Key Benefits for Technicians: Universal Mounting: Compact design with a heavy-duty steel frame allows for easy installation in various orientations within tight mechanical cabinets

making it suitable for chilled water

Industrial Grading: Engineered to withstand the high-temperature conditions typical of commercial condenser units

The standard running time is 90 seconds for a 90-degree rotation

or equipment damage

Lennox 73K21 Limit Switch 320735-701 Key Benefits for Technicians: UniversalThe Lennox 73K21 Limit Switch is a critical safety component designed for precise thermal regulation within residential gas furnaces and air handlers. Engineered as a Lennox replacement part, this 145 175F AUTO limit switch monitors discharge air temperatures to prevent heat exchanger overheating. It operates on a normally closed circuit that opens if temperatures exceed the 175F threshold, effectively cutting power to the gas valve or ignition