For multi-stage heat pump applications

The McDonnell & Miller 325400 Head Gasket (Model 150-14) is a critical component designed specifically for sealing flat flange head units in 150

Technicians should use a manometer to verify the inducer is pulling at least -0

Can the brass wrench cap be used to torque the valve core

reducing diagnostic time during service calls

Lochinvar & A.O. Smith 100166230 Pressure Switch Els PW 17895 For multi-stage heat pump applicationsThe Lochinvar & A. O. Smith 100166230 Pressure Switch is a critical safety component designed for precise low air pressure monitoring in commercial and residential heating systems. Calibrated to a fixed set point of 1. 35" WC, this switch ensures that your EB or EW water heater or boiler maintains proper venting and airflow before allowing the ignition sequence to proceed. As a veteran grade OEM replacement part, this SPDT pressure switch (Single Pole