Why is my Nissan Micra making a strange sound when I turn on the AC?

I recently noticed that my Nissan Micra makes a strange sound whenever I turn on the AC. It almost sounds like a rattling noise. What could be causing this and should I be worried?

It's likely that there is an issue with the AC compressor. It could be a loose belt or a faulty compressor, both of which should be addressed by a mechanic. It's important to get this checked out sooner rather than later to avoid further damage to your car.

Check your AC filter. If it's clogged, it can cause the AC system to work harder and make unusual noises. This is an easy fix that you can do yourself by replacing the filter.