Lennox 14T66 Pressure Switch 326058-758 this HVAC blower motor housing

this HVAC blower motor housing eliminates common resonance issues and "hunting" sounds caused by improper scroll geometry

always ensure the diaphragm is oriented according to the manufacturer’s installation instructions to prevent moisture accumulation in the sampling tubes

stable operation during heating and cooling cycles

time-delay design allows for motor and transformer start-up currents without premature failure

Lennox 14T66 Pressure Switch 326058-758 this HVAC blower motor housingThe Lennox 14T66 Pressure Switch is a critical dual stage safety component engineered for 90% efficiency modulating gas furnaces. As a veteran technician knows, maintaining the correct pressure differential is non negotiable for safe combustion. This OEM Lennox replacement part is factory calibrated to operate within a specific water column range of 1. 00" to 0. 25" WC, ensuring the inducer motor pulls the required vacuum before the ignition sequence