Matt repaired our Sub-Zero 427R refrigerator. While the repair was quite intensive, Matt's attention to detail and communication with us throughout the process was outstanding. Matt even helped us re-level the unit after it was placed back in the cabinet. It's rare when you can find good, honest customer service at a reasonable price. I would definitely contact Matt again in the event I need an appliance or my HVAC fixed. I would recommend Matt and Chicago Heating and Cooling 1 Corp. to anyone. Thank you again Matt! Doug M.