Arctic Spas Perimeter Heatlock Insulation System is designed to minimize heat loss and maximize energy efficiency. When the spa shell is placed into the cabinet, high density insulating urethane foam is applied to the floor, cabinet walls, doors and spa rim underside. This creates a sealed dead air space similar to that found in most houses in the northern parts of the United States and Canada.

Unlike most spas, Arctic Spas' heater and pumps are housed inside the insulated area to maximize energy effciency, shield against mechanical noise and protect equipment from freezing. Incidental or waste heat from the motors and heater is trapped by the insulation and naturally transfers through the spa shell to contribute to heating the water, significantly reducing overall heating cost.

The captured heat also acts as protection against sub-zero temperatures and protects plumbing and equipment from freeze up. Even without power, at temperatures of minus 40, your spa water will stay above freezing for many days.

The sophisticated engineering of our Heatlock System provides an ideal operating environment for our pump motors. The water vessel acts as a heat sink, pulling heat away from the motor and other equipment. This greatly increases motor life and virtually eliminates the overheating problems experienced by other spas brands.