GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Plus Icon Minus Icon Picture icon Hamburger Icon Close Icon Sorted

Community and Q&A

Plumbing question – Domestic Water Heat Reclaimer

QuinnParrott | Posted in Green Products and Materials on

Are these things a good idea? The manufacturer I’ve spoken with is a nice enough guy but I get the feeling I’m buying a used car.

We’ve put them into one house and I want to start putting in more, for customs and spec homes. But is it a good idea?

Thanks in advance.

GBA Prime

Join the leading community of building science experts

Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field.


  1. GBA Editor
    Martin Holladay | | #1

    If you are talking about drainwater heat-recovery devices made of copper (for example, a unit made by GFX, PowerPipe / RenewAbility, or WaterCycles), they work very well. Such devices make a lot of sense if the occupants prefer showers to baths. For families that prefer baths to showers, however, they won't really do much.

    Here are some links for more information:
    Drain-Water Heat Recovery Saves Energy

    Power-Pipe Drainwater Heat Recovery

    ECO-GFX Drain Water Heat Recovery Units

  2. propeller | | #2

    Here's a summary of an independent research that the Canadian government agency did on the product. and here's a saving calculator that may be handy if you live nearby a canadian city. Marc

  3. QuinnParrott | | #3

    Very nice - thank you very much.

Log in or create an account to post an answer.


Recent Questions and Replies

  • |
  • |
  • |
  • |