Plumbers often notice that the hot water pipes in a plumbing system that lead to the bathroom or kitchen burst more frequently than the pipes carrying cold water. It is said that the ratio is at least four to one. The "Cold Water" usually freezes so as to lessen the flow of water in the pipes, or to stop the flow altogether, but the freezing seldom bursts the pipes unless the temperature is very low.
Proceedings of the Iowa Academy of Science
©1916 Iowa Academy of Science, Inc.
Brown, F. C. and Noll, Waldemar
"Why Hot Water Pipes in Household Plumbing Burst More Frequently Than Cold Water Pipes,"
Proceedings of the Iowa Academy of Science, 23(1), 237-240.
Available at: https://scholarworks.uni.edu/pias/vol23/iss1/39