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Is the Rheem-Ruud 70-21858-12K a universal fan blade
typically used with the E series
Mercury-Reliability: Utilizes proven mercury-switch technology for consistent flame verification in high-temperature environments
Environmental Resilience: Rated for ambient temperatures ranging from -40°F to 175°F
preventing electrical failure in high-temperature environments
Williams P332490 Switch 326070-701 Is the Rheem-Ruud 70-21858-12K aThe Williams P332490 Switch is a critical OEM replacement fan switch specifically engineered for Williams direct vent furnaces. This automatic blower switch is designed to integrate seamlessly with the 2302 blower assembly, providing precise control over the heating cycle by managing the blower activation based on internal plenum temperatures. Constructed for professional grade durability, the P332490 functions as a reliable furnace limit control,