Wheel bearing front and heating

Slowly but surely my front wheel bearings are getting loud. Thank you here for the FAQ! :-)
Should one prefer a certain but inexpensive manufacturer at the warehouses?
No one will have used wheel bearings lying around.

Puenktlich, now that the summer is taking a break in South-D
(I've been out of hot South Europe for a few days) my heating is no longer at all.

Before the holiday, I was still at Bosch, reading the error memory of the climate.
The error temperature valve, was still stored as sporadic,
We've lost him, and he didn't perform after that.
Is there anything else to blame for not being heated?

Before the *winter* I have to fix this.

By the way: the air is coming from Allen Luftduesen by the way, I have (before the holiday) simply
a massive slightly flexible plastic rod against the flap, behind the middle airduses (center console) permanently pressed.
Certainly not the fine kind but the car was not a heat trap.

P.S. If someone can give me a brief description,
which contacts I need to open/check with the actuator, the temperature valve.
(and if the car has to be in the workshop it is also good to call the error the same)
I'd have to disassemble that, the engine is in this big, round box,
next to which is also the passage of the actuator?

Greeting
Bernd