air conditioning probs
 

I have a focus 2000 zetec 1.8. I have just had the the air conditioning system completely replaced. I have noticed that when switched on, out of the4 vents on the dashboardcold air only appears tocome out of the 2 right vents (drivers side UK). The far left one is warm, the middle left, well is neither here nor there. When I close the two right hand vents, cold air thenair comes out the two left hand vents more.

Is this normal?

Or is there a fault?