Quality Refrigeration Services replaced one of my HVAC units recently. They actually put the unit in twenty years ago and serviced it throughout that time as well. I was very pleased with my previous unit and the quality of the unit they recommended is strong. It seems to be a high quality unit. They're just reliable, efficient, thorough, very customer service oriented, very friendly, honest, trustworthy. Everything you would want with someone being in your home doing work.