Find out if jet pressure can be regulated. Most spa users prefer to adjust jet pressure for their own pleasure seeking relaxation. For example, the Hot Spring spa line features the unique Moto-Massage jets that sweep up and down the length of your back at a speed you control, providing an invigorating underwater massage. Hear the silence. A spa you'll want to live with has no audible noise when the water is circulating, heating and filtering.
Simplicity is best.
Make sure you know how to operate the spa. Look for an energy efficient spa that's hot all the time. Having a spa that is ready NOW means that you will use it more often for all the reasons you bought it in the first place. Check the filtration. Select a spa with locking cover and locking control panel to keep out small children.