Dreammaker spas cost less to run than the competition. How do they do it? With smart energy-saving design. The quad energy system consists of four parts designed around generating and retaining heat. The first aspect is the insulation; an inset cover creates a seal that prevents heat escaping as steam, while the spa itself is surrounded with heat-retaining Roxul Green Guard insulation. The other three aspects of the Quad Energy System relate to generating heat; a friction heater and heat return capture energy generated passively by the movement of the pumps, while a traditional electric heater reduces the amount of time the pumps need to circulate while heating.