Master Spas
Last updated: August 2026
Visit WebsiteWhat Sets Master Spas Apart
• Large variety
• Saltwater compatible
• Michael Phelps endorsement
• Made in the USA
• Powerful jet performance
Company & Manufacturing
Who makes Master Spas and where they're built.
Owned by
IndependentManufacturer
Master SpasMade in
USA (Fort Wayne, IN)Manufacturing
In-houseCountry of origin
🇺🇸United StatesNotes
Founded 1996. Privately held. World's largest swim spa manufacturer. 50-acre campus / 650K sq ft. Brands: Twilight, Clarity, Michael Phelps Legend, H2X.
Master Spas Models (15)
Michael Phelps Momentum Deep
4 seats
Price not yet available
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Michael Phelps Signature Pro
3 seats
Price not yet available
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Therapool D
6 seats
Price not yet available
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Therapool SE
6 seats
Price not yet available
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Trainer 12
3 seats
Price not yet available
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Trainer 15
5 seats
Price not yet available
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Trainer 21
8 seats
Price not yet available
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Master Spas Guides & Reviews
Best Swim Spas for Fitness Training
Not all swim spas are built for athletic training. We highlight the models with the strongest, smoothest currents and the best exercise accessories for a full-body workout.
Read more
Swim Spa Buying Guide: What to Know Before You Buy
Buying a swim spa is a significant investment. This guide covers size, propulsion systems, installation requirements, and budget considerations to help you choose with confidence.
Read more
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