Hydropool vs Master Spas swim spas

Hydropool uses jets in 9 models (Aquatic Collection, Executive Collection and Play 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.

Hydropool publishes the open swim area for all 9 models; the longest is 153 in, on the AquaTrainer 17AX. Master Spas publishes outside dimensions only, so ask the dealer how long the open water is.

Outside lengths run 12 ft 6 in to 18 ft 10 in for Hydropool and 11 ft to 21 ft 5 in for Master Spas. By length class, Hydropool has 1 in the 12-foot class, 3 in the 14-foot class and 5 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 2,409 gallons for Hydropool 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.

Hydropool's models call for 50 to 100 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 AquaTrainer 19DTAX 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 Hydropool's 9 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.

Hydropool's structure warranty runs 10 years, equipment 3 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). Hydropool doesn't post prices, so a dealer's quote is the only figure. Swim spa cost covers delivery, the pad and the electrician.

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

• Hydropool. Built in Mississauga, Ontario, and serviced by the selling retailer; Hydropool's site lists 178 US retailer locations across 41 states.
• 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: Hydropool 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.