Home>Offer>Energy consulting>Analysis of the possibility of adaptation of the project of building a single family house or multi-family building to NF15 and NF40 standards

Analysis of the possibility of adaptation of the project of building a single family house or multi-family building to NF15 and NF40 standards

The National Fund for Environmental Protection and Water Management launches a new priority program in 2013. "Loans for construction of energy-efficient homes" addressed to natural persons. PLN 300 million was reserved for the payment of subsidies from PLN 11,000 to PLN 50,000. for loan agreements concluded in the years 2013-2018.  For 2013-2015, the amount of PLN 100 million will be allocated to the distribution.

Awarding a grant is conditional on the issuing of the appropriate certificate for the erected building by the appointed experts. However, the role of designers and investors is to meet the requirements specified in the guidelines of NFOŚiGW.

Obtaining the NF40 or NF15 standard (demand for utility energy for heating and ventilation EUco ≤ 40 kWh/m2year or EUco ≤ 15 kWh/m2year) will require a comprehensive change in the requirements for thermal insulation of the external partitions, the type of ventilation system and air tightness. These changes include:

Reduction of the heat demand needed to heat the supply of air Replacement of gravity ventilation with supply and exhaust ventilation with heat recovery from extract air, characterized by low consumption of electricity
Reduction of heat losses due to external air infiltration Limitation of uncontrolled external air infiltration, increasing the air tightness requirements of the building
Reducing heat loss through windows and doors Increasing the requirements for thermal insulation of windows, balcony doors and exterior doors
Reduction of heat losses through non-transparent partitions Increasing the requirements for thermal insulation of walls, roofs, ceilings and floors on the ground
Reduction of heat losses through non-transparent partitions Introduce requirements for maximum linear values of the heat transfer coefficient

In addition to the above-mentioned requirements, additional recommendations can be made to help meet the standards and achieve the desired environmental performance. These requirements have no direct impact on the utility demand for building heating and ventilation (apart from the architectural requirements), but can contribute to reducing the cost of building use, reducing greenhouse gas emissions and increasing the comfort offered.

Offer of the National Agency for Energy Conservation S.A. consists in carrying out a preliminary analysis of the architectural concept or construction project to meet the requirements of NFOŚiGW for the NF40 or NF 15 standard. The analysis is presented in the form of a written paper with the following contents:

1. Base of elaboration
2. Energy analysis of a building based on an existing concept or project
3. Identification of possible improvements and their impact on the energy balance of the building
3.1. Reduction of heat loss by penetration
3.1.1. Increased insulation of external walls
3.1.2. Increasing roof insulation
3.1.3. Increase the insulation of the ceiling over the garage
3.1.4. Increase the insulation of the internal walls between the living and service areas and the staircases
3.1.5. Increase the insulation of glazed partitions
3.1.6. Limit the occurrence of thermal bridges
3.2. Reduced heat loss for ventilation, increased air tightness of the building
3.3. Improving the energy efficiency of the heating system
3.4. Improving the energy efficiency of the hot water supply system using solar collectors (residential part)
3.5. Increasing the energy efficiency of lighting common parts of a building
4. Selection the optimal set of modernization improvements
4.1. Impact of improvements on the energy performance of the building and future operating costs
5. Conclusions

The final result of the utility energy calculation for the NF40 or NF15 standard should correspond to the calculation result of an independent expert issuing a confirmation that the building meets the requirements set by the NFOŚiGW for the allocation of subsidies. Any differences may result from the use of other construction materials or installations during construction than those in the construction project.

The study is prepared by a team of experts from the National Energy Conservation Agency S.A. who has a multi-year statement in the calculation of energy demand for buildings in the framework of energy audit and repair works and energy performance certificates as well as passive house certification in accordance with the Passivhaus Institut of Darmstadt, Germany. The team consists of both full-time building engineers and individuals who have the power to draw up energy performance certificates.

The work is done within 3 weeks from the date of presentation of a complete architectural concept or construction project in all industries.

Cost of implementation of the project of a single family house
The cost of adaptation of a single family house project to the energy saving standard is 1500 PLN + 23% VAT. The price does not include any travel expenses.
The cost of developing detailed solutions is 1500 PLN + 23% VAT. The price does not include any travel expenses.
STAGE III (additional)
The cost of a one-time visit to the site is 400 PLN + 23% VAT. The cost of issuing the certificate is 200 PLN + 23% VAT. The cost of performing an air tightness test is 1000 zł + 23% VAT. The price does not include any travel expenses.
The cost of adapting a multi-family building or utility project
The work schedule and cost are determined individually for the project.
Time limit for completion
Stage I will be completed within 30 days from the date of signing the contract and receive the necessary information about the building in the form of technical documentation of the building. Stage II is completed within 30 days of the end of Phase I. Other works will be performed depending on the pace of the project implementation after being agreed with the client.

Contact for a detailed offer
dr inż. Dorota Kowalska – dkowalska@nape.pl 22 50 54 506, 22 50 54 654


Energy and renovation audits prepared in accordance withthe Act currently in force on the promotion of thermomodernization undertakings in the years 2003 -2012
Energy Performance Certificates as of 1.01.2009
Other studies

Type of elaboration Quantity
Energy audits: 3388
Public utilities: schools, kindergartens, nursing homes, collective homes 469
Multi-family residential buildings: housing cooperatives 723
Multi-family residential buildings: housing communities 1831
Public utilities: health care facilities 79
Public utilities of the municipality 48
Other facilities (industrial, office, service buildings not owned by entities eligible for the thermo-modernization bonus) and heat sources 238
Including using renewable energy sources 42
Including mechanical ventilation (with heat recovery and air conditioning) 36
Audit of repairs 256
Energy Performance Certificates: 593
Public utilities: Castorama (14), Leclerc Gdańsk, Intraco II Warszawa, DBC Warszawa, Ursynów Business Park Warszawa, Metropolitan Warszawa, Focus Warszawa, Centrum ZIELNA, Galerie Handlowe SEGECE: Warszawa, Lublin, Kraków, Poznań, Ruda Śląska, Sosnowiec, Kraków, obiekty budowane przez PORR Polska: Poleczki Biznes Park Warszawa, Galeria Słoneczna Radom, local governments 65
Residential buildings (Orco, housing associations, housing co-operatives) 70
Residential premises 223
Residential buildings with service facilities 11
Residential buildings 76
Service premises 148
Other developments - adaptation of construction projects to the energy-saving standard 76
Detached houses (Lipińscy, Murator Projekt, Archipelago, Z500, Polski Dom 2000, MTM Styl, FORAS, individual clients) 70
Multi-family housing (SM Szaserów, ORCO housing estate in Szczecin, Creative Developer) 3
Public Utilities (Hotel Zakopane, historical hotel and conference building Strzyżew, Hotel in Ostrów) 3
Certification of passive houses 2