Air Conditioners (Room Air Conditioners)

Why should I choose an ENERGY STAR certified room air conditioner?
Is a Room AC required to have connected functionality to certify as ENERGY STAR?
Should I turn off my room air conditioner when I'm not home?
For products with optional connected criteria, is it acceptable for an external communication module to be provided to the consumer after the sale?
How do I choose the right size Room AC?
Are there ENERGY STAR certified ductless split-system air conditioners (mini splits)?
Are there ENERGY STAR certified portable room air conditioners?