- Signs include reduced cooling efficiency, unusual noises or odors, frequent cycling on and off, and increased energy bills. 5. **What steps can be taken to improve the energy efficiency and longevity of an air conditioning system?

- Signs include reduced cooling efficiency, unusual noises or odors, frequent cycling on and off, and increased energy bills. 5. **What steps can be taken to improve the energy efficiency and longevity of an air conditioning system?
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