American Whirlpool MB4


  • Modern Mocha
  • Pecan Ridge
  • Resort Gray


  • Silver Marble

American Whirlpool® MB4

The American PowerPool® MB4 is a versatile 14-foot swim spa that provides seating for up to nine people without interfering with the swim lane. It features powerful MAAXForce swim jets and multiple exercise equipment options for a competitive water fitness experience. With a water capacity of 1325 gallons, the MB4 combines the benefits of a traditional spa with the exercise advantages of a swim spa.

The MB4 swim spa allows you to swim, jog, or walk against an adjustable current for low-impact cardio. The hydrotherapy jets target sore muscles for pain relief and recovery. Owners praise the comfort, quality, and customer service from American PowerPool®. The MB4 is an excellent choice for families who want space to swim, play, and lounge together. With versatile seating, powerful jets, and ample room to exercise, the American PowerPool® MB4 delivers the ultimate aquatic experience.

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  • Starting At


  • Monthly Payment


9.99% APR until paid in full.

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Technical Specifications

  • Therapy Needs

    Arthritis & Fibromyalgia, Better Sleep, Ease Sore Muscles, Exercise, Improve Range of Motion, Stress Relief

  • Voltage


  • Spa Style

    Swim Spa

  • Swim Spas Brand

    American Whirlpool

  • Seating Capacity

    2-3 People

  • Budget


  • Dimensions

    168" Long x 90" Wide x 50" Tall

  • Pumps

    3 Pumps

  • Jets


The versatile American PowerPool® MB4 14-foot swim spa provides seating for up to 9 people while still offering a dedicated swim lane, and features powerful MAAXForce swim jets to provide adjustable water currents for swimming, jogging, or walking against the flow for low-impact cardio. With a large 1325 gallon water capacity, it combines a traditional spa experience with the fitness advantages of a swim spa, and includes 27 hydrotherapy jets targeting sore muscles for pain relief and recovery. Owners praise the comfort, quality, and customer service from American PowerPool®. The MB4 allows families to swim, lounge, and play together, with versatile seating options, ample room to exercise, adjustable swim currents, and therapeutic massage jets delivering the ultimate aquatic experience.

The MB4 swim spa provides a variety of therapeutic benefits through its hydrotherapy jet system, including pain relief, stress reduction, improved circulation, better sleep, and faster recovery from injury or exercise. The powerful jets target sore muscles and stiff joints, while the heated water improves blood flow, relaxes the body, and promotes deep sleep. Owners praise the massage benefits for diminishing arthritis pain, unwinding after a long day, and recovering from strenuous workouts. The swim spa allows low-impact exercise that strengthens muscles while reducing strain on joints. For those managing injuries, chronic conditions, or everyday aches and pains, the MB4 delivers an at-home spa experience with proven therapeutic results.


Blue MAAX insulation is an an eco-friendly insulation system made from recycled natural fiber and approved by the U.S. Green Building Council. Combined with 3M Thinsulate™ insulation, Blue MAAX is part of the Northern Exposure® Insulation System, a patented thermal barrier that recycles free heat energy for more efficient heating and lower energy costs.

Appliance Grade

The American Whirlpool® hot tubs offer appliance-grade benefits, ensuring high-quality, feature-rich, and affordable products for customers. These hot tubs boast revolutionary Blue MAAX insulation, an eco-friendly system that drives efficiencies in water and energy use, ultimately saving consumers time and money.

Lifetime Insulation Warranty

This warranty ensures that the insulation system in your American Whirlpool® hot tub maintains the same insulation value as it had at the time it was manufactured. The high R-value, Appliance Grade™ construction allows a technician to service the hot tub and bring it back to factory specifications right in your backyard for the lifetime you own it.

  • Exercise Kit
  • Swim Tether
  • Pneumatic Power Oars


Programmable Filter Cycles
Programmable Filter Cycles

Enhance your spa experience with American Whirlpool's programmable filter cycles. Schedule automatic cleaning sessions at your convenience, ensuring a consistently clean and hygienic oasis. 

Steel Substructure
Steel Substructure

Experience the highest level of durability and longevity with American Whirlpool hot tubs, the pioneers of the world's first steel frame Appliance Grade® design. Our hot tubs boast a steel frame that surpasses the strength of wood.

DuraMAAX Cabinetry
DuraMAAX Cabinetry

Experience the elegance of natural wood without the upkeep using DuraMAAX®, a state-of-the-art wood-alternative material. It offers the look and feel of real wood without maintenance, while being impact resistant, weatherproof, and impervious to insect damage.

Northern Exposure
Northern Exposure

Experience the ultimate in hot tub insulation with Northern Exposure® and Thermo-Lock technology. This patent-pending thermal barrier system recycles heat energy, ensuring more effective heating and reduced energy expenses with copper reflecting material.

ABS Bottom Pan
ABS Bottom Pan

Ensure a solid foundation and optimal insulation for your American Whirlpool hot tub with the ABS Sealed Base. This integral component serves as a sturdy support structure, featuring one-piece construction that forms a rugged foundation for your spa. 

Touchscreen Controls

The Whirlpool Smart Touch top side control panel revolutionizes your hot tub experience. With this cutting-edge feature, you have full control at your fingertips to adjust temperature settings, activate jets, and customize the massage intensity.

Dynamic LED Lighting
Dynamic LED Lighting

Transform your spa experience with the captivating ambiance created by the large LED light in the footwell of your American Whirlpool spa. This striking feature sets the mood for your entire spa experience, immersing you in a captivating world of soothing colors.

Factory Installed Ozone
Factory Installed Ozone

Experience ultimate in spa water purification with CleanZone™ and CleanZone II™. CleanZone™ utilizes advanced plasma cell UV lamp technology to generate ozone, eliminating bacteria, viruses, and parasites from your spa water.