Lennox 51W91 Furnace Pressure Switch

The Lennox 51W91 Furnace Pressure Switch is a reliable control component designed for safe furnace operation. This Type Pressure Switch is used On Furnace to monitor draft pressure and ensure the burner only ignites when it’s safe, delivering dependable performance with a 0.95 Inch WC pressure rating.

Designed as an OEM Lennox replacement part, this furnace pressure switch supports robust safety controls in a variety of gas furnaces. Its durable design withstands routine furnace cycles while maintaining accurate pressure sensing. Compatible with common HVAC configurations, it helps prevent unsafe startup and protects your system from damage. Use this component to maintain optimal furnace performance and reliability, especially when keeping a Lennox system running.

• OEM Lennox replacement part for reliable compatibility
• Pressure rating 0.95 Inch WC ensures accurate sensing
• Easy installation with standard fitments
• Monitors draft pressure to safely control ignition
• Durable construction for long service life