Kleen-Screen™ Air Conditioner Coil Filter -- improve energy efficiency; protect A/C unit from 95% of most debris that can clog your air conditioner condensor. Easy one-person installation. Dust to clean. About $30.00.
While these steps will help to keep your AC system in top shape, be aware that there are maintenance items that only a trained HVAC technician will be able to do... The bottom line? While some AC maintenance can be done by a savvy homeowner, it’s still necessary to have an expert technician check the system periodically.