Lennox 14A53 Pressure Switch 318518-761 The C75-140 specification ensures the

The C75-140 specification ensures the unit manages circuit engagement and disengagement within critical temperature and timing windows to prevent short cycling and mechanical fatigue

typically used on 4-inch high-pressure or 5-inch low-pressure configurations

The York S1-024-24103-000 is an OEM 24V SPST Relay designed for precision switching in residential and light commercial HVAC equipment

allowing for easy capacity adjustments via exchangeable orifice assemblies

This is a 208/230V

Lennox 14A53 Pressure Switch 318518-761 The C75-140 specification ensures theThe Lennox 14A53 Pressure Switch is a critical safety component designed for two stage gas furnaces, specifically engineered to monitor dual pressure thresholds of . 40" WC and . 70" WC. As a vital furnace draft inducer switch, it ensures the combustion blower is moving sufficient air to clear flue gases before ignition occurs. This dual stage pressure switch prevents hazardous operation by opening the electrical circuit if the static pressure falls