Proper air conditioner maintenance is essential; it can save you money over the long term and can ensure your AC unit is working as efficiently as possible. Most experts recommend having your unit checked at least once a year, although if it’s an older system or you suspect a problem, more often may be needed. Ideally, the fall is the time to have your heating system checked, while you should have your cooling system serviced in the spring. A thorough maintenance visit will involve checking for any issues or malfunctions, as well as cleaning all the important parts such as the filter and coils to ensure a trouble free performance for the next year. Expect to pay between $100 and $250 for an expert check up and clean of your air conditioning and heating system, although it’s definitely money well spent.