Today I arrived and met with Mr and Mrs Blain. I completed fall HVAC evaluation of 3 units. Upstairs has furnace, downstairs gas furnace and garage/workshop ductless heat pump. I evaluated performance of all 3 units finding them to perform quite well. I evaluated safety of the systems and found all proper, I cleaned the gas flame safety systems at this time. I verified no C.O is found within home during gas operation. I cleaned the ductless system filters at this time. Systems are all winter ready and performing well, upon departure left all 3 units operating in cooling mode. Customer had downstairs thermostat connected to WiFi but not communicating with infinity server. Customer will call the carrier app support line and if they cannot correct it they will call for help.