using a genuine Nordyne furnace part like the 632493R maintains the equipment’s factory-spec safety ratings and helps prevent premature component failures

it can also operate solely on battery power

High-Temperature Rating: Specifically built for high-heat environments where standard residential limit switches would fail

Maintenance-Free Operation: The NDIR sensing element provides long-term stability and eliminates the labor costs associated with manual CO2 sensor calibration

Lochinvar & A.O. Smith 100208389 Pressure Switch 340155-7024 using a genuine Nordyne furnaceThe Lochinvar & A. O. Smith 100208389 is a critical safety component designed specifically for monitoring natural gas pressure in high performance heating systems. As a genuine OEM replacement pressure switch calibrated at 4. 1" WC, it serves as the primary safeguard to prevent ignition or sustained operation during low pressure scenarios. This part is a direct replacement for the obsolete PRS2004 and PRS2004K, ensuring seamless integration into