Our new Rheem HVAC unit quit as the temps dropped into the low 30°s. JC Air sent a troubleshooter to our home shortly after my call. Fabian diagnosed the problem. A part was defective from the factory. A technician, Jorge, came a few hours later with a replacement. Installed it and reconnected the wifi, waited as it went through a complete cycle to be sure all was well. I felt they were both respectful, able and really cared.