The drain cock with a hose connection at the bottom of a water heater is primarily used to?

The drain cock with a hose connection at the bottom of a water heater is primarily used to flush sediment out of the heater. Over time, minerals and sediments can accumulate inside the tank, especially in areas with hard water. These sediments can lead to reduced efficiency, corrosion, and even damage to the water heater if not addressed. By using the drain cock to connect a hose, the sediment can be flushed out effectively during maintenance. This process helps maintain optimal performance and extends the lifespan of the water heater, ensuring that it operates efficiently and safely over time. Regular flushing is an essential part of water heater maintenance that prevents buildup and enhances the quality of water supplied.