Description
The Lennox 63W56 is a two-stage, normally open (N/O) pressure switch engineered for precision pressure monitoring in HVAC systems. Featuring a Single Pole Single Throw (SPST) configuration and dual set points of 0.35″ and 0.60″ water column (“wc), this switch delivers staged pressure sensing to help protect furnaces, air handlers, and other HVAC equipment from unsafe operating conditions.
Key Features
- Two-stage pressure switch for dual-level system protection
- Set points: 0.35″wc and 0.60″wc for staged response
- SPST (Single Pole Single Throw) switching configuration
- Normally Open (N/O) contact operation
- Designed as a genuine Lennox OEM replacement part
- Helps safeguard equipment against improper draft or pressure conditions
Application
The 63W56 pressure switch is a direct OEM replacement for compatible Lennox furnaces and HVAC systems. It monitors inducer and combustion air pressure to verify proper airflow before allowing ignition, providing an essential layer of safety and operational reliability. Its two-stage design allows the control board to sequence operations based on two distinct pressure thresholds, making it ideal for multi-stage heating systems.
Why Choose the Lennox 63W56?
- Genuine Lennox OEM quality for assured fit and performance
- Dual set points reduce the need for multiple single-stage switches
- Normally open design ensures the system defaults to a safe state
- Supports proper sequencing in two-stage heating applications
- Easy drop-in replacement to minimize system downtime
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