Harper's Heating and Cooling was looking to profit from both us and the home warranty company. His diagnosis was a failed compressor, and he suggested a complete system replacement. I became suspicious when he didn't return my calls. I asked another company to check the problem, and they fixed it in less than an hour with a $50 spare part. Harper had left the breaker off, so the system would never have started. We would have been $1,600 out of pocket and 10 days without A/C. AVOID AT ALL COSTS!