Your air conditioning system works the hardest during the summer months. It is constantly turning on and off to meet the cooling demands of your home. It is vital to your system that a tune up be performed at least once a year. Preferably this maintenance is preventive and will alert you of any possible problems that could occur such as issues with condensation or failing components.
Always make sure that you have a reputable air conditioning company service your equipment. Don't fall for the low price scams that often lead to costly repairs. A reputable air conditioning company should have the ability to go over the services that will be performed and answer any relevant questions. Also their technician should be knowledgeable and trained.
Keep in mind that 50% of your energy bill goes to cooling and heating your home. Regular maintenance can save you on a monthly and yearly basis. Don't cut short the life of your equipment by not having a technician perform a through maintenance.