- Heater: EnergyPro® 4,000 W
- Electrical: 230 V / 50 amp (GFCI sub-panel included)
- Water Care: FreshWater® IQ Ready
- Monthly Pricing: Starting at $200.20/month*
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The Kauai® is a three-person hot tub from the Paradise® Series, the mid-tier hydrotherapy line manufactured by Caldera Spas, a Watkins Wellness brand. Measuring 7' × 5'5" and holding 230 gallons of water, the Kauai pairs a full-body UltraMassage® lounge with two upright seats, 31 jets across three configurations, and a salt-water-ready FreshWater® IQ-ready sanitization system. It is the smallest hydrotherapy spa in the Paradise lineup, the right pick when downsizing, and a sensible entry point for couples or small households who want Paradise-tier materials in a compact footprint. The Kauai is sold and serviced through Seven Seas Pools & Spas.
3 adults (1 lounger, 2 seats)
7' × 5'5" × 29.5" tall (213 × 165 × 75 cm)
31 total across 3 configurations
1 ReliaFlo® Single-Speed 2.0 HP (4.0 BHP) plus an EnergyPro® circulation pump
The Kauai fits couples, empty-nesters, or small households where two or three people share the spa, and where space, weight, or water volume matter. Its lounger plus two upright seats give every soaker a distinct hydrotherapy seat, and the Hot Tub Circuit Therapy® sequence turns moving from seat to seat into a five-station circuit through neck, back, calves, and feet. The Kauai is the right pick if you're downsizing from a larger spa or moving into a smaller home, same Paradise-tier hydrotherapy quality at the smallest Paradise footprint.
Explore the Kauai with Seven Seas Pools & Spas and compare the seating, massage, and water-care features in person.
Parchment
Ash
Java
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| Spa Specification | Value |
|---|---|
| Seating capacity | 3 adults (1 lounger, 2 seats) |
| Length × Width × Height | 7' × 5'5" × 29.5" (213 × 165 × 75 cm) |
| Water capacity | 230 gallons (875 liters) |
| Weight (dry) | 740 lbs (335 kg) |
| Weight (filled) | 3,185 lbs (1,450 kg) |
The Kauai uses a single ReliaFlo® 2.0 HP single-speed pump (4.0 BHP) plus an EnergyPro® circulation pump that runs continuously for low-noise filtration. The 31 jets split across three configurations:
| Jet Type | Count | Targeted Area |
|---|---|---|
| Euro jets | 24 | General muscle coverage across all seats |
| VersaSsage® | 5 | Variable-pattern back massage |
| Euro-Pulse® | 2 | Pulsing back massage |
The Kauai ships FreshWater® IQ Ready, the system takes the guesswork out of water care with smart alerts, step-by-step instructions, and precision dosing. The salt-water system uses a disposable titanium cartridge to generate chlorine from salt, sustaining clean water without ongoing chemical dosing.
| Water Care Specification | Value |
|---|---|
| Standard system | FreshWater® IQ Ready |
| Filter | 50 sq. ft. |
| Ozone | Optional Corona Discharge ozonator |
| Note | Ozone is not compatible with FreshWater IQ, choose one |
| Cover & Accessory Specification | Value |
|---|---|
| Cover | WeatherPro™ 4" tapered core with hinge seal |
| Cover colors | Storm, Chestnut, Black |
| Cover lifters (optional) | ProLift®, ProLift® II, ProLift® III, ProLift® IV |
| Steps (optional) | Paradise® Series Steps or Polymer Steps in Java, Ash, or Parchment |
| Bottom seal | Poly Sheet |
| Cabinet branding | Branding decal on cabinet |
The Kauai is designed around Hot Tub Circuit Therapy®, Caldera's term for moving seat-to-seat across a planned sequence so each muscle group gets a dedicated treatment. On the Kauai, the circuit runs through five stations targeting the neck, back, calves, and feet. A typical circuit starts in the UltraMassage® Lounge for full-body relaxation (neck, shoulders, full back, calves, and feet engaged simultaneously by the Sole Soothers® and Angled Calf Jets), moves to the EcstaSeat® for large-muscle back work plus targeted wrist jets, and finishes in the LumbarSsage® Seat for lower-back tension. The Foot Ridge® anchors you in place so you can lean into the higher-pressure jets without drifting.
Because the Kauai uses a single dual-purpose pump (no second jet pump) and lacks the Euphoria® thigh-and-knee jets found on larger Paradise models, soaks emphasize back, neck, and feet over deep thigh massage. If you want Euphoria® jets should compare the Martinique® or step up to the Makena®, Reunion®, Salina®, or Seychelles®.
Review the dimensions, seating layout, and water-care features with a Seven Seas advisor.
| Related Spa | Seats | Jets | Key Differentiator |
|---|---|---|---|
| Kauai® (this model) | 3 | 31 | Smallest Paradise, lounger + 2 seats, ideal for downsizing |
| Martinique® | 5 | 34 | Roomy lounger, expanded leg space |
| Makena® | 6 | 46 | Lounger + 5 seats, Euphoria® jet |
| Seychelles® | 6 | 43 | Lounger + 5 seats, Acquarella® waterfall |
| Reunion® | 7 | 38 | Open seating, no lounger |
| Salina® | 7 | 40 | Largest Paradise, open seating |
The Paradise Series sits in the middle of the Caldera Spas lineup. From most to least premium:
Utopia® Series, premium top tier (EcoTech® Plus cabinet, FreshWater® IQ Salt, Atlas® Neck Massage, SpaGlo® Multi-Zone LED). Models include the Geneva® and Cantabria®.
View Utopia Series Hot Tubs
Paradise® Series, mid tier (FreshWater® IQ Ready, EcoTech® cabinet, multiple seat-massage technologies). The Kauai lives here.
View Paradise Series Hot Tubs
Vacanza® Series, value-mid (FreshWater® Salt System Ready, EcoTech® cabinet, Mystique® LED).
View Vacanza Series Hot Tubs
Fantasy Series, entry tier (115 V plug-and-play options, FROG® sanitization, rotomolded cabinet).
View Fantasy Series Hot TubsIf you're cross-shopping Caldera against the Hot Spring brand (also distributed by Watkins Wellness), the Caldera vs Hot Spring comparison covers how the two lines split on jet technology, control systems, and water-care defaults.
The Kauai is part of the lineup carried by Seven Seas Pools & Spas. Call ahead or stop by your local showroom to confirm current showroom availability. Visiting a showroom is the fastest way to test the lounger ergonomics, feel the jet pressure, and see the cabinet finishes on the models currently on display. Call or visit your local Seven Seas Pools & Spas location to schedule a private wet-test soak appointment with the models currently on the floor.
The Kauai requires a 230 V / 50 amp circuit wired to a GFCI sub-panel, the sub-panel is included with the spa. Site requirements:
Level reinforced concrete pad, deck capable of supporting 3,185 lbs filled, or a prepared spa pad
24" minimum service clearance on at least one side for equipment access
Standard delivery to ground-level installations
The Kauai's compact 7' × 5'5" footprint and 3,185 lb filled weight make it one of the more flexible Paradise installs, it fits on smaller decks and condo patios where larger Paradise models would not. Seven Seas offers full delivery and installation service including site assessment, electrical coordination with a licensed electrician, and post-fill water balancing.
With FreshWater® IQ Ready, week-to-week maintenance reduces to monitoring smart alerts in the Caldera Spas App and replacing the salt cartridge when prompted. Filter cleaning runs on the standard monthly cadence for a 50 sq. ft. cartridge, see the filter care guide in the owners area.
For broader guidance, the salt-water hot tub care guide in the owners area covers cartridge replacement, ozone interaction (note: ozone is not compatible with FreshWater IQ), and seasonal draining intervals.
Yes, the Kauai is built as a downsizing-friendly spa for two to three people. The lounger gives one soaker a full-body recline while two upright seats handle a partner and a third guest. For households of four or more, the Martinique® (5 adults) or Makena® (6 adults) are better fits.
The Paradise Series is engineered for low operating cost via FiberCor® insulation, the EnergyPro® heater, and a continuous-run circulation pump. Actual monthly electrical cost depends on local utility rates, ambient temperature, and use frequency. The CEC certification means the Kauai meets California's strict energy standards, which is a useful proxy for efficiency if you live elsewhere. Ask a Seven Seas advisor for an operating-cost estimate based on your climate and electricity rate.
No. The Kauai is hardwired 230 V / 50 amp only. For 115 V plug-and-play hot tubs, see the Fantasy Series models.
FreshWater® IQ Ready means the spa is engineered for Caldera's salt-water sanitization system, salt-generated chlorine plus smart monitoring through the Caldera Spas App. Ozone is an optional Corona Discharge ozonator that adds supplemental sanitation. They are not compatible, choose one or the other at the time of purchase.
Yes, a WeatherPro™ 4" tapered core cover with hinge seal is included. UL-listed child-safety locks and ASTM compliance are standard on Caldera covers. Cover lifters (ProLift®, ProLift® II/III/IV) are optional add-ons.
Caldera does not publish a single warranty page on the product page itself. Seven Seas walks every Kauai buyer through the current Caldera warranty document at the time of sale, generally a multi-year shell warranty plus shorter components and labor terms. Ask for the latest warranty PDF when you visit a showroom.
Standard Kauai delivery from Seven Seas runs 4-8 weeks from order, depending on current Caldera Spas production lead times and the shell color you select. Expedited inventory in stock at Seven Seas locations can ship within a week.
Yes, with proper ventilation and drainage. Indoor installations require an electrician-approved 230 V / 50 amp feed, a moisture-resistant floor structure rated for 3,185 lbs, and active humidity ventilation. The Kauai's lower filled weight (vs. larger Paradise models) gives it more indoor placement flexibility. See the indoor installation guide for full requirements.
The Kauai is part of the lineup carried by Seven Seas Pools & Spas. Call ahead or stop by your local showroom to confirm current showroom availability. Visiting a showroom is the fastest way to test the lounger ergonomics, feel the jet pressure, and see the cabinet finishes on the models currently on display. Call or visit your local Seven Seas Pools & Spas location to schedule a private wet-test soak appointment with the models currently on the floor.
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