natural sources, a 20-fold higher than that associated with the activity of the people. In the scientific community there is still no consensus on the size of the human impact on climate change by greenhouse gas emissions.

Houses with low energy consumption can significantly reduce CO2 emissions into the atmosphere. In addition, energy-saving house with Neopor ® -u does not cause danger to air, soil and water ( during production and during operation ) .


( also : a prefabricated element ) - an intermediate element made outside the place of its incorporation , used mostly without changing its dimensions and shapes. Typical building element used for mounting on the site such as Styrofoam blocks .

The advantages of precast :

production rate ,
speed of installation ,
repeatability and precision components
independence of the implementation object of the weather conditions .
heat Recovery

The installation allows heat recovery from exhaust air outside the building and the continuous exchange of air - this reduces power consumption and provides daily temperature stabilization design. The simplest solution used in ventilation systems is a recuperator (including plate heat exchanger ) . Recovery brings a lot of advantages : mechanical ventilation system with heat recovery air cooperating with the heat pump type air - water provides not only economic heating in winter , but also comfortable space cooling in summer . It also provides an excellent microclimate interior regardless of the weather conditions - with air filtration frees residents from all allergens.

energy certificate

( also : energy performance certificate of a building energy certificate ) - determines the annual demand for non-renewable primary energy EP and final energy EK . The calculations are given in kWh / (m² year) . The certificate is valid for 10 years. You need to be presented when applying for a subsidy on the loan under the National Fund .

This term was introduced along with the work on the implementation of the Directive of the European Parliament and of the Council of Europe concerning the energy performance of buildings.

indicator EP

Annual computational demand for non-renewable primary energy for heating, ventilation and hot water and cooling [ kWh / ( m2year )] .

Ventilation supply and exhaust

Type of mechanical ventilation , which in homes with lower energy consumption replaces the gravitational ventilation . The system significantly reduces the reduce energy demand needed to heat the incoming fresh air . The system consists of the two fans - the supply and exhaust . Outside air enters into the main air duct and smaller cables distributes air to each room . Exhaust air collecting passage is disposed , which is located outside the building.

The heat transfer coefficient

(U) - for calculating the loss ratio of heat transmitted through building partitions (walls , ceilings , including windows, doors ) and the comparison of thermal properties of building partitions . Size ratio is [W / m² / K] . The lower the value of this coefficient, the less heat loss , and so - the better the thermal insulation of partitions . The heat transfer coefficient in the least favorable location of the outer wall in the home energy saving should be around 0.07 W/m2K.