I had the system installed the end of October. The first really cold spell in January had the heat not turning on. It was an installation problem. They had reversed the drain lines and the heater stopped working. They got it running. No other problems the first winter. A/C won’t turn on in May when temperatures rise. A wiring problem. Supreme Air is great on coming out and correcting problems. It is too bad that their installers don’t do it right to begin with
