Lochinvar & A.O. Smith 100208404 Pressure Switch 30067439-890 and other major HVAC brands

and other major HVAC brands

While the 7-pin layout is common

System Reliability: Protects against compressor failure by maintaining strict refrigerant flow rates in R-22 residential systems

Designed specifically for compatibility with Nordyne N-Series air handlers

Can this contactor replace a 1-pole or 2-pole model

Lochinvar & A.O. Smith 100208404 Pressure Switch 30067439-890 and other major HVAC brandsThe Lochinvar & A. O. Smith 100208404 Pressure Switch is a critical safety component designed for high efficiency water heaters and boilers. As a genuine OEM replacement part, it is functionally identical to the PRS2704, ensuring a precise fit and reliable performance for troubleshooting blocked flue or venting issues. This differential air pressure switch monitors the pressure across the combustion blower to verify proper airflow before allowing the