Summer is in its waning days, and the air is turning cooler. You might have actually turned off the air conditioner and just let it stay at the ambient temperature in your home. But before you say "see you later" to your central air unit, it needs a little TLC in the fall. Here are some tips to care for your unit so that when warm weather arrives again next year, it'll be in tip-top condition to work efficiently. 1. Clean out the area around the unit. During the year, bushes can start to grow towards your unit, leaves can blow in, or small twigs can get lodged in places, causing its efficiency to be affected. Clear debris from around the unit and keep vegetation at least 2 feet away. 2. Call in the pros. Once a year, have a licensed professional perform a full inspection on your air conditioning units. This will involve cleaning and flushing the condenser coils, draining the pan and drainage system, vacuuming the blower compartments, and checking the refrigerant and mec