We’ve written quite a bit about the various air conditioning systems available for purchase at Total Home Supply, including a guide to understanding BTU ratings, understanding energy efficiency and SEER/EER ratings, how to select the right multi-zone mini split system for your home, and a roundup of our favorite 2016 AC units. In addition to offering high-quality cooling products, we also carry a selection of air conditioner parts & accessories to aid in both installation and system repair. Some common questions we receive from customers have to do with AC line sets for ductless mini-splits; specifically, which line set do I need? And how do I choose the right one? The answer is easier than you think.