Which line provides heated water from the heater?

The line that provides heated water from the heater is the hot water service line. This line is designed specifically to transport water that has been heated by the water heater to various fixtures and outlets throughout the building, such as sinks, showers, and appliances that require hot water.

Hot water service lines are insulated to maintain the temperature of the hot water as it travels. Proper sizing and installation of this line are crucial for ensuring efficient delivery of hot water and avoiding energy loss.

In contrast, the cold water service line brings unheated water into the system, while the discharge line typically directs wastewater away from fixtures, and the vent line is involved in allowing gases to escape from the plumbing system. Understanding the role of the hot water service line is essential for any technician working with plumbing systems.