Wellis Danube W-Flow Swim Spa — 2-person hydro outdoor swim spa
Wellis Danube W-Flow Swim Spa — 2-person hydro outdoor swim spa (view 2)
Wellis Danube W-Flow Swim Spa — 2-person hydro outdoor swim spa (view 3)
Wellis Danube W-Flow Swim Spa — 2-person hydro Outdoor — view 4
Wellis Danube W-Flow Swim Spa — 2-person hydro Outdoor — view 5
Wellis Danube W-Flow Swim Spa — 2-person hydro Outdoor — view 6
Wellis Danube W-Flow Swim Spa — 2-person hydro Outdoor — view 7
Wellis Danube W-Flow Swim Spa — 2-person hydro outdoor swim spa
Wellis Danube W-Flow Swim Spa — 2-person hydro outdoor swim spa (view 2)
Wellis Danube W-Flow Swim Spa — 2-person hydro outdoor swim spa (view 3)
Wellis Danube W-Flow Swim Spa — 2-person hydro Outdoor — view 4
Wellis Danube W-Flow Swim Spa — 2-person hydro Outdoor — view 5
Wellis Danube W-Flow Swim Spa — 2-person hydro Outdoor — view 6
Wellis Danube W-Flow Swim Spa — 2-person hydro Outdoor — view 7

Wellis Danube W-Flow Swim Spa — 2-person hydro Outdoor | TwoRelax

€35,290.00
Incl. VAT

Compact 4.5 m swim spa with three-pump W-Flow current. AquaSoul™ Pro 4.1 sound, WiFi-enabled remote control.

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Wellis Danube W-Flow Swim Spa — 2-person hydro Outdoor | TwoRelax—
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The Danube W-Flow is a compact yet powerful swim spa designed for users who want a strong, continuous swim current in a slightly smaller footprint. Combining performance and premium features, it delivers an ideal balance of fitness and relaxation.

With its open swim area and high-powered flow system, the Danube W-Flow is perfect for active swimming, training, and everyday wellness.


Powerful Swim Performance

At the heart of the Danube W-Flow is a robust counter-current system designed for smooth and consistent swimming.

  • 3 × 3 HP swim pumps for strong resistance
  • Dedicated hydromassage pump with W-EC circulation pump
  • Wide, even current for a natural swimming experience

This setup is ideal for fitness users and regular swim training at home.


Compact Open Swim Design

Despite its reduced length compared to larger swim spas, the Danube maximises usable space:

  • Large open swim zone
  • 2 integrated seats for relaxation
  • Ideal for swimming, stretching, and light hydrotherapy


Premium Construction

Built with durability and efficiency in mind, the Danube W-Flow features:

  • Stainless steel frame
  • Fiberglass-reinforced shell
  • HorizontSide™ cabinet or semi-inground installation option
  • Scandinavian insulation for improved energy efficiency


Advanced Features & Comfort

The W-Flow edition includes high-end features for a complete spa experience:

  • SmartTouch control panel
  • WellisGuard™ water care system
  • Superfine filtration system
  • Laminar fountain jets with lighting
  • 20 LED lights with rim lighting
  • Aquasoul™ Pro 4.1 sound system
  • Wi-Fi smartphone control (standard)
  • Swimming stick included

Danube W Flow — Specifications

Wellis 2025 catalogue · W-Flow edition
DIMENSIONS & CAPACITY
Dimensions4 530 × 2 350 × 1 470 mm
Seats2 sitting places
Net weight / Water volume1 000 kg / 5 913 L
STRUCTURE
FrameStainless steel
Side coverHorizontSide™ or semi-inground
ReinforcementFiberglass reinforced
InsulationScandinavian insulation
JETS & PUMPS
Total number of jets24
Pumps (hydromassage)1 × 3 HP + W-EC pump
Pumps (swim spa)3 × 3 HP
Laminar fountain jets2 × 3 lighting
HEATING & WATER CARE
Heater3 kW
Water careWellisGuard™
Cartridge filter2 × Superfine
CONTROLS
Control panelSmartTouch
Auxiliary control panel—
LIGHTING & AMBIENCE
Waterfall—
Aromatic therapy—
Heat exchanger preparationstandard
Swimming stickstandard
Thermo coverstandard
Min. power requirement—
Opt. power requirement1 × 50A - 230V / 50Hz or 3 × 16A - 400V / 50Hz
Exclusive Lighting / Colour therapy1 × 20 exclusive LEDs + Rim lighting
Sound systemAquaSoul™ Pro 4.1
Remote spa controlSmartPhone app with wifi connection
OPTIONAL ADD-ONS (ALL EDITIONS)
3 kW heat pumpAvailable as option
Smart-In step (heat pump prep)Available as option
RollcoverAvailable as option

Documentation & Resources

Manufacturer and Warranty Information

Shipping Details

  • Free curb side delivery or White-Glove delivery for a fee
  • Ships within 5-10 business days for products in stock
  • Ships within 30 business days for products made to order / out of stock
  • 14-day return window
  • View the Delivery & Returns Page for more information

Compatible Wellis Accessories

Wellis-engineered accessories that fit this spa. Click "View details" for compatibility specifics or "Add to cart" to order.

Wellis Adapter for swim theter

Wellis Adapter for swim theter

€82.60
Wellis Automatic PH value meter AD11

Wellis Automatic PH value meter AD11

€86.56
Wellis Automatic water hardness meter AD31

Wellis Automatic water hardness meter AD31

€89.00
Wellis Bowman Heat exchanger

Wellis Bowman Heat exchanger

€2490.00
Wellis Buckle kit (4 pcs) with number combination lock

Wellis Buckle kit (4 pcs) with number combination lock

€19.04
Wellis Calibration KIT for Smart water analyzer

Wellis Calibration KIT for Smart water analyzer

€50.41
Wellis Conductivity probe for Smart Water Analyzer

Wellis Conductivity probe for Smart Water Analyzer

€163.59
Wellis Filter cleaning brush

Wellis Filter cleaning brush

€33.64
Wellis ORP probe for Smart Water Analyzer

Wellis ORP probe for Smart Water Analyzer

€163.59
Wellis Rollcover support bracket

Wellis Rollcover support bracket

€137.55
Wellis Rowing equipment

Wellis Rowing equipment

€490.00
Wellis Spa Cover Cleaning Towel

Wellis Spa Cover Cleaning Towel

€12.10
Wellis Spa Wand vacuum cleaner V2

Wellis Spa Wand vacuum cleaner V2

€90.86
Wellis Spa cleanser

Wellis Spa cleanser

€9.83
Wellis Spa dispenser

Wellis Spa dispenser

€14.29
Wellis Spa filter cleaning system

Wellis Spa filter cleaning system

€281.30
Wellis Spa-cleaning gloves

Wellis Spa-cleaning gloves

€10.58
Wellis Strap for roof lift

Wellis Strap for roof lift

€12.60
Wellis Swim Spa Step

Wellis Swim Spa Step

€149.00
Wellis Swim tether

Wellis Swim tether

€405.64
Wellis Universal Thermal Cover Lifter

Wellis Universal Thermal Cover Lifter

€289.00
Wellis pH probe for Smart Water Analyzer

Wellis pH probe for Smart Water Analyzer

€156.81

Top Features

Life Scandinavian Insulation

Designed for superior heat retention and energy efficiency, the system uses tightly fitted insulation panels and built-in air chambers in the base to help maintain the water’s warmth while reducing heat escape. A reflective inner layer redirects heat produced by the massage motors back into the water, helping it warm up more quickly. Enjoy a relaxing experience with improved comfort and smart energy use.

WellisGuard™️

Delivers water that stays up to 20% fresher when the recommended chlorine levels are maintained, offering a noticeable improvement over conventional systems. The advanced design helps maintain crystal-clear water for a consistently clean and refreshing experience.

Aquasoul™ Pro 4.1

Upgrade your spa experience with the advanced Wellis AquaSoul™ Pro sound system, engineered with high-performance waterproof components for seamless integration. Say goodbye to outdated wired setups—thanks to the built-in Bluetooth receiver, you can stream music wirelessly straight from your smartphone.

Choose between the powerful 4.1 configuration, featuring a 288 W subwoofer and four discreet 30 W speakers, or the more compact 2.1 system with two integrated 30 W speakers. Both options deliver clear, immersive sound, perfectly suited to any spa setting.

Exclusive Light Colour Therapy

The exclusive chromotherapy lighting system features a built-in underwater mood light seamlessly integrated into the spa’s side wall. Equipped with 10 to 20 LEDs, depending on the spa model, it works in sync with the main underwater chromotherapy light to create a balanced and relaxing ambiance throughout the spa.

Smartphone App Spa Control

Control your hot tub from anywhere in the world with the Spa Control app. No matter where you are, you can stay connected to your relaxation by managing your spa directly from your smartphone. The app features an easy-to-use interface that lets you adjust temperature, manage water care, and control spa functions through a wireless or mobile internet connection. With just a few taps, you can select modes such as Beginner, Away from Home, Energy Saving, Super Energy Saving, or Weekender, and the system will handle the rest.

Energy Saving W-EC pump

The water circulation pump is designed for efficient performance with very low energy consumption of just 190 W/h. Engineered for quiet operation and long-lasting reliability, it continuously maintains proper water circulation while keeping power usage minimal. Its energy-efficient design not only helps reduce operating costs but also makes it an environmentally responsible choice for maintaining clean and balanced spa water.

Smart-In Step System

The integrated step system is designed to house a 3 kW heat pump discreetly beneath the stairs. Operating efficiently in temperatures from -5°C to +40°C, it can deliver heating energy savings of up to 70–75%. The steps also feature built-in storage compartments, along with convenient options for phone charging and subtle illumination for added functionality and style.

Why Choose the Wellis Danube W-Flow?

The Wellis Danube W-Flow is a compact 4.53 m StreamLife swim spa with W-Flow counter-current — fits where full-size swim spas cannot. It sits in Wellis's StreamLife range and suits households who want pure couple hydrotherapy without wasted space.

Footprint and installation

Dimensions: 4530 × 2350 × 1470 mm. Dry weight: 1000 kg. Water volume: 5913 L.

Seating and hydrotherapy

Designed for 2 people with 2 seats with 24 jets, powered by 24 hydrotherapy jets and a 3-kW heater.

Electrical supply

It requires a 1 × 50A–230V supply minimum. Recommended upgrade: 3 × 16A–400V.

Technology included

Wellis StreamLife is a dedicated swim spa range with separate swim and hydromassage zones, Scandinavian insulation, and stainless-steel frame. The Danube W-Flow ships with SmartTouch control panel, WellisGuard water treatment, 4 × Antibacterial cartridge filtration, and SmartPhone app remote control. Standard thermo cover included.

Wellis Danube W-Flow Compared to Similar Models

These three Wellis alternatives are closest to the Danube W-Flow — same size, same seating layout, or the next step in a different product line:

Wellis Danube Riverjet

Same 4.53 m size with Riverjet counter-current instead of W-Flow.

2 seats24 jets4530 × 2350 × 1470 mmStreamLife
View Danube Riverjet

Wellis Amazonas W-Flow

Larger 5.5 m W-Flow alternative with more swim room.

2 seats26 jets5500 × 2350 × 1470 mmStreamLife
View Amazonas W-Flow

Wellis Elba Deluxe

Most-compact 3.96 m alternative for very small gardens.

4 seats33 jets3962 × 2200 × 1200 mmStreamLife Compact
View Elba Deluxe

Frequently Asked Questions about TwoRelax and the Wellis Danube W-Flow Swim Spa

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