Car experts: Why is the climate control in my car acting up?

I’ve had mice in the car who have clogged up the heating and AC vents with the husks from sunflower seeds.

When I turned on either one, the husks blew out of the vents under the seats and left the husks on the floor mats. But they are hard to miss.

@gailcalled Yes, I had a mouse get minced in my AC fan a couple of summers ago. This time there is no squealing, fan working fine just the obvious difference in temp.
Maybe it’s a rattlesnake in there this time. lol

How big are your vent openings?

@gailcalled Average I assume. haha No, there is NO way I have a snake in my AC. Nooooo!

Well….where are all the car guys this morning? lol

Individual climate control is a fickle beast, and one I am not terribly familiar with. For instance, I am not sure if you have two separate heater cores. That is a possiblity, in which case one clogged core would not work while the other one would get nice, cold R134 and thus chill the air.

What type of car?

I was just researching and it looks like it might be the passenger side air/door blend actuator. Whatever that is! Obviously the dash will have to come off, oh boy, $80 an hour labor.
Well shit…I will call my mechanic on Monday. Pfft! lol

It might just need topped up with refrigerant

I bet you need to add refrigerant. That is one of the symptoms when it gets low, it blows cool on one side only.

Oooh, maybe it is that somple. We shall see tomorrow. Thanks everyone!

Yep, it was in need of 14 oz. of refrigerant. It has been a long, hot summer! Damn..still in the low 90’s this week….what I wouldn’t give for a giant freaking STORM right about now. haha
Thanks everyone for your input! :-)