Patent ID: 8757506

Claim:
A method of operating a refrigerant system to control an air temperature associated with a comfort zone by providing the comfort zone with air that may include some outside air, wherein the refrigerant system includes a compressor; a fan selectively operable at a faster speed and a slower speed to move the air at different flow rates; and a fresh air damper selectively movable to an open position for introducing the outside air into the comfort zone and a substantially closed position for substantially inhibiting the outside air from entering the comfort zone, the method comprising: establishing a setpoint temperature; cyclically operating the refrigerant system above and below the setpoint temperature; running the compressor, positioning the fresh air damper to its open position, and running the fan at the higher speed for a first period when the refrigerant system is operating above the setpoint temperature; and running the compressor, positioning the fresh air damper to its substantially closed position, and running the fan at the lower speed for a second period when the refrigerant system is operating below the setpoint temperature.