Prius 2007 (gen 2) A/C noise issue, inside cabin and passenger side of engine bay

electric ac compressor is pretty noisy, but usually not too bad inside the cabin with the windows closed.
vent damper motor might need replacing, or could just be stuck damper.

 

The motor that puts the air out of the different vents is probably acting up it usually makes a clicking or hunting noise like if you move it from the face vents to the floor you may hear this click click click click click noise and the air doesn't move and then it'll do the same noise again and the air doesn't move or it might start to move down to the floor The thing is hunting trying to figure out what position you're actually selecting because whatever is going on inside of it apparently if you look down on the floor on the driver side of the car but look towards the passenger side in the center of the car you see the white box which is your air conditioning heater core casement assembly and on the side of that is this black square-ish looking device I believe that is the device that selects where the air is going to be directed to which events and if you put your hand on that while somebody's making changes to where they want the air to come out I think you'll hear that or feel that box clicking and get that mess off and look inside of it and see what you can see or just replace it I can't imagine what a new one would cost some people have suggested maybe pieces of 10 or whatever from the mechanism maybe laying in there and just need to be cleaned out I've never looked I can make mine work enough to wear I haven't bothered ripping it out I have a parts car I'm fixing to tear this part out of just to have a look at it.