The Turbo-Tech, titanium heat exchanger utilizes rifled titanium, in a coaxial, or “tube in tube” configuration. The rifled titanium tubing inside the GulfStream’s heat exchanger swirls the water and refrigerant efficiently. The expanded surface area of the rifled titanium maximizes its contact with the refrigerant and water, providing heat transfer at a greater rate. And since it’s titanium it will never corrode or wear out. The results are more heat for less money . . . making GulfStream the most efficient pool heat pump in the world.