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As a complete blower assembly
the Trane VAL11539 Thermal Expansion Valve is the critical metering device required to maintain stable superheat
System Health Monitoring: Allows for quick identification of gas bubbles in the liquid line
water hammer
the "Z" indicates a non-standard shaft or mounting detail specific to the OEM application
Lennox 12L21 Pressure Switch 321894-709 As a complete blower assemblyAs a seasoned technician, you know that safeguarding the compressor from low side pressure drops is critical for system longevity. The Lennox 12L21 Pressure Switch is an OEM low pressure safety switch meticulously calibrated to monitor refrigerant levels and prevent vacuum conditions or evaporator freeze ups. Designed for integration into Lennox HVAC systems, including high efficiency condensing units and heat pumps, this Normally Open (NO) switch
US$ 140.00
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US$ 95.00
US$ 170.00
US$ 130.00