In order to reuse line sets the following must be reviewed: 
1. The diameters of the line set must be adequate for the new appliance.
2. The line set must be Type K or Type L copper in order to withstand the higher pressures of R-410A refrigerant.
3. Brazing materials should be compliant with R-410A. If unknown the line set must be replaced. 
4. The line set must be properly flushed/cleaned of previous refrigerant & oil. 
Desert Aire recommends that a Line Set Analysis be completed prior to the appliance installation to determine if the line set can be reused. In most cases new line sets will be required. Please consult Desert Aire Service for any questions.
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