What is the difference between an air jet and a water jet?
Again as with jet count, air and water jet counts can be confusing. Some manufacturers install small air outlets into the spa and count them as jets. They are in fact not jets but air ports intended to add ‘bubbling’ to the spa water. They have no significant value, in as much as they just release air into the water giving the impression of therapeutic value, where in fact they just cool the water. It is another way for a manufacturer to show an increased jet count deliberately misleading the customer. The air jets have no mechanical operating controls and therefore are either on or off. When cool air is drawn in through the small ports of the jet and exhaled into the spa it gives the impression of rigorous jet action when, in fact, it is just cooling air being injected into the spa. In particular ,be aware of spas for sale with literally hundreds of jets, they will probably have a large percentage of air only ports.
