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Engineered for compatibility with the MITW 10 Series and various D-series models (including D38T155 and D75T125)
While originally designed for R-134A
protecting the blower shaft and bearings from the eccentric loading typically caused by aftermarket universal alternatives
Using a single-stage switch will cause the system to fail during stage transitions
Lennox 20J97 Pressure Switch 320734-701 Engineered for compatibility with theThe Lennox 20J97 Pressure Switch is a mission critical safety component engineered for high efficiency HVAC units requiring precise draft proving. This OEM Lennox replacement part features a 1. 15" WC set point and a Single Pole Single Throw (SPST) configuration, ensuring the combustion air inducer is generating the necessary static pressure before allowing the ignition sequence to proceed. Designed with a standard 1 4" barb connection, it integrates
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