what is a seer rating

SEER stands for Seasonal Energy Efficiency Ratio, which is a measure of how energy efficient an air conditioning system is. The SEER rating is calculated by dividing the cooling output of the system during a typical cooling season by the power input. The higher the SEER rating, the more efficient the system is. The SEER rating quantifies overall AC system efficiency on a seasonal basis, and it helps consumers compare energy efficiency when choosing a new air conditioner. In the United States, the efficiency of air conditioners is often rated by the SEER rating, which is defined by the Air Conditioning, Heating, and Refrigeration Institute. The SEER rating reflects overall system efficiency on a seasonal basis, while the EER reflects the systems energy efficiency at one specific operating condition. The SEER rating of an air conditioning unit is the cooling output during a typical cooling season divided by the total electric energy input during the same period. The best SEER rating for a home HVAC system will be different depending on the homeowners individual preferences, such as prioritizing air conditioner efficiency or unit affordability.