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Ships within 48 hours · Estimated delivery Oct 18 - Oct 23
provided the ambient temperature remains within the specified 32°F to 125°F range
making it ready for R404A and R507 applications
it is compatible with an optional outdoor sensor for real-time ambient temperature monitoring and improved heat pump balance point control
or office applications
Lennox 33H78 Limit Switch 319825-402 provided the ambient temperature remainsThe Lennox 33H78 Limit Switch is a critical OEM furnace safety control engineered for precise thermal monitoring in residential and commercial Lennox heating systems. Labeled with an L130 20F temperature rating, this high limit switch is designed to open the electrical circuit at 130F and automatically reset when the temperature drops 20F. As a vital HVAC replacement part, it prevents heat exchanger damage and hazardous conditions by interrupting the
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