Abstract
As the world population continues to increase and countries modernize, the volume of available natural sources decreases as a result. Therefore, seeking for renewable resources in our era is inevitable. Until complete energy sustainability is reached, technologies must keep improving to be more energy efficient. Spas, which have become a common luxury appliance in California, are regulated by the standards established in the California Energy Commission’s California code of regulations: Tittle 20. On average a common portable electric spa consumes 2,514 kW/hr.per year, which makes it the appliance with the biggest electrical consumption. The goal of this thesis is to emphasis the importance of insulation in a heat generation appliance and how it affects its rate of heat loss. The results of this thesis show that the primary source of heat loss in a spa are the floor section which have the lowest value of thermal resistance. The secondary source of heat loss is the spa cover, which is typically the most common and practical way to improve the spa’s efficiency. Lastly, the least amount of heat gets loss by the walls, which is the result of having the highest thermal resistance. The superior the insulation is, the more efficient the spa is.