Swapped out infinity thermostat for a Honeywell t4. Rewired condenser since it was wired as a communicating, tested for operation after and unit fired up. Adjusted airflow for the air conditioner at the furnace as well. Tested furnace after wiring in thermostat, both furnace and ac operating properly off of new thermostat. Showed customer how to operate thermostat. Let them know to call if they have any questions