Why every home needs a DHW recirculation line

摘要

People here in the U.S. are accepting the concept of using less—whether gas for their automobiles, electricity in the house, fuel to heat their homes— and people are throwing fewer things away and recycling more. The use of water also needs to be part of the "using less" concept. All of the major governing boards (American Society of Heating, Refrigerating and Air-Conditioning Engineers, American Society of Plumbing Engineers, Occupational Safety & Health Administration and the hot water (DHW) recirculation, they will experience virtually instant hot water at all their fixtures, while conserving water. What is a hot water recirculation line? It is a pipe that is installed off of the hot water supply line after the furthest fixture in the home and piped back to the water heater. The line is very small, usually 1/2" and has a small bronze circulator installed on this line. The