Description
The Lennox 21Z09 Enthalpy Sensor Kit is an accessory that is used with the Lennox HVAC systems especially those that come with economizers. It measures the total heat content of air that is the temperature and humidity by having two temperature sensors. All of this information is vital for improving the performance and productivity of the system. By knowing the total heat content of outside air, the HVAC system can decide whether to use the outside air for cooling or mechanically cooled air. Consequently, this sensor kit guarantees enhanced comfort and energy efficiency to the homeowners of the Lennox HVAC systems with economizers.









