The answer to 'shut-off valve no hot water' is that a shut-off valve that is not allowing hot water to flow is a common plumbing issue that can have several possible causes. This could be due to a faulty valve, a blockage in the line, or a problem with the water heater itself.
Some common symptoms include no hot water coming out of faucets or appliances, and the shut-off valve may be difficult to turn or stuck in the closed position. Solutions can range from simply adjusting or replacing the shut-off valve, to addressing a larger issue with the water heater or plumbing system. In some cases, calling a professional plumber may be necessary, especially if the problem is more complex or requires specialized tools or expertise.