Why is my Vauxhall Zafira Life's heating system not working?

I recently noticed that the heating system in my Vauxhall Zafira Life does not seem to be working properly. When I turn on the heat, it blows out only cold air. What could be the possible causes of this issue and how can I fix it?

It could be a problem with the heater control valve or the blower motor. Have you checked the fuse for the heating system? A blown fuse could also cause this issue.

Another possible cause could be a clogged heater core. Over time, debris and buildup can block the flow of hot air. Try flushing out the heater core with water to see if that helps.

If none of the above solutions work, it may be an issue with the thermostat. The thermostat controls the temperature of the hot air coming from the heater core. Consider getting it checked and replaced if necessary.