Lennox 69W56 2 Stage Pressure Switch

The Lennox 69W56 is a Pressure Switch, an essential control device intended for two-stage heating and cooling systems. Unlike single-stage systems that work at full capacity, two-stage systems have the flexibility of varying their capacity to meet the demand. That is a process that needs to be optimized. It checks pressure inside the system. It has two set points, normally a high and a low. According to the pressure reading, the switch turns on the high or low stage of the system and provides the necessary airflow to heat or cool the home. This can enhance comfort and might, decrease energy usage. It can enhance comfort and probably lower energy usage.