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I had a soft tub 220 when I lived in a condo and I loved it. It had five jets and you could switch between 3 types of jets. Strait, spinners and a handheld jet When I hear people talk about energy cost on a soft tub being a concern, thats when I know that they have no idea how it works. There is no heater. They use a heat excange system that cost less than $10.00 a month for me in S. California (home of the highest energy cost this side of the mississippi). The real down side to a softub is that it only comes with one 20sq.' filter. But for $30.00 you can double the filteration and go to their "no bypass filteration system". It's not needed, but you have that option.Keep in mind, I don't sell softubs!Good luck.
The heat exchanger is stailess steel coils wrapped tightly around the motor. When the spa is in a heating mode water passes through the coils and takes the waste heat from the motor and returns it to the tub. When the tub is not heating the heat exchanger closes so the water is not heated continually only has needed.Very energy efficient. In S. Fla a Softub will cost you less than $5.00 per month to operate on average.