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Heating, Air Conditioning, Fridge, HVAC/How to best protect outside AC copper pipe from corrosion?

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Question
I have a refrigerant (R410) line running about 3 feet from the outside compressor to a junction box.

Looking at other installed units, the lines are insulated with foam material, but nonetheless, the lines inside are corroded (copper becomes black/green).

Is it advisable to duct tape the lines directly (to avoid air contact), then put the foam material, then tie wraps?

looking to protect the lines from corrosion.

Answer
Marc,
    Very sorry for delay -experts system did not inform me of question pending . There is no harm taping the copper and then insulated . The change of color of the copper is oxidation from being exposed to the air . You can buy foam insulation ( try to get closed cell insulation ) at most hardware stores . Again sorry for the delay.

         http://www.airzero.com     
         
         Marcus  

Heating, Air Conditioning, Fridge, HVAC

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Marcus Cass

Expertise

I can answer question regarding small refrigeration units ,walk in cooler/freezer,commercial ice machines,exhaust hoods,supermarket rack systems,all residential air conditioning units and commercial air conditioning equipment. No appliance questions please

Experience

20 years plus experience in supermarket chains , restaurant refrigeration service , and residential and commercial air conditioning service. Florida class A air conditioning contractor. Currently own an air condition and refrigeration company.

Education/Credentials
Graduated trade school , hundreds of hours of manufacturer training as well as in house training over the years and best of all - hands on real world experience . Class A license holder in Florida

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