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No. There is a small line which ties the small circ pump to various parts of the spas - areas such as the Moto Massage cavity, the filter well, and the jet plumbing. Hop into a HotSpring spa, get settled and then turn on the jets. (Tell them they look especially beautiful in candlelight) - you will feel hot water right from the start. That's one of those engineered feature which doesn't show up in the brochure...