The answer to 'water heater slow draining' is that a slow-draining water heater is often caused by sediment buildup in the tank. Over time, minerals and other particles can accumulate at the bottom of the tank, restricting the flow of water as it drains. This can lead to longer wait times when emptying the tank or a complete blockage.
Some common symptoms of a slow-draining water heater include water taking longer to drain, reduced water pressure, and a gurgling sound as the tank empties. To fix this issue, you may need to flush the water heater tank to remove the sediment buildup. This is a relatively simple DIY task, but if you're not comfortable doing it yourself or the problem persists, it's best to call a professional plumber to inspect and service the water heater.