A 23 SEER AC unit is a type of air conditioning system that is designed to provide high efficiency cooling. This type of system is designed to provide a high level of energy efficiency, which translates into lower energy bills and a more comfortable home. The SEER rating is a measure of how efficient an air conditioning system is, and the higher the rating, the more efficient the system is. A 23 SEER AC unit is considered to be a very efficient system, as it can provide up to 23 times the cooling power of a standard AC unit. This type of system is also more expensive than a standard AC unit, but the cost savings in energy bills can more than make up for the additional cost. In addition to providing energy savings, a 23 SEER AC unit can also help to reduce noise levels in the home, as it is designed to operate quietly.