1. Directive 2002/91/EC of the European Parliament and of the Council of 16 December 2002 on the Energy Performance of Buildings, Official Journal of the European Communities, L1/65-L1/71, Brussels, 4.1.2003.
2. Council Directive 92/75/EEC of 22 September 1992 on the Indication by Labelling and Standard Product Information of the Consumption of Energy and Other Resources by Household Appliances, Brussels, 2002.
3. EN 15316-1, Heating Systems in Buildings – Methods for the Calculation of System Energy Requirements and System Efficiencies – Part 1 General, CEN, Brussels, 2007.
4. EN 255-3 Air Conditioners, Liquid Chilling Packages and Heat Pumps With Electrically Driven Compressors Heating Mode Part 3: Testing and Requirements for Making Sanitary Hot Water Units, CEN, Brussels, 1997.
5. EN 14511-2 Air Conditioners, Liquid Chilling Packages and Heat Pumps with Electrically Driven Compressors for Space Heating and Cooling. Part 2: Test Conditions, CEN, Brussels, 2004.