In designing an indoor pool, our first step is to discuss the pool-use program with the client family. Then we examine how the program might determine the structure's material make-up and heating plan. Some clients are interested in swimming as a fairly serious form of exercise or athletic training. Their building program requires very little extra living or traffic space around the perimeter of the pool, a typically smaller structure, a simpler heating and dehumidification system, and the requisite pool cover. This type of client generally lets the building float through temperature extremes, and tends to keep the water temperature lower (65° to 75°F). The overall effect is lower heat loss, lower evaporation and humiditycontrol requirements, and subsequently lower energy costs (see "Staying
