Was having a new roof installed on my house . While they were working around my ac unit to remove shingles. Unknown to me there were some exposed wires that caused a short and stopped my ac from working. Guess who ever installed the unit before I bought the house did a half ass job. Called many places just too be told they couldn't come for 2 days. Even though very busy they got too my house in under 4 hours. He repaired the wires replaced a blown fuse and only charge for the diagnostic fee. $55.00 .