Lennox 12W49 Pressure Switch

1.35"wc SPST 1/4" barb connection Pressure Switch

Lennox 12W49 Pressure Switch – 1.35" WC SPST | R20558702

The Lennox 12W49 Pressure Switch (Model R20558702) is a genuine OEM replacement part designed to ensure safe and reliable performance in Lennox HVAC systems. This precision-engineered pressure switch actuates at 1.35" W.C., helping protect your furnace by monitoring proper airflow and preventing unsafe operation.

Built with a durable SPST configuration and a standard 1/4" barb connection, the Lennox 12W49 offers dependable functionality and easy installation, making it an ideal choice for both professional technicians and system owners.

Key Features

• Brand: Lennox

• Catalog Number: 12W49

• Model/Part Number: R20558702

• Type: Pressure Switch

• Actuation Pressure: 1.35" W.C.

• Configuration: SPST

• Connection: 1/4" barb

• UPC / EAN: 66255134184

• Base Unit of Measure: Unit(s)

Benefits

• Genuine Lennox OEM replacement for reliable system compatibility

• Ensures safe furnace operation by verifying proper airflow

• Durable, high-quality construction for long-term performance

• Quick and easy installation with standard barb fittings

Applications

Designed for Lennox furnaces and HVAC systems requiring a pressure switch actuated at 1.35" W.C. with SPST configuration.