Lennox 78M23 Thermostat 321894-708 and PRS20032K

and PRS20032K

and FJVR valve bodies

technicians transition from older Silicon Carbide (SiC) ignition systems to high-reliability Silicon Nitride (SiNi) technology

Quiet Operation: Integrated sleeve bearings minimize vibration and acoustic output

Open systems with high oxygen or chlorine levels can lead to premature failure of the internal components

Lennox 78M23 Thermostat 321894-708 and PRS20032KThe Lennox 78M23 Discharge Thermostat is a critical safety component designed for precise compressor protection in high performance residential and commercial HVAC units. As a high limit security switch, this Lennox OEM replacement part monitors the discharge line temperature, ensuring that hot refrigerant vapor exiting the compressor does not exceed safe operating thresholds. When the line reaches a critical temperaturetypically associated with high