Arrived to check on a system recently installed by TE. Client said heat stopped yesterday and dropped down to 55 inside. Upon arrival today the thermostat was satisfied at 72 without any faults or failures. I tested all operations of the system and found no concerning signs. Due to the way the drain line was ran it’s possible that when temperatures dropped the drain line froze. It was draining and we cleaned it today and found no obstructions at all. Both units have free drainage. Filters were clean, all mechanical components were within manufactured specifications. We signed up for Homecare to get warranties fully intact. System fully operational up and downstairs without failures. Call complete.