Homeowners may believe that the swim spa requires little maintenance when it is installed inside the home, but because users swim in the spa year round, there is more maintenance required to keep it clean and the water balanced. Spa owners must shock the indoor swim spa more often than an outdoor pool to remove body oils, grease and nitrogen from the spa. Shocking a pool requires owners to add a sanitizing agent such as chlorine to the pool to remove contaminants and microorganisms. An indoor spa or pool may require a shocking process more often because the oxidation process releases the contaminants into the atmosphere of the poolroom, which may fall right back into the pool. Ventilation is an important part of the shocking process. Swim spa owners must run the filter on an indoor pool at least 8 to 12 hours every day and weekly vacuum the pool to keep it clean and ready for exercise.
The weight of a swim spa is a consideration when installing inside the home. Swim spas can weigh over 18,000 lbs. and distribute the weight at about 250 lbs. per square foot. Basements and garages with concrete floors are the ideal location for a swim spa. To install the spa on a second floor, you should have a structural engineer evaluate your home.
While a swim spa does take up less space than a lap pool for exercise, space is a consideration for homeowners. An exercise room for the swim spa is the ideal solution for the space consideration, and homeowners may not have an extra ground floor room or garage to place the spa. Homes without the space may be forced to install the spa outside, and in colder climates this limits the use of the exercise pool.