What does moderate resistance on a "bellyband" crankcase heater indicate during a service check-up?

Moderate resistance on a "bellyband" crankcase heater suggests that the heater will operate effectively. A crankcase heater is designed to warm the compressor oil, preventing it from becoming too viscous and ensuring proper lubrication when the system starts. Moderate resistance indicates that the heating element is intact and capable of generating heat, which is essential for the proper functioning of the compressor during startup, especially in colder conditions.

This level of resistance typically falls within the manufacturer’s specifications for normal operation. If the resistance were too low or too high, it could indicate an issue with the heater that would require further investigation. Therefore, moderate resistance confirms the heater is functional and is a good sign that it will perform as intended when powered on.