GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter X 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

On-demand hot water recirculation system

bradrh | Posted in Mechanicals on

One of the criticisms I’ve read for the on demand HW recirc system is that they take too long to get hot water. Never having used one of these I’m wonder what is too long? I’m looking at the readytemp TL4000 which has a taco model 008 pump and my quick estimate is about 35 sec. That seems reasonable to me.
The TL4000D is $435 for pump and controls. Any other suggested alternates? This is for new construction.

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.

Related Questions

Replies

  1. GBA Editor
    Martin Holladay | | #1

    Brad,
    The on-demand pump will greatly lower the wait time -- from unacceptably long to acceptable.

    Here is a link to an article on this topic: Hot Water Circulation Loops.

  2. Jon_R | | #2

    If you want fast, the TacoGenie 0011. Or a point of use heater for ~3 second response.

Log in or create an account to post an answer.

Community

Recent Questions and Replies

  • |

  • |

  • |

  • |
View More Ask a Question

Featured Blogs

Musings of an Energy Nerd View More

Contemplating residential energy use

Product Guide View More

Double Check

Do you really want to delete the list, ?

Note

This won't delete the articles you've saved, just the list.

This feature has been temporarily disabled during the beta site preview.

You must be a magazine subscriber to access this feature.

Subscribe today and save up to 44%

Subscribe

Or learn more

Already a subscriber?