Your air conditioner is an energy control – the biggest single cost in most home utility bills. Put the hog on a diet and cut your electric bills with central air equipment that operates at peak efficiency. Whether the cooling is working or not, service can mean anything from preventive maintenance, fine tuning to diagnostic services and repairs. Preventive maintenance includes everything from examining the condition of the equipment to cleaning of some parts, leveling of components, lubricating moving parts and fine tuning or adjusting the setting of motor speeds or refrigerant charges. Diagnostic and repair service encompass a wide range of services that might not entail anything from locating the reason that your equipment does not operate or does not operate properly. Air flow includes the proper operation of fans or blowers as well as design and function of the air distribution system.  Air cleaning and purifying include filters, electrostatic and electric air cleaners.