If the millivolt output drops below the required threshold

Doing so can lead to heat exchanger fatigue

Integrating this OEM Rheem replacement part ensures the diagnostic board receives accurate continuity signals

The McDonnell & Miller 310800 Gasket is a critical sealing component engineered specifically for the 21 Series and 221 Series float-operated water feeders

This 100-250F auto limit switch features an automatic reset mechanism

Armstrong Furnace R44992-001 Sensor Ignitor If the millivolt output dropsThe Armstrong Furnace R44992 001 Sensor Ignitor is a critical OEM replacement component designed for high efficiency gas furnaces. This dual purpose assembly functions as both a hot surface igniter and a flame sensor, ensuring precise ignition sequences and reliable flame rectification. Engineered for high temperature durability, the R44992 001 provides the resistance required for consistent heating cycles while maintaining the millivolt signal