As a service technician I am often asked why a preventative maintenance is important for a home air conditioning system. My response is that it is part of your home that needs to be taken care of just like any other appliance or car that you own. For instance you typically do not operate your car without changing the oil every three thousand miles. You have to change the oil and perform maintenance on your vehicle to keep it running in order to make it last. Notice when you keep your oil changed, rotate the tires, clean it and perform regular maintenance the vehicle lasts and operates efficiently. Keeping up with your home air conditioning system will operate the same way. Performing regular preventative maintenance on the system will keep it operating at its top performance.