The definition of an ADT air air conditioning system is one that is designed to provide efficient cooling and heating for a home or office. It is a type of HVAC (heating, ventilation, and air conditioning) system that is designed to provide optimal comfort and energy efficiency. An ADT air air conditioning system is typically composed of an outdoor unit, an indoor unit, and a control system. The outdoor unit is responsible for taking in outside air and cooling or heating it, depending on the season. The indoor unit is responsible for distributing the air throughout the space, while the control system regulates the temperature and humidity levels. ADT air air conditioning systems are known for their efficiency and cost-effectiveness, making them a popular choice for many homeowners and businesses.