Since this year 2 compressors are used in half-industrial air conditioners?

Since this year 2 compressors are used in half-industrial air conditioners? Why 2 is used instead of 1?

Answer: Among all models of commercial series this year only LV-H368KLA(B)0 have 2 rotary compressors. The availability of two compressors in one refrigerated cube helps to optimize the productivity of the system both in power consumption and noise level.