Air Conditioning - Changing from R-22 to R-410a

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cmiles97
01-03-08, 01:04 PM
When replacing a R-22 split system heat pump with a R-410a HP, can the refrigerant lines be re-used if properly cleaned with Nitrogen?

What are the possible dangers of reusing the existing line set?

Thank you in advance for your answers.

cmiles97
01-03-08, 01:23 PM
I just answered my own question. I found this article, Link:

http://www.contractingbusiness.com/25/Issue/Article/False/77425/Issue

It makes a very strong case for replacement of the line set but goes through what to do if the replacement is near impossible.
mattison
01-03-08, 01:31 PM
Unless it's just impossible you should replace the line set. The article you posted tells it all.