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Boston 4-Person Non-Lounger Spa

Regular price $4,990.00
Regular price Sale price $4,990.00
Sale Out of Stock

*Delivered within 10 business days from order date.

*Free freight to most areas in the lower 48 states. Surcharge may apply to some remote areas.

The Boston 4-person hot tub spa comes equipped with a silver-marble shell, gray outer cabinet and a charcoal gray hard cover.  Get ready to relax and indulge with integrated headrests, 23 therapeutic jets and an adjustable cascading waterfall!

Maintenance-Free Weather Guard Cabinet:

Weather Guard™ is the industry's best, maintenance-free spa cabinet.  Weather Guard™ is fade resistant with built-in UV-inhibitors. Unlike other poly-plastic cabinets in the market today that are thin and flimsy resulting in warping and fading, a USA Spa Weather Guard™ cabinet is constructed of strong and durable polystyrene that won't crack, splinter or peel. This material is similar to high-end vinyl windows for your home. And since it replaces the wood of most spa cabinets, Weather Guard™ is termite, moisture, and rot resistant and 214% more rigid than wood. Weather Guard™ is energy efficient too - 62% more than traditional wood!

Polar Insulation System:

All USA Spas come with our double layer Polar Insulation System™. A thick layer of polystyrene foam and a heat reflective thermal-blanket on the wall and floor retain heat within the cabinet. (Recommended for outside air temperatures of +10° F and above).

Shell Strengthening System:

  1. Acrylic Plus
    spa shell strengthening design
  2. ABS
  3. Dura-Bond with Foam Insulation
  4. Polyethylene Foam
  5. Weather Guard Cabinet
  6. Polystyrene Insulation
  7. Radiant Foil Insulation
  8. Thermal Air Barrier
  9. Moisture-Resistant Polyethylene Flooring

Patented Dura-Bond ™

This multi-layered, patented strengthening process combines the beauty of Lucite Plus Acrylic with a layer of ABS for shell strength and integrity. Then a double strengthening material is applied. This high density material has all the strengthening properties of fiberglass without the environmental concerns.


Electronic Topside Soft-Touch Control:

All USA Spas come with a digital electronics control with LCD temperature and filtration read-outs. The heat and humidity resistant microprocessor requires no programming.

Energy Saver System:

Heat is generated by the spa’s power equipment inside the cabinet. This heated air is captured and returned to the spas water. This continually helps maintain the water temperature without running the heater as often. This heat recovery system saves you money in electrical cost and helps save our planet.

High Powered Stainless Steel Jets:

Designed and built exclusively for USA Spas, jets are positioned for optimum performance. Settings range from power surge, which creates a lively swirling action to a high-power flow narrow which delivers a narrow stream for more intense therapy targeting specific areas of your body.

stainless steel therapeutic jets spa hot tub

USA Spa's Ozone System:

Ozone is a safe, convenient, low cost way to clean your spa water. It is a natural purifier that aids in eliminating bacteria, viruses, mold & mildew. It helps remove minerals while using fewer sanitizing water care products. All USA Spas come equipped with the USA Spa’s Ozone System Natural Water Sanitizing System.

LED Lighting Package:

The Boston comes with top perimeter LED optics and main lighting.  Variable colors change at two second intervals or stop on a single color.

LED 5" Light kit for spa hot tub

Key Features:

  • 4 Person Non-Lounger Spa
  • 78”L x 68”W x 32”D
  • (1) 5.2 BHP Hi-Flow Pump
  • Air Control
  • 23 Therapeutic Stainless Steel Jets
  • Integrated Headrests
  • Adjustable Cascading Waterfall
  • Dual Adjustable Collar Jets
  • Patented Dura-Bond™ Acrylic Shell
  • Maintenance-Free Weather Guard™ Cabinet
  • 200 Gallons/45 Sq. Ft. Filter
  • 4 KW Heater
  • 220 Volt System
  • Package M Lighting: Top perimeter LED optics and main lighting.
  • Charcoal Gray Hard Cover Included

More about USA Spas

Since 1966, USA Spas has been a leading spa manufacturer in the United States. Located in Dewitt, Iowa, we are a U.S. manufacturing plant dedicated to manufacturing quality hot tub spas. We have always believed in the power of American craftsmanship and innovation.

We use American components whenever possible. We are always searching out and testing improved technologically, advanced spa parts and processes. Our goal is to provide you with the ultimate spa experience at a competitive price. Our hot tubs are manufactured to the highest standards and tested for Quality by ETL for your safety and peace of mind.

Many of our features and processes are patented and only available through USA Spas. Our mid western work ethic and decades of experience can provide you with the best built spas around. Learn for yourself why we have such a loyal following. Even though our spas are sold around the world, they will always be built right here – where we started over 56 years ago.