The 2012 national gas codes in the United States have recently made a significant changed. This change is substantial for tankless water heater systems as the old code required ¾ inch gas piping which many homes only had as an upgrade.
In the past if you had your hot water heater fail and you decided to upgrade to a tankless system you may have been delayed or forced to go back to a conventional tank type system due to your homes standard ½ inch gas lines.
Home builders are now able to install ½ inch gas lines without predetermining if the home owner is going to utilize a tankless or conventional tank. The ½ inch pipe is now able to be configured to support either water heating option.
The newly lifted restriction makes it even easier to Go Tankless – now we just need this same update in our Canadian gas codes.