Hello all! New member here.

I have an 07 camry hybrid that has started to only blow cold air on the passenger side when I use the ac. Driver side blowing hot air. I tried pulling off the driver side blend door actuator thinking and hoping it was only that but when I did and switched the door manually with my hand it still blew hot air. Does anyone think it might just need a refrigerant charge? I'm hoping it is as I know how expensive that can be. I do a lot of work myself but ac systems i will not mess with other than charging up a little refrigerant or replacing parts like the actuator. Any thoughts? Thank you.