Over the top service by Mark Nelson the service supervisor who worked on my AC unit today. He was very knowledgeable, up front with me on everything, and I felt like he pointed me in the right direction in the purchase of a new system. He got us back up and running until the new unit can be installed next week. I feel like the price was very reasonable and I can't wait for a much overdue upgrade. Thanks Mark and A+ Derr.Heating and Cooling!
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