Siemens steam flow meter

Basics of hot water heating boilers - Specifying Engineer

What Is The Life Expectancy Of A Tank Water Heater? The hot water is stored in an insulated storage tank using a traditional electric or gas water heater. The average tank will survive between 10 and 15 years. Check the serial number if you're not sure how old your device is. Water heaters that are tankless (or "on demand") save electricity.