HELP! I live in new construction, and I have no hot water in one of my showers that doesn't get used. I also sell real estate so I know that this is a common occurrence in new construction when showers/tubs don't get used they end up with no hot water. I would just like to know is it a simple fix that I can do or do I need to call a plumber?

Actually this is not common for new property, even unused, to get clogged up. I suspect the mixing valve is plugged on the hot side with debris. Do you know how to remove thehandle, escutcheon plate and cartridge?/ If not try to tell me brand and model.