Unusual Heater Issue

[scraprat]

I look on the forums every so often when I need advice or help and often search previous posts however ive found recently that the heater is blowing hot on the passenger side through all the vents and different settings, BUT on the drivers side it only blows warm (the difference is really noticeable)???

Ive stripped down the settings, ive stripped down the mechanism, and all appears to be working fine. I just don't get why only one side is hot and the other warm, any advice would be gratefully received, the model is a 2001 2lt petrol 4x4 NRG vvti.

[gjnorthall]

Does the flow appear balanced on both sides of the car? Does the temperature appear about the same across the matrix?

[scraprat]

Im not sure im going to look for the heater matrix and check...before i bought the car the head gasket had recently been done so theres a posibility i believe for an air lock or blocked heater matrix.