Rifled Air Conditioning Systems takes pride in its reputation as an industry leader in new product development and innovation. Before rifled tubing was developed, to make an air conditioner perform more efficiently, engineers were routinely obliged to add more heat exchanger surface to their designs. But now thanks to the remarkably improved heat transfer characteristics of rifled tubing, our engineers can create much more efficient air conditioning units without increasing their actual size. Rifled Air's Tube Coiled Technology