Lennox 99K64 Discharge/Return Air Temperature Sensor

The Lennox 99K64 is a duct temperature sensor that is applied to HVAC systems. It is a small rod shaped device normally measuring 1/4 inch by 12 inches which measures the temperature of the air that enters and leaves the heating or cooling unit. The sensor relays this information to the HVAC control board to allow the control of system operations and to ensure a steady comfort level is provided. Advantages of this kind of sensor include increased productivity, enhanced temperatures and durability of equipment since it is not overstressed to achieve the set temperatures.