Semi In-Ground Swim Spas
High-performance swim spas with a cleaner, pool-style installation.
Pool-Style Design with Swim Spa Performance
Semi in-ground swim spas combine strong swim performance with a cleaner, built-in appearance. These models can be recessed into the ground without requiring a concrete foundation, giving you easier access and a look that feels closer to a traditional pool while keeping all the benefits of a swim spa.
Semi In-Ground Swim Spa Models
The models below feature powerful swim systems, adjustable currents, and hydrotherapy options, with layouts designed for both training and everyday enjoyment. Compare each one to see which best matches your fitness needs and backyard design goals.
Amazon W-Flow Swim Spa (Wellis, single zone, 18 ft class, seats 2)
The Amazon W-Flow is a single-zone Wellis swim spa built around a large exercise area and a fully adjustable W-Flow current system with six speed options. It has a two-person layout, 27 total jets, and includes both ozone and UV water sanitation. This model runs on 240V power with Gecko digital controls and is commonly used for swimming, training sessions, and recovery at home.
Amazon Life Grand Prix Swim Spa (Wellis, single zone, seats 2)
The Amazon Life Grand Prix is a single-zone Wellis swim spa designed for swim training with an enhanced W-Flow countercurrent system and six speed options. It features three swim jets, 33 total jets, and a two-seat layout with ozone and UV sanitation. This model includes Scandinavian insulation and runs on 240V power with Gecko digital controls.
Amazon Swim Spa with River Jets (Wellis, single zone, seats 2, 3 river jets)
The Amazon River Jets model is a single-zone Wellis swim spa that uses three river jets to create a strong swim current for workouts and water aerobics. It’s set up with a two-person layout, 25 total jets, and includes both ozone and UV water sanitation. With a 240V system and Gecko digital controls, it’s positioned as a compact backyard alternative for exercise plus relaxed soaking.
Danube W-Flow Swim Spa (Wellis, 14.8 ft, single zone, seats 2, 6 speeds)
The Danube W-Flow is the smallest of the Wellis models listed here, with a 14.8-foot overall length and a 10.3-foot swim area. It uses a W-Flow system with six speed options for structured training sessions and includes two hydrotherapy massage jets for recovery after workouts. This model includes ozone and UV sanitation and runs on 240V power with Gecko controls.
Danube River Jets Swim Spa (Wellis, 14.8 ft, single zone, seats 2, 3 river jets)
The Danube River Jets model pairs a compact 14.8-foot footprint with a three-river jet system designed for swimming and water aerobics. It has a two-person layout, 24 total jets, and includes ozone sanitation with Gecko digital controls on 240V power. With a 10.3-foot swim area, it’s a practical choice when you want swim capability in a smaller space.
Rio Grande W-Flow Swim Spa (Wellis, dual zone, 19.7 ft, seats 5)
The Rio Grande W-Flow is a dual-zone Wellis swim spa that separates the fitness/swim area from a full hot tub section, giving you two distinct spaces in one unit. It features a W-Flow system with six speed options, 41 total jets, and seating for five, with ozone and UV sanitation. This model runs on 240V power with Gecko controls and includes Scandinavian insulation.