AC not working properly? The culprit may be the evaporator coil. For expert Kansas City evaporator coil services trust KB Complete. Call (913) 722­-6835 now. Find out how you can save instantly by clicking here for online deals and coupons. One of the most vital components in your air conditioning system is the one that is very common to break. At KB Complete we work to ensure all the components of your air conditioner are working properly. Our goal is to make all homes in Kansas City, KS-MO comfortable and efficient through the warmer months. Click here to see what others are saying about us. The evaporator coil is the component in your AC system that cools the hot air running through it. Refrigerant pumps through the coil, cooling it. As the coil cools down and air passes through it, water in the air will condense and drip into a drip tray below the coil. From there, the air gets pumped into your home, cooled and removed of humidity. Due to the amount of work an evaporator coil must do to cool your home, it will definitely be one of the parts on your AC that will wear out the fastest.