Great item, works well using 115 VAC no need to upgrade to 220 VAC. It took a little work to determine the correct replacement filters, but they are common and not expensive. I also purchased the matching storage step. 
It weighs only  300 pounds empty so it's easy enough to slide to a new position if you reorganize your outdoor space.
It is also fairly quiet, you can have a pleasant conversation while soaking with the need to shout. the only downside is the lounge seat (5th) is a tad short for me at 6'4". But I still get a great feeling from the jets.