offering consistent performance in temperature ranges from -4°F to 131°F

Engineered as the direct T605DFH-4 replacement

this switch ensures that your HVAC system remains protected without requiring a manual reset for minor ambient temperature fluctuations once the rollout condition is cleared

ensuring the manifold pressure precisely matches the heating demand

Lennox 73K17 Limit Switch 322838-754 offering consistent performance in temperatureAs an HVAC technician, you know that a failed limit switch is a primary cause for furnace short cycling and overheating. The Lennox 73K17 is a genuine OEM limit switch designed specifically for Lennox, Allied, Armstrong, and Ducane heating units. This SPST normally closed high limit control features a 7 inch insertion length, making it compatible with various air handlers and furnaces, such as the G23Q5 6 series. It operates as an auto reset limit