"Worth it" is up to you. How bothered are you by the noise it currently makes?
Think about the noise while you're looking at the price tags on new units. Better yet, sit in the camper with the AC running while you're shopping for new units on your tablet/phone/pc.
If you are thinking "I can swing that," then go for it.
If you kinda scrunch up your face and say, "Naaaaaaaaah...." then wait another year.
Putting 10-ply tires on half ton trucks since aught-four.