Rectangular rigid cold plunge tub with external chiller unit
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BlueCube

Modular Cold Plunge

Bundle

The BlueCube Modular Cold Plunge is a modular, installer-friendly cold plunge system available in three frame sizes, built around a separable component box that can be positioned up to 25 feet / 7.62 meters from the tub — designed for residential and light commercial settings where flexible placement matters.

Tub structure
Rigid
Chiller included
Yes
Hot tub mode
Yes

Description

The BlueCube Modular Cold Plunge is engineered for installations where component placement flexibility is a priority. Its separable component box can be located up to 25 feet / 7.62 meters from the tub, reducing tub-side noise and heat output.

The system is available in three frame sizes, and the neck-deep contoured interior supports full-body immersion. The tub is constructed from 14-gauge 316 stainless steel as standard, with carbon fiber, hemp carbon, and gel-coated fiberglass available as alternatives. The exterior features Line-X® weatherproof coating, and a range of wood deck finishes — including walnut, mahogany, and white oak — can be specified at order.

The chilling system is powered by a 1.5 HP commercial-grade motor with Japanese compressors, operating across a temperature range from near-freezing to warm soak temperatures, and rated to function in ambient conditions down to well below freezing.

Ater circulation is handled by the dual-pump RiverMode+™ system — designed to maintain continuous water flow and eliminate the thermal layer that forms around the body in still water.

Filtration runs through a 20-micron system paired with automatic ozone sanitation. A commercial upgrade package adds AOP or chlorine dosing options for higher-traffic or regulated environments. The unit arrives fully assembled and requires a standard dedicated outlet.

Where to buy

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Details & features

Features

Chiller included
Cover lid included
Included Cover lid is insulated
Hot tub mode
Suitable for outdoor use

Temperature

Minimum set temperature (°F)
37 °F
Minimum set temperature (°C)
3 °C
Maximum heating temperature (°F)
104 °F
Maximum heating temperature (°C)
40 °C

Dimensions & weight

Tub outer length (inches)
67.50 inches
Tub outer length (mm)
1715 mm
Tub outer width (inches)
31.50 inches
Tub outer width (mm)
800 mm
Tub outer height (inches)
28.50 inches
Tub outer height (mm)
724 mm
Tub outer dimensions LxWxH (inches)
67.5 x 31.5 x 28.5
Tub outer dimensions LxWxH (mm)
1715 x 800 x 724

Power & performance

Power (hp)
1.5 hp
Cooling power (BTU/hr)
13600 BTU/hr
Supports 110-120V / 60Hz

Details filtering

Main filter included
Main filter micron rating
20 microns

Details sanitation

Ozone (O₃) sanitation

General

Plunging orientation
Horizontal
Tub structure type
Rigid
Chiller location
External
Maximum distance between tub and chiller possible (meters)
7.6 m
Maximum distance between tub and chiller possible (feet)
25'
Chilling type
Electric chiller
Adjustable set-point
Active water circulation
Tub basin main material
Stainless steel
Tub basin steel grade
316 (marine-grade)

Data sources

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Frequently asked questions

Yes — the Modular Cold Plunge includes a hot tub mode, allowing you to switch from cold immersion to warm water soaking heating water up to 104 °F (40 °C). This makes it a dual-purpose unit suitable for both cold therapy and relaxation or contrast therapy protocols.

Yes — the Modular Cold Plunge is a complete system that includes a built-in chiller. No separate cooling unit is required; you can start cold therapy as soon as it is set up and filled.

The Modular Cold Plunge is a horizontal cold plunge designed for seated or reclined immersion, similar in form to a bathtub. This is the most common orientation for home cold therapy setups.

The tub basin of the Modular Cold Plunge is made from stainless steel.

Stainless steel offers excellent hygiene, durability, and resistance to corrosion, making it a popular choice for premium cold plunge tubs.