Plumbing engineers and designers have been talking about it for what seems like forever. Plumbing installers have been looking into ways to become more efficient. Plumbing manufacturers have been collecting the data to better size their equipment. And plumbing inspectors and plan reviewers have been acutely aware of the need for change for a long time.
Of course, anyone in the plumbing industry knows what I am talking about is the Hunter’s Curve. And, in the U.S. plumbing industry, there has been widespread consensus that we have been oversizing our domestic water systems for decades. While the work Roy Hunter completed in 1940 was revolutionary for the time, we all agree that it is well past time to update the way we size these systems.