Are all hot tubs Jacuzzis and v.v.?

Are all hot tubs Jacuzzis and v.v.?

Air-jetted tub versus one with water jets. With an air jet, after you’re done bathing you can drain and then turn the jets back on to dry the tub. With the water jets, you don’t have that option and as much as a cup of water can get left in its PVC pipes and may grow bacteria.