Lennox 57W79 Pressure Switch

.70"WC Green Pressure Switch

57W79 is identical to 57W7901, R101432-14, IS20102-3137, R45695-004

Lennox 57W79 Pressure Switch – 0.70" WC Green OEM Furnace Pressure Switch

The Lennox 57W79 Pressure Switch is a genuine OEM replacement part designed to ensure safe and reliable furnace operation. Engineered to precisely monitor inducer draft performance, this pressure switch activates at 0.70″ WC, providing accurate airflow verification and dependable system protection.

Perfect as a direct replacement, the Lennox 57W79 maintains factory performance standards and helps restore furnace reliability when dealing with ignition, airflow, or safety-related issues.

Product Features

• Brand: Lennox

• SKU / Part Number: 57W79

• Activation Pressure: 0.70" WC

• Type: Green pressure switch

• Function: Monitors inducer draft for safe furnace operation

• Quality: OEM-grade replacement meets factory specifications

• Compatibility: Designed for select Lennox HVAC systems

Description

Maintain safe and dependable heating performance with the Lennox 57W79 Pressure Switch. This OEM-grade component ensures proper furnace operation by confirming adequate airflow before ignition. With a factory-set activation of 0.70″ WC, it delivers consistent performance and serves as a reliable drop-in replacement for worn or faulty switches.