Yes, you are correct, this will not happen with distilled. However, in my own experience, you really don't need to use distilled water with the ReptiFogger. However, if using tap water, some maintenance will be required, like you said. The "condenser" is just a metal plate and can easily be cleaned.
Just wanted to give people a heads up, but perhaps it's more directed towards Exo-terras screen mesh, which they claim to be stainless
