Just as important are the controls. Choose a model that's user-friendly. You'll also want a spa that provides easy access to the filter system. In addition, Beals suggests taking a hard look at how the spa is insulated. Some manufacturers fully seal the insulation around their spas, which can make them hard to service.
Some retailers offer an insulating blanket instead.
Although today's hot tubs require less maintenance than in the past, they do require regular upkeep. As with a swimming pool, you'll still have to check the pH level at least once a week. And you'll have to sanitize the water with bromine or biguanides every 10 to 14 days to remove bacteria. Hot tub owners should also clean the filter once a month, occasionally wipe down the skirting with a sponge and periodically drain and refill the spa. Retailers suggest doing it once every three to six months.