Description
The Trane SWT04157 is an OEM airflow switch designed to deliver dependable airflow detection and system protection in Trane HVAC equipment. Carrying the L110-20 designation, this switch monitors air movement within the system and interrupts operation when adequate airflow is not confirmed — helping prevent equipment damage, overheating, and unsafe operating conditions.
Key Features
- OEM Trane replacement airflow switch — ensures proper fit and function
- L110-20 model designation for accurate cross-referencing
- Monitors airflow to protect HVAC equipment from unsafe operation
- Interrupts system operation when airflow is insufficient
- Designed for reliable, long-term performance in Trane systems
- Direct drop-in replacement minimizes downtime during service
Application
The SWT04157 airflow switch is intended for use in Trane commercial and residential HVAC systems where airflow verification is required for safe and efficient operation. It is a critical safety component that helps ensure the system only runs under proper airflow conditions, protecting heat exchangers, compressors, and other components from damage caused by restricted or absent airflow.
Product Specifications
- Brand: Trane
- SKU / Part Number: SWT04157
- Model: L110-20
- Type: Airflow Switch
- Application: Trane HVAC Systems







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