Lennox 19F44 (606569-17) pressure switch is a genuine OEM furnace safety component engineered to verify proper draft and airflow before ignition. This pressure switch plays a critical role in protecting the furnace by preventing operation when unsafe venting or combustion conditions are detected. Designed to meet Lennox factory specifications, it delivers accurate pressure sensing, dependable performance, and long-term reliability in residential and light commercial gas furnace applications.

Manufactured by Lennox, this OEM replacement pressure switch installs directly in compatible Lennox furnace models without modification. It is commonly used during service repairs to restore proper furnace startup, resolve pressure-related fault codes, and maintain safe heating operation. Using an original Lennox pressure switch helps ensure system compatibility, correct calibration, and consistent performance compared to aftermarket alternatives.

Replacement history for this part includes older part numbers 104936-03 and 606569-17, with 19F44 being the most recent catalog number. This makes it a suitable replacement when upgrading from earlier revisions. Each unit is sold individually and weighs approximately 0.5 lb, making it easy to handle during installation or service calls.

Brand: Lennox
Catalog Number: 19F44
Model / Part Number: 606569-17
Base Unit of Measure: Unit(s)
Gross Weight: 0.5 lb