Tapping noise from heater?

[Starlite]

I have this noise from the heater on my 3.0 2007 legacy.

Play it loud and you will hear it.

 

https://youtu.be/qlw3ubT2gz0

Edited August 9, 2017 by Starlite

[forester2002s]

Could be some debris in the heater-fan.

Perhaps a dried leaf hitting the vanes of the fan-cage?

[Starlite]

I dont think there is some debrie in the fan .

This is something else and when i shut down the car i can hear some strange noise from the heater.

[Fairtax4me]

One of the mode control actuators is stripped. Could have some debris jammed in the flap that it controls or the flap could have just broken on its own. Common in a lot of American vehicles but haven't heard of it happening very often in Subarus.

 

I can't give specifics on locations but you should be able to find it by looking/listening/feeling for the actuator to clunk.

You can partly narrow it down by moving the blend controls and mode controls to see which mode makes it stop.

[brus brother]

agree with @Fairtax. I have the same issue on my 05 OB. Try switching mode controls and you will hear that the noise will stop/change as you switch between modes. Mine is intermittent.