I am a skilled professional that works for a Alaskan Air Conditioning & Heating - Phoenix company. I received a call from a customer who reported that their air conditioner was not cooling. I arrived at the customer's home and performed a thorough inspection of the unit. I found that the compressor was not working properly and needed to be replaced. I replaced the compressor and tested the unit to ensure it was cooling properly. The customer was very pleased with the service and thanked me for my help.