This dataset includes the data for two different integrated units installed in typical Italian neighbourhood supermarkets are considered. The two supermarkets are respectively located in the north-east area of Italy (Trento, Figure 1a), characterized by a relatively mild climate during summer and an harsh winter, and in the central area of Italy (Rome, Figure 1b) which is characterized by warmer winter and hot summer instead. This difference in the type of climates where the installations are located, gives the opportunity to analyse and compare the performance of the MultiPACK CO2 integrated units at different external environment conditions. According to EN ISO 13926-6:2008, the Heating Degree Days of Rome and Trento are equal to 1415 and 3001 days respectively. As for the external ambient conditions (dry bulb temperature and relative humidity), they are taken from an official meteo station close to the supermarkets (http://storico.meteotrentino.it for Trento and http://meteoeplus.pd.cnr.it/stations/summary-rm01e.php for Rome)