Before properly venting a gas water heater, it's important to determine if there is a proper natural draw. Discover the differences between single wall vents and double wall vents with help from a master plumber and heating specialist in this free video on gas water heaters.

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.