Description
The Trane SWT1744 is an OEM high limit switch designed to protect furnaces and air handlers from overheating by interrupting system operation when supply-air temperatures reach the 190°F setpoint. Its integrated fan time delay function manages blower operation automatically — keeping the fan running after burner shutoff to extract residual heat and improve comfort, then shutting the blower down once temperatures fall to a safe level.
Key Features
- 190°F high-limit setpoint for reliable overheat protection
- Integrated fan time delay controls blower on/off sequencing automatically
- Dual-function design replaces separate limit and fan control components
- OEM Trane replacement part — engineered for precise fit and performance
- Helps prevent heat exchanger damage caused by sustained high temperatures
- Improves system efficiency by maximizing heat extraction after burner shutoff
Application
The SWT1744 is a direct OEM replacement for Trane and American Standard furnaces and heating systems requiring a combined high-limit and fan time delay control. It is ideal for HVAC technicians performing maintenance, service, or component-level repairs on residential and light commercial heating equipment.
Product Specifications
- Brand: Trane
- Part Number: SWT1744
- High Limit Setpoint: 190°F
- Function: High Limit Switch with Fan Time Delay
- Application: Furnaces and Air Handlers
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