Lennox 13W22 – 13W2201 is an OEM sequencer relay designed for electric heat applications in Lennox ECB26 series air handlers. This sequencer controls the staged activation and deactivation of electric heat elements, ensuring proper load management, smooth operation, and reduced electrical stress during heating cycles. It is engineered to meet Lennox factory specifications for dependable performance and long service life.

This sequencer relay is specifically used in ECB26-12.5CB, ECB26-15CB, and ECB26-20CB electric heat kits, making it a direct-fit replacement for failed or worn sequencers. Using a genuine Lennox sequencer helps maintain correct timing, protects heating elements, and supports safe operation of the electric heat system.

 

Key features and specifications:

• OEM Lennox electric heat sequencer relay
• Part number: 13W22 (also referenced as 13W2201)
• Designed for staged control of electric heating elements
• Ensures proper on/off timing to reduce electrical surge and component wear
• Compatible with Lennox ECB26-12.5CB, 15CB, and 20CB air handlers
• Direct replacement with factory-matched electrical characteristics

 

Applications:

• Lennox ECB26 electric heat air handlers
• Residential and light commercial electric heating systems
• Replacement of failed or intermittent heat sequencers