I don't use my car everyday and just wanted to know how often I should run the air con and how long for?

I leave mine on all the time. Every now and then turn the heat on full for a while to kill the smell that can occur in air con unit.

I would say once in a month if possible. 

1 hour ago, nbJubilee said:

I leave mine on all the time. Every now and then turn the heat on full for a while to kill the smell that can occur in air con unit.

Same here,just leave the ac on all year round.

I leave it on all the time too.

thanks all.