Insulating copper pipes for a heat pump that run in an exterior wall.
Hi gang. I've been installing mini-split heat pumps lately, all as retrofits until now. My latest install is in a new build and I've had to run the insulated copper pipes inside an exterior wall. My concern is condensation on these pipes when the unit is used for cooling. My plan is to insulate the back of the cavity with 1.5" xps, seal the edges and all penetrations into the cavity with spray foam, and then finish insulating with batt. They're using poly for an air barrier behind the wall finish. What do you think? Should I put xps on the sides of the cavity as well? Many thanks for your thoughts.
Also, this is in BC's mild marine climate.
Posted Fri, 12/20/2013 - 14:18
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