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Old 11-05-2015, 11:07 AM   #5790
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Join Date: Nov 2002
Posts: 5,431
To ipaq4444,
If to choose 1 pipe out of 2 to be insulated, I will choose to insulate the return pipe to 1/2.
Discharge pipe can remain at 3/8.

Hi Terumo,

Thank you so much for responding! if i am to do this, will there be a very higher chance of condensation? like 20 - 30% more or only slight 5% more?

from experience, if all the pipe for a system 4 is based on 1/2 inch insulation can it fitted into a 3x 4 trunking?
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