Rectangular rigid cold plunge tub with internal chiller unit
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BlueCube

C2 - XL

Standard XL
Differs from base model: Tub outer dimensions LxWxH (inches), Tub outer height (mm), Tub outer length (inches), Tub outer length (mm), Tub internal dimensions LxWxH (inches)
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The C2 Cold Plunge Tub provides RiverMode adjustable flow with three-speed hydro-jets, full-body immersion, premium wood finishes, and custom color options.

Tub structure
Rigid
Chiller included
Yes
Hot tub mode
Yes

Description

The BlueCube C2 Cold Plunge Tub features RiverMode with three-speed hydro-jets for adjustable water circulation that maintains consistent cooling. Built from 316 stainless steel with a patented Line-X weatherproof outer shell, it suits indoor and outdoor placements. A commercial chiller with Japanese compressors enables a temperature range suited for cold therapy, paired with 20-micron filtration and ozone sanitation for water clarity and hygiene.

Ergonomically contoured for comfort, it includes premium walnut or mahogany wood tops, four standard colorways, and custom color options. Plug-and-plunge ready on a standard outlet.

Commercial compliance upgrade can be bought as an additional package.

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)
98.50 inches
Standard: 92.50 inches
Tub outer length (mm)
2502 mm
Standard: 2350 mm
Tub outer width (inches)
43.50 inches
Tub outer width (mm)
1105 mm
Tub outer height (inches)
28.50 inches
Tub outer height (mm)
726 mm
Standard: 724 mm
Tub outer dimensions LxWxH (inches)
98.5 × 43.5 × 28.5
Standard: 92.5 × 43.5 × 28.5
Tub internal dimensions LxWxH (inches)
66 × 24 × 21.25
Standard: 60 x 24 x 21.25
Tub internal dimensions LxWxH (mm)
1524 x 610 x 540

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

Users

Maximum user height (inches)
6 ft 4 in
Maximum user height (cm)
193 cm
Person capacity (stated by manufacturer)
1 people

General

Plunging orientation
Horizontal
Tub structure type
Rigid
Chiller location
Built-in
Chilling type
Electric chiller
Commercial use approved
Default warranty (years)
3 years
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 C2 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 C2 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 C2 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 C2 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.

Other cold plunges from BlueCube

Rectangular rigid cold plunge tub with internal chiller unit
Illustrative image