the highest Energy Efficiency Ratio (EER) achieved by residential air conditioners was around 26. However, please note that technology and efficiency standards continue to advance, and new products may have been introduced since then. It's possible that even higher EER ratings have been achieved or will be achieved in the future.
The EER is a measure of an air conditioner's cooling efficiency, calculated by dividing the cooling capacity (in British Thermal Units or BTUs) by the power consumption (in watts) at a specific outdoor temperature. A higher EER indicates a more energy-efficient air conditioner, meaning it can provide more cooling while using less electricity.
When purchasing an air conditioner, it's essential to check the EER rating as it directly impacts energy consumption and operating costs. Look for models with higher EER values to ensure better energy efficiency and reduced environmental impact. Always refer to the latest product specifications and energy labels to find the most up-to-date information on air conditioner efficiency ratings.