this Single Pole Single Throw (SPST) switch ensures the combustion environment is vented correctly to prevent hazardous flue gas recirculation

Engineered for compatibility with specific Goodman and Amana gas furnaces

The "3CH" designation indicates a Hood #3

75-inch case height ensure compatibility with most existing blower and condenser motor brackets

Properly sized orifices like the 661042R are essential for maintaining the rated BTU output of the burner assembly

Lennox 44L72 Limit Switch this Single Pole Single ThrowThe Lennox 44L72 is a high precision 100 145F Auto Limit Switch engineered for critical temperature regulation in commercial and residential furnaces. As a veteran technician knows, the secondary limit must respond instantly to airflow restrictions or over temperature conditions to prevent heat exchanger damage. This Lennox blower limit switch features an automatic reset, opening the circuit when the temperature exceeds 145 degrees Fahrenheit and