Water falling down a vertical drain pipe does not run down the middle, but instead clings to the inside wall of the pipe. In a Drain Water Heat Recovery (DWHR) application, falling drain water forms a thin film that easily imparts its heat to the colder pipe wall. The Power-Pipe® "recycles" by using it to raise the temperature of incoming cold water.

A 60-inch Power-Pipe System, for example, can raise the cold water temperature from 10°C (50°F) to as much as 24°C (75°F), under equal flow at 2.5 gpm.

Because the incoming cold water is preheated before going into the water heater and plumbing fixtures, the water heater uses less energy to heat the water and it also increases the effective water heater capacity.

Under our UL Listing program, most Power-Pipe DWHR units are performance tested and labelled according to CSA B55.1 testing protocol and all Power-Pipes comply with CSA B55.2 for Safety and Quality Control. The Power-Pipe is also approved by NSF/ANSI 371 and The UK's WRAS program.

Read more about the Power-Pipe here.