Does your AC unit seem to be producing a lot of moisture? Although some condensation or moisture around the unit is normal, excessive moisture can indicate a problem. The good news is that most issues that lead to a wet AC unit can be repaired quickly and cost-effectively if you address them early.
1. Low Refrigerant
Low refrigerant levels impact the proper exchange of heat inside the unit, which can lead to condensation buildup on the evaporator coils and refrigerant lines. In some cases, the condensation freezes, which can lead to a large amount of water when it does thaw out. An AC tech can check your AC for refrigerant leaks. If a leak is found, it will have to be repaired, and new refrigerant will be added so that the AC functions properly again.
2. Dirty Coils
Dust, pollen, and dirt buildup on the coils can over-insulate them, which also leads to condensation buildup and the possibility of freezing. Fortunately, this is something you may be able to address yourself. You can spray the coils down with a foaming coil cleaner. Rinse it off after about 15 minutes or as directed on the package. The cleanser will remove the dirt buildup so that over-condensation doesn't occur.
3. Blocked Condensate System
Although too much condensation can indicate a problem, some condensation in the AC unit is expected, so there is a drainage system in place. When this system is working properly, condensation runs off the unit and into a condensate tray, which then drains out a condensate line. If debris or algae growth blocks these lines or drains, then the moisture can collect and overflow the drain pan. Your AC tech can clean out the drains and lines to save the problem.
4. Dirty Filters
Dirty filters slow airflow, which can increase heat buildup inside the unit as it works harder during operation. This heat, in turn, increases condensation buildup. The result is too much water and the appearance of leaking water around the AC. Changing your filters or having the AC unit cleaned improves airflow and solves the problem.
5. Wrong-Sized Unit
An overly small unit for your home's size has to work harder, which can lead to it freezing up. The moisture begins to flow once the unit thaws out. If your unit keeps freezing, an AC technician can determine if its size is the reason for the problem.
Contact an AC system maintenance service for more assistance.