My a/c unit kept blowing the breaker so I called a local unnamed hvac company. They gave me a long explanation about low coolant, old equipment and said new coolant would run about $3,000 but really should replace everything for about $7,000. For a 2nd opinion I asked Family to come out. They were punctual, professional and polite even when he showed me the photo of a loose screw holding down the power cable. The repair took about a minute and cost $95 and all has worked well since.