A/C Pro

How do I know if my compressor is working?

If the compressor is engaging, the center of the compressor clutch will turn with the outer pulley. If the pulley does not turn and there is a loud squeal, this usually indicates a locked up compressor. The compressor and drier will need to be replaced.

Here is a video showing a compressor that is running properly.

compressor-engaged  compressor-disengaged