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

Point-of-use tankless?

Benjamin Barker | Posted in Green Products and Materials on

Would it be more beneficial to install point of use tankless water heaters instead of a centrally located tankless and then pumping hot water throughout the house? Based on my experience and knowledge it seems more efficient to have the water heater at the point of use so as to eliminate heat loss during distribution.

Benjamin Barker
BPI Building Analyst
RESNET HERS Rater
LEED GA

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.

Replies

  1. David Meiland | | #1

    More efficient? It's not that simple. Yes, you eliminate standby losses, but that's only part of the picture. I'm pretty sure this has been discussed here before, and there may even have been an article on it.

  2. GBA Editor
    Martin Holladay | | #2

    Benjamin,
    Efficiency can be measured many ways. In addition to water heater efficiency, it's important to consider the losses that occur in the distribution system. Gary Klein has done important research in this area. A poorly designed piping system can waste more energy than an inefficient water heater.

    Here's an article to get you started:
    http://www.allianceforwaterefficiency.org/WorkArea/linkit.aspx?LinkIdentifier=id&ItemID=2264

    More information:
    http://www.allianceforwaterefficiency.org/Residential_Hot_Water_Distribution_System_Introduction.aspx?terms=Klein

Log in or create an account to post an answer.

Community

Recent Questions and Replies

  • |
  • |
  • |
  • |