The answer to 'toilet no hot water' is that the issue is likely due to a problem with the water heater or the plumbing connecting the toilet to the hot water supply. This can be caused by a malfunctioning water heater, a blockage in the hot water line, or a problem with the shut-off valve or other plumbing components.
Some common symptoms include the toilet only producing cold water, the water taking a long time to heat up, or the water never reaching a comfortable temperature. Solutions may involve adjusting the water heater temperature, clearing any blockages in the hot water line, or replacing faulty plumbing parts. If the issue persists or you're not comfortable troubleshooting it yourself, it's best to call a professional plumber to diagnose and fix the problem.