I just moved in to my place, and the shower knob is pointing straight up. If I turn it to the right I have ridiculously cold water. If I turn it to the left I have ridiculously hot water, unless I go as far left as possible, at which point it is bearable to shower and not scolding. Any ideas on this would be greatly appreciated. Thanks.

If it is a 'chateau', you pull the handle out to turn on and left for hot and right for cold. If it is a 'positemp' you turn left to turn on cold and continue left to get warmer then hot.
It sounds like a positemp and the handle is put on wrong or the cartridge is backward. Try to remove the handle and simply reinstall pointing down.

if it is a 'chateau', you pull the handle out to turn on and left for hot and right for cold. if it is a 'positemp' you turn left to turn on cold and continue left to get warmer then hot.
it sounds like a positemp and the handle is put on wrong or the cartridge is backward. try to remove the handle and simply reinstall pointing down.

Should I turn the water off first if I take the handle off? I'm just not sure if the cartridge is held in with a clip or something. Cause I don't want to take that screw out and get soaked...

Water must be off and valve opened and all pressure released before taking clip out.

water must be off and valve opened and all pressure released before taking clip out.


FixedA!

Just the handle was backwards. Thanks