Heil Quaker ICP 1173821 Defrost Sensor 318172-701 Always verify the model number

Always verify the model number on your unit's rating plate

If the kit is a bolt-on style

this gasket is a standard inclusion in full 4-inch E-valve repair kits

Always verify your specific model number on the furnace cabinet against the manufacturer's parts list to ensure a correct match

extending the life of the blower wheel and ductwork

Heil Quaker ICP 1173821 Defrost Sensor 318172-701 Always verify the model numberThe Heil Quaker ICP 1173821 Defrost Sensor is a critical OEM replacement component engineered for precision evaporator coil temperature monitoring in residental and commercial heat pumps. Designed for high accuracy frost accumulation detection, this sensor measures the thermal state of the outdoor coil to signal the defrost control board when it is time to initiate or terminate a defrost cycle. By ensuring that the unit only enters defrost mode when