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

Are minisplit refrigerant lines better in a wall or outside?

Michael Prisco | Posted in Mechanicals on

Will the heating efficiency of a mini split operating in a cold climate be effected by whether the refrigerant lines are run inside the walls and kept warmer vs running them down a chase on the outside?

Thanks,
Mike

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. GBA Editor
    Martin Holladay | | #1

    Mike,
    Wherever they are located, refrigerant lines need to be insulated.

    It stands to reason that if refrigerant lines can be installed inside a home's thermal envelope, there will be a slight performance improvement compared to refrigerant lines installed outside a home's thermal envelope.

    My guess is that the difference in performance or efficiency will be slight, however.

  2. Expert Member
    Dana Dorsett | | #2

    The difference in efficiency is "in the noise", statistically speaking. With an exterior conduit it's easier to service, and there is less likelihood of pounding a nail or drilling through when hanging things on the wall later.

    In new construction routing them in an interior chase (and not stud cavities) would be the best choice.

Log in or create an account to post an answer.

Community

Recent Questions and Replies

  • |
  • |
  • |
  • |