[Choose new index for air conditioners-CSPF] If you have friends who want to buy air conditioners, please raise your hands ~ The Energy Bureau has started to use the Air Conditioner Seasonal Energy Factor (CSPF) energy efficiency index since January 2017, which has completely replaced the original energy efficiency ratio EER). Before purchasing an air conditioner, you can evaluate your own cold room space and the CSPF index as a whole, and choose the appropriate air tonnage and function. In simple terms, CSPF adds "different outdoor temperature operating conditions" to more accurately assess the energy efficiency of air conditioners. The higher the CSPF value, the better the air conditioner efficiency and the more power saving.