
Sun Home Saunas
Sun Home Cold Plunge Pro
Best for Maximum cold and water hygiene, or shared use
- Minimum temperature
- 32 °F
- Chiller
- ~1.0 HP
- Capacity
- 1–2 people

A commercial-grade tub used by teams and serious athletes. It reaches 34°F and is built for heavy, repeated use — at a price that puts it firmly in the professional tier.
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BlueCube built its reputation with athletes and facilities, and the C3 reflects that: documented to reach 34°F with micron filtration and ozone, and engineered for heavy, back-to-back use where lighter consumer chillers struggle. It sits within a wider BlueCube lineup that spans roughly $12,750 (DEEP D1) to $20,500 for the C3 and beyond.
BlueCube publishes limited public specs — figures like chiller horsepower are quoted on request — so some details here carry lower confidence. But the core positioning is clear and well-earned: if your priority is genuinely cold water that recovers fast for multiple users, and budget is secondary, this is the professional-grade choice.
Installation
Freestanding; dedicated circuit and rated surface.
Electrical
Dedicated circuit (confirm with BlueCube)
Running cost
Higher; commercial-grade chilling
Warranty
Guaranteed (see BlueCube)
Maintenance
Micron filtration + ozone; facility-grade upkeep.
Returns
Limited returns
See this product side by side with its closest rivals.
The manufacturer documentation, independent reviews and retailer listings this review draws on, with the date each was last checked.

Sun Home Saunas
Best for Maximum cold and water hygiene, or shared use

Renu Therapy
Best for Design-led buyers who want a long warranty

Plunge
Best for Buyers who want a commercial-grade separate chiller