Setting and adjusting the hot water heater thermostat is all about the gas valve, which lets gas in through the bottom burner. Learn about using a thermistor to help control the temperature of a hot water heater with help from a master plumber and heating specialist in this free video on hot water heater thermostats.

Expert: Chris Spannagel
Bio: Chris Spannagel has been a master plumber for 17 years and is licensed in Arizona.
Filmmaker: Chuck Tyler

Series Description: Keeping a hot water heater in good working condition is the best way to keep warm water. Discover how old water heater valves will use more water than newer ones and more with help from a master plumber and heating specialist in this free video series on electric heaters.