Lennox 14T64:

Lennox 14T64 (104936-01) is a factory-specified Combustion Air Pressure Switch Kit designed to maintain safe furnace operation by monitoring airflow and proving proper draft before ignition. Engineered for high and low pressure activation, this replacement kit helps prevent nuisance lockouts and ensures consistent performance in compatible Lennox high-efficiency gas furnace models. Ideal for restoring system reliability when experiencing intermittent startup issues, pressure faults, or airflow-related error codes.

Key features:
• Genuine Lennox 14T64 / 104936-01 replacement
• Set point high: 1.00 inch water column
• Set point low: 0.25 inch water column
• Supports safe burner ignition and combustion airflow verification
• Helps resolve pressure switch failure, startup interruptions, and fault codes
• Designed for select Lennox high-efficiency furnaces

Applications include routine maintenance, system troubleshooting, and replacing failed pressure switches to restore safe furnace operation. Stocking an authentic Lennox switch ensures proper tolerances and compatibility for long-term reliability. If you need compatibility confirmation, provide the furnace model number and we can verify fitment.