BJ Pool & Spa is a dealer for Dimension Spas hot tubs. D1’s interior features are designed to bring you the ultimate in comfort, therapy, and convenience. Sit back in your seat that was based on over 100 measurements of the human body, turn on your jets without having to leave your seat, and enjoy a luxurious hydrotherapy massage that targets the most common aching muscles. D1′s products are engineered to be the most energy efficient spas in the industry. In 1981, D1 Spas was the first company to manufacture a fully insulated spa. D1 hot tubs are insulated with urethane foam, which is used in commercial freezers, and come complete with insulated foam covers precision-fitted with linear heat-seal seams to prevent heat loss. Portable hot tubs account for less than 1 percent of the energy consumed in residential homes. In addition, D1 hot tubs and swim spas use up to 85% less energy than traditional in-ground pools. We also service and repair Pool and Spas through out Northern Virginia, Maryland and parts Of D.C.