Lennox 25B77 Control

Air Handler Control

25B77 is the direct replacement for 18Y04

Lennox 25B77 Air Handler Control – OEM Field Replacement Kit | 605341-15

The Lennox 25B77 Air Handler Control is a genuine OEM field replacement kit designed to restore reliable functionality to your Lennox HVAC air handling system. Also referenced under part number 605341-15, this air handler control is engineered for seamless integration and long-lasting performance in residential and light commercial applications.

Whether you're performing routine maintenance or replacing a failed component, the 25B77 control board ensures compatibility and optimal system operation. Backed by Lennox's trusted quality, this control unit is built to meet the exact specifications of your original system.

🔧 Key Features:

• OEM Replacement Part – Ensures exact fit and performance

• Part Number: 25B77 (Replaces 605341-15)

• Type: Air Handler Control Field Replacement Kit

• Application: Compatible with Lennox air handler systems

• Reliable system control for heating and cooling applications

• Easy to install for professional HVAC technicians

📦 Specifications:

• Brand: Lennox

• Catalog Number: 25B77

• UPC/EAN: 66255154869

• Unit of Measure: Each (EA)

• Product Type: Air Handler Control Kit

Maintain your Lennox HVAC system’s performance and reliability with the Lennox 25B77 Air Handler Control—the perfect solution for fast, factory-approved replacement.