- Common signs include unusual noises, inconsistent cooling, higher-than-normal energy bills, frequent cycling, and water leaks around the unit. 4. **How can I improve the energy efficiency of my existing air conditioning system?

- Common signs include unusual noises, inconsistent cooling, higher-than-normal energy bills, frequent cycling, and water leaks around the unit. 4. **How can I improve the energy efficiency of my existing air conditioning system?
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