Description
The Trane SWT1943 is an OEM air switch engineered for precise airflow detection across a pressure range of 0.17 to 5 inches water column (WC). Designed as a direct Trane replacement component, this switch provides dependable proof-of-flow sensing to protect HVAC equipment from operating under unsafe or insufficient airflow conditions.
How It Works
The SWT1943 monitors differential air pressure within the system. When airflow meets the minimum threshold, the switch closes its circuit to confirm safe operation. If airflow drops below the set point, the switch opens to signal a fault condition — helping prevent heat exchanger damage, compressor issues, and other costly equipment failures.
Key Features
- Pressure sensing range: 0.17–5″ WC (inches water column)
- OEM Trane replacement part — engineered to factory specifications
- Provides reliable proof-of-airflow protection for HVAC systems
- Helps safeguard equipment against low-airflow damage
- Direct drop-in replacement for compatible Trane equipment
Applications
- Trane rooftop units and air handlers
- Furnace and heat pump airflow proving circuits
- Commercial and residential HVAC systems requiring airflow verification
Why Choose OEM Trane Parts?
Using genuine Trane replacement components ensures compatibility, maintains equipment warranty integrity, and delivers the performance reliability your system was designed around. The SWT1943 is the correct factory specification part for applicable Trane equipment.
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