Activated carbon is a porous material with extremely high adsorption capacity, so it plays an important role in improving the coefficient of performance of air conditioners. By adding activated carbon to the air conditioning system, it can effectively remove odors, harmful substances, and bacteria from the air, thereby improving air quality and helping to improve the energy efficiency ratio of air conditioning. 
First of all, the adsorption effect of activated carbon can effectively remove odors from the air. In air conditioning systems, odors are caused by organic matter and microorganisms in the air, which can accumulate in the system after a period of operation, causing odor problems. By adding activated carbon to the system, these odorous substances can be adsorbed and removed, keeping the air fresh. Secondly, activated carbon can also remove harmful substances from the air. In the air conditioning system, some harmful substances such as formaldehyde and benzene may be released, causing harm to human health. By adding activated carbon, these harmful substances can be adsorbed and removed, thereby protecting human health. 
In addition, activated charcoal also removes bacteria from the air. In an air-conditioning system, microorganisms such as bacteria and viruses may grow in the system and pose a threat to human health. By adding activated carbon, these microorganisms can be adsorbed and removed, reducing the risk of disease transmission. 
In conclusion, activated carbon plays an important role in improving the coefficient of performance of air conditioners. By adding activated carbon, it can effectively remove odors, harmful substances, and bacteria from the air, thereby improving air quality and helping to improve the energy efficiency ratio of air conditioners. Therefore, when choosing an air conditioner, you can consider choosing an air conditioning system that contains activated carbon to get better air quality and energy efficiency ratio.