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C-621 Catalina 20 Dual-Temp

C-621 Catalina 20 Dual-Temp

An above-ground swim spa with a 4-person spa zone and 57 therapy jets.
ONLINE PRICE

MSRP: $44,099

$28,199
save $15,900
ADDITIONAL COUPON SAVINGS
Save an extra $700-$1,400

Spring Sales Event – Ends 4/28

FINANCE PRICE
MSRP: $44,099

$31,199

save $12,900

In-house financing – 100% approval rate 

60 months – 0% interest*
Spring Sales Event – Ends 4/28
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Manufacturer’s instant rebate & sale coupon are only available to cash/credit card buyers.

  • Above-Ground Swim Spa: An above-ground swim spa with a spa zone and swimming lane.
  • Multi-Layered Fiberglass Reinforcement: Reinforced fiberglass construction provides exceptional strength, durability, and long-term structural integrity.
  • Insulated Cover: Energy-efficient insulated cover helps retain heat and protect the swim spa when not in use.
  • Heat Flow Manifolds: A heat-flow manifold system captures and distributes heat to enhance overall performance.
  • 100% Anti-Fungicide Plumbing: Anti-fungicide tubing helps prevent bacterial buildup in plumbing lines, resulting in cleaner water and reduced chemical demand.
  • User-Friendly System Controls: Intuitive controls make managing temperature and swim functions simple and convenient.
  • ABS Bottom Protection: Durable ABS base shields the swim spa from moisture, pests, and ground contact.
  • Catalina Skirting: Attractive and durable Catalina skirting enhances the exterior appearance while providing long-lasting protection.
  • Integrated Energy Efficient Technology: Advanced energy-saving components maximize performance while minimizing operating costs.
  • Made in the USA: Expertly crafted in the United States with quality materials and trusted workmanship.

Swim Side

  • Three River Jets: Three powerful river jets to help with continuous swimming.
  • Premium Lighting Package: The lighting package includes the following:
    • Underwater, Perimeter, Fountain, Jet & Waterfall Lighting
    • 8 LED Backlit Fountains
    • 8 LED Underwater Lights
    • 6 LED Step Lights
    • 24 LED Perimeter Lights
  • ClearView H-500 Ozonator: A high-performance ozone system that helps maintain cleaner, clearer water with reduced chemical use.
  • 2 Stainless Exercise Rails: Durable stainless steel rails provide support for workouts and stability.
  • Ceramic Swim Lane & Water Line Tile: Premium ceramic tile defines the swim lane and water line with a clean, professional finish.
  • UV Sanitation System: Advanced UV technology enhances water purification, creating healthier water and reducing chemical use.
  • Standing Body Massager: Upright hydrotherapy station delivers targeted full-body massage relief.
  • 100 Sq. Ft. High-Performance Filtration: Large-capacity filtration system ensures superior water clarity and cleanliness.
  • Auxiliary Control Panel: A secondary control panel that provides convenient access to spa functions from multiple locations.

Spa Side

  • 42 Jets: 42 powerful jets for targeted hydrotherapy.
  • Fixed See-Through Divider: Sleek transparent divider separates zones while maintaining an open, connected design.
  • Premium Lighting Package: Advanced LED lighting package includes underwater, perimeter, and fountain lighting for a complete glow effect.
  • Neck, Shoulder, Calf & Foot Jets: Strategically placed jets provide targeted relief to key muscle groups for full-body hydrotherapy.
  • Therapy Seating: Ergonomically designed to maximize the benefits of hydromassage.
  • WiFi Connectivity: Built-in WiFi allows convenient remote monitoring and control of spa settings.
  • UV Sanitation System: Advanced UV technology helps maintain cleaner, clearer water with reduced chemical use.
  • H-100 Ozonator: A high-performance ozone system enhances water purification and clarity.
  • LED Backlit Jets: Backlit jets add to the spa ambiance while delivering therapeutic performance.
  • 2 LED Cabinet Lights on End: Exterior cabinet lighting enhances style and nighttime visibility.
  • Bluetooth Water-Resistant Audio with Built-In Speakers & Subwoofer: Integrated Bluetooth sound system delivers rich, immersive audio while you relax.
  • 100 Sq. Ft. High-Performance Filtration: Large-capacity filtration system ensures superior water clarity and cleanliness.

Upgrades

  • AnyTemp® Hot and Cold Spa System
  • Swim Pole & Harness System
  • (3-Pack) CopPure Filters
  • Swim Spa Steps
  • Spa Booster Seat
  • Spa Startup Chemical Kit
  • (3-Pack) Nature2 Spa Water Purifier
  • Rechargeable Floating Drink Station
  • Fresh Water Mist System
  • Balboa SmartSwim™ (Not available on 4 pump swim spa models)
  • Row Kit – The Row Kit comes with a rowing kit as well as two resistance bands for your arms (2) and legs (2) that attach at the wrist and ankles
Swim Spa Accessories

Discover pioneering swim spa technology

UVSanitationSystem

UV Sanitation System

The advanced UV sanitation system technology helps maintain cleaner, clearer water, reducing chemical demand.
CustomCeramicTile

Custom Ceramic Tile

Choose from a variety of custom ceramic tile options to define the swim lane and waterline,
enhancing the swim spa's design.
MultiZoneSwimSpas

Multi-Zone Swim Spas

Multi-zone layouts provide a personalized wellness experience, with dedicated areas for swimming,
relaxation, and targeted massage.
VariousLightingPackages

Various Lighting Packages

Various lighting packages enhance the aesthetics and ambiance of our swim spas,
offering a personalized experience.

FAQ

Q: Does Whisper Outdoor sell swim spas?

A: Yes. Whisper Outdoor offers a full range of swim spas through the Catalina brand, including the Swim Series, Dual Temp Series, and Pool Series. Swim spas combine the relaxation benefits of a hot tub with the ability to swim in place against a current, making them a year-round exercise and therapy solution that fits in a fraction of the space of a traditional pool.

Q: How much does a swim spa cost at Whisper Outdoor?

A: Swim spas at Whisper Outdoor generally range from approximately $13,000 to $45,000, with most models falling in the $20,000 range. Because LPI sells them factory-direct, prices are significantly lower than comparable swim spas from brands like Endless Pools, Master Spas, or TidalFit. Instant factory rebates and periodic promotional coupons are available to reduce costs further. Financing options include 0% APR for up to 60 months when available as part of current promotions.

Q: What is the most popular swim spa at Whisper Outdoor?

A: The Catalina C-210 Malibu (12.6’ Fitness Series) is the #1 best-selling swim spa. It’s a portable model that delivers a full aquatic workout and hydrotherapy experience in a 12.6-foot footprint — great for buyers who want swim spa benefits without the size and cost of a full dual-temp unit. The Catalina C-420 Marathon 21’ Dual Temp is the #2 best seller — a premium dual-temperature swim spa that features separate spa and swim zones, each with independent temperature controls, built-in chiller capability, and a full suite of luxury features.

Q: What is a dual-temp swim spa?

A: A dual-temperature swim spa has two separate zones — a heated spa side for soaking and hydrotherapy (typically 100–104°F) and a swim/exercise side that can be kept at a cooler temperature for swimming, aquatic fitness, or even chilled for cold plunge therapy. Catalina’s Dual Temp models feature independent controls on each side, allowing you to maintain different temperatures simultaneously. This gives you the benefits of a hot tub, swim spa, and cold plunge all in one unit.

Q: How do Whisper Outdoor swim spas compare to Endless Pools or Master Spas?

A: Whisper Outdoor’s Catalina swim spas are manufactured by one of the largest swim spa producers in the United States and include premium features like touchscreen controls, Balboa SmartSwim™ technology, river jets, UV sanitization, and LED lighting packages. Because they’re sold factory-direct through Whisper Outdoor’s company-owned stores, buyers avoid the dealer markup that drives up prices on Endless Pools, Master Spas, and similar brands. The result is comparable or superior features at a significantly better value.

Frequently asked questions

A swim spa is a long, rectangular spa that combines the swimming benefits of a pool with the hydrotherapy and convenience of a hot tub. A powerful current at one end lets you swim continuously in place — no wall to flip off, no laps to count — while the other end functions as a traditional hot tub with jets and seating. Swim spas are popular because they deliver year-round swimming, fitness, hydrotherapy, and recovery in a fraction of a pool’s footprint and cost.
A swim spa offers most of what a pool does at a fraction of the cost, footprint, and maintenance burden. Pools require excavation, permits, decking, separate heaters, and seasonal opening and closing. A swim spa installs above-ground in a fraction of the time, runs year-round (including in cold climates), uses far less water, and combines swimming, hydrotherapy, and hot tub functions in a single unit. For most homeowners, a swim spa delivers the lifestyle benefits of a pool without the ownership burden.
Whisper Outdoor swim spas typically range from around $15,000 for compact single-zone models to $30,000+ for premium dual-zone units with full swim currents, hydrotherapy seats, and cold-zone capability. Because we manufacture our swim spas in Tennessee and sell factory-direct through our own showrooms, our pricing typically runs significantly below comparably equipped swim spas sold through traditional dealer networks. Most swim spa buyers finance through one of our three financing paths to spread the cost into manageable monthly payments.
Yes — and that’s one of the main reasons people choose swim spas over pools. Swim spas are insulated, heated, and built for year-round use in any climate. The water stays at your preferred temperature 365 days a year, so you can swim, do hydrotherapy, or relax whether it’s 90 degrees or below freezing outside. Many owners report using their swim spa more often in winter than summer.
Swim spas typically range from about 12 feet to 21 feet in length. Shorter models (12–14 ft) are ideal for fitness swimming, hydrotherapy, and households with limited space. Mid-size models (14–17 ft) offer more swim distance and often include separate hot tub seating. Larger dual-zone models (17–19+ ft) feature a dedicated swim zone and a separate hot tub zone, ideal for households who want a complete wellness solution.
Every Whisper Outdoor swim spa is designed and manufactured in Tennessee, USA — in the same facilities where we build our hot tubs, golf carts, and UTVs. American materials, American labor, and direct factory oversight on every unit. Building in-house gives us complete control over quality and means warranty service goes directly through the manufacturer, not a third-party dealer.
Swim spa delivery is more involved than a hot tub but far simpler than building a pool. Most swim spas install above-ground on a level concrete pad, deck, or properly prepared base — no excavation required. Our team coordinates delivery directly to your home, and your local Whisper Outdoor showroom can help connect you with installation resources in your area. A licensed electrician will be needed for the 220V hookup; the rest is typically straightforward.
Because swim spas are a larger purchase, our extended financing terms make a meaningful difference. We offer three financing paths: in-house financing with a 100% approval rate and terms up to 84 months — meaningful for higher-ticket purchases — plus third-party financing through Wells Fargo and promotional 0% APR offers when available. Most applicants receive a decision within 1 business day of applying online.

Exclusive savings awaits

Save up to $3,000 on swim spas during our
May Clearance Event
Ends 5/31

Special financing for all credit types — low monthly payments, easy approvals. Get your personalized savings sent straight to your inbox.

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Resort-level wellness, factory-direct pricing.

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Exclusive savings awaits

Save up to $5,000 during our
May Clearance Event
Ends 5/31
Special financing for all credit types — low monthly payments, easy approvals. Get your personalized savings sent straight to your inbox.

Get your exclusive Savings

A few seconds – and your exclusive savings are on the way.

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