preventing fluid or gas bypass

Fabricated to strict OEM tolerances

Warning (Prop 65):

Service Efficiency: The take-apart filter drier design streamlines maintenance

Lennox 63K10 Defrost Switch 322057-301 preventing fluid or gas bypassWhen you're servicing Lennox heat pumps, a failed Lennox 63K10 Defrost Switch is often the culprit behind iced over coils and compromised efficiency. This OEM Lennox replacement part is engineered for high accuracy temperature monitoring on the outdoor coil, ensuring the defrost cycle initiates exactly when needed to prevent frost accumulation. Built for commercial and industrial grade durability, this HVAC defrost control manages the thermal switch