What is the warranty for this line set?

The line set itself does not have a warranty. However, the units that use these line sets come with multi-year warranties that can be found on the unit pages. For example, an ACiQ mini-split system comes with a 12 year warranty with online registration and AirQuest can have up to a 10 year warranty with online registration. If you have any further questions please feel free to give us a call! Thanks.