How do I fix my Vauxhall Astra's HVAC system?

I've noticed that my Vauxhall Astra's HVAC system is not blowing cool air anymore. What could be the issue and how can I fix it?

It could be a problem with the compressor. You should check the refrigerant levels and if they are low, it might be time for a recharge.

Another common issue is a clogged cabin air filter. Check and replace if necessary to improve air flow.

There could also be a problem with the blower motor. It might need to be replaced if it is not functioning properly.