Heating and Cooling Primary Energy Demand and CO2 Emissions: Lithuanian A+ Buildings and/in Different European Locations

National legal and political regulation in the field of energy efficiency is closely connected to minimizing consumption buildings. Within framework implementing Directive 2018/844/EU on performance buildings Europe, practice its application differs from country country. This study aims reveal differences indicators an energy-efficient building European states. To that end, analysis was made compare results a single-family home model 11 city locations with different climatic conditions (from Mediterranean Nordic) appropriate national regulations place for past three years. The simulation done using IDA Indoor Climate Energy software, EQUA Simulation AB, Stockholm, Sweden. demand primary based factors. A comparison overall heat transfer coefficients walls windows applicable regulations. showcase depending heating cooling purposes, as appropriate, CO2 emissions. has shown increase significantly—by 65% case Vilnius, whereas only slight decrease heating. Furthermore, Lithuanian class A+ singled out individual case, determined location under analysis.