Why is my Vauxhall Astra making a weird noise when I turn on the AC?

Every time I turn on the AC in my Vauxhall Astra, I hear a strange noise coming from the engine. It's almost like a rattling sound. What could be causing this and how can I fix it?

It sounds like your AC compressor may be faulty. I suggest taking it to a trusted mechanic to get it checked out and repaired if necessary. It's not something you want to ignore.

It could also be an issue with the serpentine belt or tensioner. Have those components checked as well to rule out any other potential causes.

Make sure to regularly change your AC filter and clean any debris that may be clogging the system. This can help prevent potential problems in the future.