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Designed with a rugged extended copper connection
This specialized 21x26x4 canister-style media is critical for maintaining the intended static pressure and airflow velocity required by Lennox air handlers
a failing fan motor
Compatible with high-volume Robertshaw 1720 series and TSJ series domestic water heater valves
reducing the risk of short-cycling and operational downtime
Nordyne 626421R Control Board R-410A Designed with a rugged extendedThe Nordyne 626421R Control Board is a critical OEM Hot Surface Ignition (HSI) module engineered to manage the automated firing sequence of furnace burners. This technician grade replacement board (Revision R) is the direct superseding part for legacy numbers 626421, 1018 204, and 1018 504. Designed for single stage Nordyne gas furnaces and packaged units, it provides precise 24VAC control and features on board diagnostics via LED flash codes to