Lennox FP4597, 18L89 Pressure Switch, Blower and 50 similar items

Lennox FP4597 / 18L89 Pressure Switch is a dependable OEM blower proving pressure switch designed for compatible Lennox HVAC systems. This SPST pressure switch monitors airflow conditions within the system and ensures proper blower operation before allowing the heating or cooling cycle to proceed. Rated at 0.14 0.05" water column on rise, it helps maintain safe and reliable system performance. It is an ideal replacement for a worn or malfunctioning pressure switch in compatible Lennox equipment. Key Features Genuine Lennox replacement part Part Numbers: FP4597 and 18L89 Product Type: Pressure Switch Blower proving pressure switch SPST configuration Pressure rating: 0.14 0.05" WC on rise Designed for airflow verification Helps maintain safe HVAC system operation Specifications Brand: Lennox Part Number: FP4597 Alternate Part Number: 18L89 Product Type: Pressure Switch Switch Type: SPST Pressure Setting: 0.14 0.05" WC on Rise Application: Blower proving / airflow monitoring Compatible Models: Fits 1,200+ models Compatible Models CHA16-1353-01 CHA16-1353-03 CHA16-1353-04 CHA16-1353-05 CHA16-1353-06 CHA16-1603-04 CHA16-1603-05 CHA16-1853-01 and more. Why Choose This Item Choose this Lennox blower proving pressure switch for a reliable replacement that restores proper airflow monitoring and safe system operation. With its SPST configuration and 0.14 0.05" WC pressure rating, it provides dependable blower verification and helps ensure consistent performance across a wide range of compatible Lennox HVAC systems