Jacuzzi vs Master Spas swim spas

Jacuzzi uses jets in 10 models (Flow Series, PowerActive Collection, PowerPlay Collection and PowerPro Collection). Master Spas uses a propeller in 2 models (Michael Phelps Signature Swim Spas) and jets in 13 (H2X Challenger Series, H2X Therapool Series and H2X Trainer Series).

A propeller turns behind a grate and pushes one wide column of water. Jets fire water through a few nozzles, often with air mixed in, so the current is narrower and more broken up. What you feel is the width and steadiness of the water, not the horsepower on the spec sheet. The guide to swim spa jets vs propeller explains the trade-offs.

Jacuzzi publishes the open swim area for all 10 models; the longest is 148 in, on the J-19 PowerPro. Master Spas publishes outside dimensions only, so ask the dealer how long the open water is.

Outside lengths run 12 ft 4 in to 18 ft 5 in for Jacuzzi and 11 ft to 21 ft 5 in for Master Spas. By length class, Jacuzzi has 2 in the 12-foot class, 4 in the 14-foot class and 4 in the 16-foot class; Master Spas has 4 in the 12-foot class, 4 in the 14-foot class and 7 in the 16-foot class. At the dealer, lie out in an empty display of the model you would buy, arms overhead: your feet shouldn't reach the seats. See swim spa sizes, 12-foot swim spas, 14-foot swim spas and 16-foot swim spas, and best swim spas for lap swimming.

Water held runs 1,345 to 2,432 gallons for Jacuzzi and 925 to 2,445 for Master Spas. More water means more to heat, treat and carry: have a builder or engineer check the pad or deck for the filled weight.

Jacuzzi's models call for 50 to 110 A in total on 1 to 2 circuits; Master Spas' call for 50 to 130 A on 1 to 3 circuits. The top of each range is the J-19DT PowerPro and the MP Momentum D. A licensed electrician sizes the circuits for the model you buy. See swim spa electrical requirements.

Only Master Spas has filings we could match: its 7 filed models draw a median 306 W, about 223 kWh a month holding temperature. None of Jacuzzi's 10 models matched a California filing, so ask the dealer for the model's listing before you compare. The swim spa running cost guide explains the test.

Jacuzzi's structure warranty runs 10 years, equipment 5 years; coverage does not transfer. Master Spas' structure warranty runs 7 to 10 years, equipment 3 to 5 years; coverage does not transfer. Read the warranty card for labor and the swim system itself, which some makers cover for less time than the shell.

Master Spas reported prices run from $25,499 to $54,499 (September 2026). Jacuzzi doesn't post prices, so a dealer's quote is the only figure. Swim spa cost covers delivery, the pad and the electrician.

Jacuzzi belongs to Investindustrial, the same owner as Sundance and Dimension One. Master Spas is privately held. Where each builds its swim spas, and who services them:

• Jacuzzi. Sold and serviced through Jacuzzi dealers; Jacuzzi says only 'North America and elsewhere', and its swim spa paperwork carries Hydropool's name and Mississauga address.
• Master Spas. Built in Fort Wayne, Indiana with U.S. and imported parts and sold through dealers; warranty service starts with the dealer who sold it, and whether that dealer has its own technicians and parts on hand isn't published.

Every swim spa we track is listed by brand: Jacuzzi swim spas and Master Spas swim spas. Weighing one against a hot tub? Read swim spa vs hot tub, and for picks across brands, best swim spas.