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Tape on Air Conditioning Outside Lines?

SethFrankel's picture

On a recently installed mini-split system the contractor left the outside condenser lines with the black insulation exposed and not taped. I've seen installations taped and not taped.

I would think that the elements would quickly degrade the black foam insulation. Is taping recommended? If so, what kind of tape is used for this application?

UV rays will deteriorate the (post #206585, reply #1 of 4)

UV rays will deteriorate the foam in a few years.

Wrapping or taping will shield the insulation. Big box stores will have various products that can be used.

Don't use electrical tape or (post #206585, reply #2 of 4)

Don't use electrical tape or duct tape.


Of all the preposterous assumptions of humanity over humanity, nothing exceeds most of the criticisms made on the habits of the poor by the well-housed, well-warmed, and well-fed.  --Herman Melville

I'd say that the foam is (post #206585, reply #3 of 4)

I'd say that the foam is important for conserving energy. The guys who installed our system (2005) used some sort of black foam that hasn't suffered any UV damage yet, and it's not covered with tape.

Ask what foam it is. (post #206585, reply #4 of 4)

Some of the foam insulators, particularly ones made for the purpose, are perfectly fine in the sun. 

I have a building where the insulation has been exposed since 2001, with no discernable deterioration. 

It is secured with nylon wire ties, and some of them have broken down, and been replaced.  But the foam goes on.