In our offer we have three sizes of dual line set in pipe diameter 5/8″, 3/4″ or 1″. Lineset diameter depends on a size of the whole installation (number of collector or banks). For small domestic systems usually we are using 5/8″ that it is the best solutions for this type. For larger system 3/4″ or 1″ diameter will be better to optimize the whole system. If you want to choose the right size, you can contact the engineering team. they will definitely help you to make a right decision.
How To Choose The Right Size Of Solar Lineset ?Dawid P