Lennox 74K96 – LB-91053A Heat Exchanger Leak Test Kit is a genuine OEM diagnostic kit designed to help HVAC professionals accurately detect heat exchanger leaks in Lennox gas furnaces. This kit is used during furnace inspections, troubleshooting, and safety checks to identify cracks, corrosion, or failures that may allow combustion gases to mix with supply air.

The LB-91053A leak test kit supports proper furnace diagnostics by providing the necessary components to perform controlled leak testing in accordance with Lennox service procedures. Identifying heat exchanger leaks early is critical for maintaining system efficiency, preventing carbon monoxide exposure, and ensuring compliance with safety standards.

Designed for professional service use, this Lennox heat exchanger leak test kit is commonly used during routine maintenance, warranty evaluations, and furnace failure analysis. As an OEM Lennox part, it ensures compatibility with approved testing methods and delivers reliable, repeatable results in the field.

 

Key features:

• Genuine Lennox OEM diagnostic kit
• Designed for heat exchanger leak detection
• Supports safe furnace inspection and troubleshooting
• Helps identify cracks, corrosion, and exchanger failures
• Essential tool for HVAC service and maintenance professionals

 

Applications:

• Lennox gas furnaces
• Heat exchanger safety inspections
• Preventive maintenance and diagnostics
• Warranty and service evaluations

 

Part numbers:
Lennox 74K96
LB-91053A
KIT-HT EXCH LEAK TEST

 

This Lennox heat exchanger leak test kit is intended for use by trained HVAC professionals and should be used in accordance with Lennox service documentation and safety guidelines.