Commercial machines, while concerned with energy consumption, are also intended to process a lot of laundry very quickly. So they generally hold generous amounts of laundry, and are built especially to handle this sort of volume on a very regular (i.e. several times a day) basis - and then some. 

Your standard residential machine, on the other hand, is designed for maybe a load or two a day and built the cheapest possible to last within a certain timeframe. 

The former is of course designed for high levels of operational reliability, so it can be repaired relatively easily and inexpensively. The machine, being built very heavily to handle high levels of abuse frequently has a far greater cost than the "throwaway" machines in our home laundries. 

Commercial machines may feature various devices designed to eliminate user error in dosing the correct chemicals, of which there are many for machines used in commercial laundry, and temperatures are rarely lower than the "hot" range if I understand correctly. 

Compare this to manual dosage and temperature selection in (most) residential machines. 

This is but the tip of the iceberg. The cycles the machines follow and how they are installed are also radically different, and designed to meet radically different needs between the two types. I'm sure there are other things that other members can inform you, but this is what I know and can 'vaguely' describe right at this moment. 

Is there anything *specific* you wanted to know about the machine's differences?