Lennox 34M74 Pressure Switch Els PW 17895 It is engineered for heavy-duty

It is engineered for heavy-duty performance in demanding furnace and air conditioning applications

Using it with NG would cause improper combustion and safety hazards

For technicians troubleshooting furnace short cycling or units that trip on high limit

you can use a longer lead as long as the excess copper tubing is carefully coiled away from the flame and high-heat zones

Lennox 34M74 Pressure Switch Els PW 17895 It is engineered for heavy-dutyThe Lennox 34M74 Pressure Switch is a critical safety component engineered for precision monitoring of combustion air in residential and commercial HVAC systems. This OEM Lennox replacement part features a single pole, single throw (SPST) electrical configuration, meticulously calibrated to an actuation point of . 33" WC (inches water column). Designed with a standard 1 4" barb connection, it ensures a secure, leak proof interface with the inducer