Ducts can be sealed and insulated and thus improve your AC systems efficiency. Use the correct refrigerant charge. This can greatly affect your air conditioner s efficiency. By the same token, the refrigerant should never be overcharged because it can cause the refrigerant and oil to flood and damage the AC unit. Only a professional service person should check and recharge your air conditioner s refrigerant.
Refrigerants never wear out and refrigerant coils are completely sealed, closed systems.
Therefore, if your refrigerant coils were properly charged during installation, but later need to be recharged, you have a leak in the system. Failure to repair the leak has two consequences. First, it allows refrigerants to leak into the atmosphere, and damage the ozone layer. Second, moisture can enter the AC system and combine with the chlorine and fluorine in the refrigerant to form acids which, over time, will damage the AC s compressor and coils. Clean the indoor and outdoor coils of your central AC system.