How is the SEER rating used to measure an air conditioning system?

The Seasonal Energy Efficiency Ratio (SEER) rating is specifically designed to measure the energy efficiency of air conditioning systems over a typical cooling season. This ratio is calculated by taking the total cooling output (in BTUs) delivered by the air conditioning system during a specific season and dividing it by the total energy consumed (in watt-hours) during that same period. A higher SEER rating signifies a more efficient unit, meaning it uses less energy to provide the same cooling output compared to units with lower ratings. This metric is crucial for consumers looking to reduce energy costs and minimize their environmental impact, as it directly relates to the system's overall performance and energy consumption efficiency throughout its operating life. Understanding SEER can help homeowners make informed decisions when selecting air conditioning systems.