Key Benefits Precise OEM Specifications: Guarantees technical compatibility with HC21ZE121 and HC21ZS122 series inducer motors

While this model is factory-configured for natural gas with a

Universal Compatibility: Direct OEM replacement for Lennox 31J9601 and compatible with numerous Lennox-family brands

Veteran technicians rely on this OEM Danfoss part to maintain system reliability in demanding industrial environments where voltage fluctuations are common

Streamlined Installation: Compact chassis-mount form factor and spade terminals allow for rapid field replacement by contractors

Williams P271100 Flame Sensor Key Benefits Precise OEM Specifications:The Williams P271100 Flame Sensor is a critical OEM safety component engineered for precise flame rectification in Williams Forsaire counterflow furnaces. This sensor acts as the primary safeguard for the ignition sequence, utilizing a heat resistant probe to detect the presence of a burner flame. By communicating a microamp signal back to the integrated furnace control, it ensures that the gas valve remains energized only when a steady flame is