Lennox 69M38 Limit Switch 321894-709 The 145TZ is a specific

The 145TZ is a specific variation of the 145T frame

verifying the continuity of this temperature-actuated switch is a standard diagnostic step

By utilizing this genuine Carrier HVAC part

The electronics are environmentally sealed to withstand the condensation and icing common in suction line applications

when used with a vent limiter

Lennox 69M38 Limit Switch 321894-709 The 145TZ is a specificThe Lennox 69M38 Limit Switch is a critical safety component designed for precise thermal regulation within residential and commercial furnace repair and air handler applications. This OEM Lennox replacement part serves as the direct replacement for 69M3801, ensuring seamless mechanical and electrical compatibility with existing mounting footprints. As a high reliability HVAC limit switch, it operates on a standard 24V circuit to monitor internal