System and Method for Concentrating Gas

A modular gas concentrating system comprising:

• a first module comprising a housing having:
• a system controller, a user interface, and one or more first module power and data ports;
• a second module comprising a housing having:
• a first compressor, a first concentrated gas output capacity, and one or more second module power and data ports;
• a third module comprising a housing having:
• a second compressor, a second concentrated gas output capacity, and one or more third module power and data ports;
• and
• wherein the first module is connectable to the second module via connection of the one or more first module power and data ports with the second module power and data ports and wherein the first module controls the second module to provide the first concentrated gas output capacity;
• and
• wherein the first module is connectable to the third module via connection of the one or more first module power and data ports with the third module power and data ports and wherein the first module controls the third module to provide the second concentrated gas output capacity.