The Importance of Clean A/C Coils It is estimated that dirty evaporator and condenser coils can increase the energy usage of your air conditioning system by over 30 percent. Additionally, reduced heat transfer efficiency can cause other problems, such as poor cooling performance, frozen evaporator coils, and compressor overheating. Call now our service areas include the following, Pinehurst, Southern Pines, Aberdeen, Pinebluff, Ft. Bragg, Raeford, Laurinburg, Vass, Seven Lakes, West End, Rockingham, Cameron, Biscoe, Fayetteville, Sanford, Raleigh, NC and all the surrounding areas.