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

Extra insulation on outdoor refrigerant lines for minisplit?

Dan Moore | Posted in General Questions on

I have a multi mini-split that has three indoor heads. For two of these, there is a 20/30 foot section of refrigerant piping that is outside and under a deck. No lineset plastic covering was put on it because it isn’t visible. It is insulated with what I believe is the standard insulation that Mitsubishi uses and I think the installers did a decent job with it. It doesn’t seem like a lot of insulation so I was thinking of wrapping it further but can’t find much information on if it is worthwhile, and if there is a standard product for this or just find something that works? Any thoughts on if anyone has done this and what they used would be appreciated. 

A couple of pictures are attached to show the piping insulation. The pictures are from the crawlspace just because it was easier to take at the time.

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. Walter Ahlgrim | | #1

    Feel free to add insulation to the lines if it make you feel better but understand it will have a tiny affect if any on system performance.

    The lines are mostly insulated to prevent water damage the copper will often be cooler than the dew point of the air around it and will condense water on the pipe this water will the low spots on the pipe and drip off making a mess. The insulation is to limit the cold surface area and the amount of water generated.

    Walta

    1. Dan Moore | | #2

      Good to know, thanks!

Log in or create an account to post an answer.

Community

Recent Questions and Replies

  • |
  • |
  • |
  • |