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Whether you are performing a seasonal refrigerant circuit cleanup or a full compressor retrofit
Compatible with various Amana and Goodman gas furnace models
Key Benefits Direct OEM Replacement: Eliminates the need for field modifications
ensuring the condensing boiler operates safely
Lennox 18M63 Pressure Switch Refrigerant Whether you are performing aThe Lennox 18M63 Pressure Switch is a high precision, two stage OEM furnace part specifically engineered for compatible Lennox, Armstrong, and Ducane heating systems. This dual action component provides critical monitoring of combustion air pressure, ensuring the inducer fan maintains the proper venting required for safe ignition and continuous high efficiency operation. With fixed set points of 0. 20" WC and 0. 45" WC, this switch accurately