In general, they are the machines that present the highest consumption in meat packing plants, supermarkets, shopping malls, among others that use cold rooms. The reduction in the energy consumption may reach 30% with WEG energy efficiency solution, which consists of a high-efficiency set: W22 IR3 Premium motor driven by the CFW11 variable speed drive. Other gains include temperature uniformity in the cold room, greater thermal comfort (in case of air conditioning systems) and reduced mechanical wear.