heater not blowing hot on passenger side

[waynieRS]

has anyone come across this guys . have full heat on drivers side through all the vents but passenger side is cool compared.. A/ C cool through all vents just the heat .. some guys on a US forum are saying heater core and to flush it out and some are saying sticking heater flap (maybe ). quite a common problem from what i have heard . ... 2006 H6 outback

[BillyCorgi]

Is it an MY06 Model or MY07 Model?

MY07 post facelift had separate LH and RH heater controls and separate air mix door actuators?
Very Late model MY06 could possibly be the same heater but with single heat control.
Maybe check you VIN on PartSouq database to determine what heater the car is fitted with, as it sound like an airmix door (non-functioning) issue.

[waynieRS]

ok bud . will check and see what it throws up .. cheers

[waynieRS]

checked moved of heater acuator doors today and all moving freely ... im thinking its heater core now ... is CLR safe to use to clean the core out ?