Do I Need To Remove Refrigerant If I Cut My Line Set? - Ask the Expert Episode 168

For whatever reason, you may learn you don't need as much line set as you have for your AC unit, so you want to cut the extra line. So, do you need to remove the refrigerant?

Video Script:

Today's question comes from Tony. "Hey Dan, I had to cut my line set to nine feet. Is the unit going to be okay as it is, or do I need to remove the refrigerant?"

In this situation, Tony has a mini split and he's running a line set for it and he wants to know if he has to remove refrigerant from the pre-charged condenser since he had to cut his line down.

When the manufacturer gets you a condenser, it's going to be charged for a certain amount of line length. The answer is sometimes, yes. You want the right amount of refrigerant. It's like the Goldilocks rule.

Have more questions? Just ask them in the comments below or on Facebook or on Twitter. 

3 comments (view/add)
  • Gabriel Gagnon
    Gabriel Gagnon
    Posted on 11/18/2019

    Some Senville units have a reservoir within the compressor to contain any extra refrigerant from the precharge, so even if your lineset is shorter than the precharge is meant for, you don't need to deal with removing refrigerant. 10ft is the shortest line length approved by Senville.
    An added advantage of said reservoir is that it will be able to compensate refrigerant loss in case of a minor leak.

  • William
    William
    Posted on 5/17/2020

    When removing my Mini split to repair sheet rock behind it I have to disconnect the line set.. When doing so cool and sprays out is there something I need to do to not damage it when taking it out so I can just put it back in?

  • Kyle
    Kyle from Ingrams
    Posted on 5/18/2020

    A conventional mini-split should not be moved or the lines disconnected without first removing the refrigerant from the lines to ensure you do not release any into the atmosphere. If you're attempting to disconnect a MrCool DIY, refer to the installation manual. Basically, you need to run the installation process backwards and close all the valves properly before disconnecting any lines.


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