The answer to 'water heater installation slow draining' is that a slow draining water heater is often caused by sediment buildup in the tank. As water heaters age, minerals and other particles in the water can accumulate at the bottom of the tank, restricting water flow and drainage. This can lead to slow draining or even complete blockage.
Other potential causes include a faulty drain valve, a clogged drain line, or issues with the water pressure or plumbing system. Regularly flushing the water heater can help prevent sediment buildup and maintain proper drainage.