The Lennox 57M66 Pressure Switch is a critical safety component designed for precise combustion air proving in high-efficiency gas furnaces

Integrated Safety Diagnostics: The Intellivent thermostat provides reliable gas shutoff and safe lighting features to prevent main burner engagement without a confirmed pilot

This 24V replacement solenoid coil is engineered for high-cycle reliability in gas valve actuation

This 24V integrated ignition control (UTC 1097-210) manages the complete combustion sequence

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Sporlan 450022-001 Drier R-22 The Lennox 57M66 Pressure SwitchThe Sporlan 450022 001 Drier, specifically the SLD13 7SVHH, is a high performance suction line filter drier engineered for critical system clean up following a compressor burnout. Featuring a 7 8" ODF sweat connection and a 13 cubic inch desiccant volume, this unit utilizes the specialized HH charcoal core. This porous molded core is professionally formulated with a blend of molecular sieve and activated alumina to aggressively remove moisture,