Indian Ringneck sneezing — when should I worry?

My Indian ringneck has been sneezing a few times a day for the past week. No discharge, still eating and playing normally. Could it be the dry winter air from heating? Or should I book a vet visit?

I got mine from a local bird shop in Pickering. Great selection and the staff actually knows about birds.

I actually disagree with this. In my experience with my Indian ringneck, the opposite was true. But I know every bird is different.