Description
The Heatcraft Refrigeration 28917401 Drain Line Heater Thermostat is a temperature control component that regulates heater operation to prevent freezing in drain lines. It works by sensing thermal levels and activating or shutting off the heater to maintain safe operating conditions, ensuring proper drainage flow in HVAC systems during operation. Positioned along the drain line heating assembly, it connects with the heater and control circuit to manage heat output based on demand. It prevents ice buildup, reduces the risk of blockages, and supports consistent system performance in refrigeration and cooling applications.









