SOURCE A central air conditioning system can provide years of satisfactory cooling with relatively little maintenance. However, a seasonal start-up check and periodic maintenance is recommended. Homeowner Checklist The amount of do-it-yourself air conditioning maintenance a homeowner can do is limited. However, there are a few steps that can help the system operate trouble-free and minimize the potential for consequential damage. Ensuring adequate airflow is perhaps the most important homeowner responsibility. Following manufacturer instructions, homeowners can generally: Clean or replace the filter(s) regularly. Keep leaves and other debris off the condensing (outdoor) unit. Keep the condensing coils clean by (very) (0 comments)