Renu Therapy Cold Stoic 3.0 leads on our weighted scoring by 0.5 points over The Plunge (Original). The Plunge (Original) costs $6,109 less — about 54% — so the question is whether what Renu Therapy Cold Stoic 3.0 adds is worth that to you. They separate most on price (The Plunge (Original)), overall score (Renu Therapy Cold Stoic 3.0) and minimum temperature (The Plunge (Original)) — those are the rows worth reading closely. In short: Renu Therapy Cold Stoic 3.0 for design-led buyers who want a long warranty; The Plunge (Original) for full-body laydown immersion with app control.
| 2 products | ![]() Plunge The Plunge (Original) | ![]() Renu Therapy Renu Therapy Cold Stoic 3.0 |
|---|---|---|
| Price | $5,290 | $11,399 |
| Overall score | 7.9 | 8.4 |
| Minimum temperature (°F) | 37 °F (with Pro Chiller Gen 2) | 37 °F |
| Chiller (HP) | — | 0.5 HP |
| Capacity (people) | — | 1 person |
| Water volume (gal) | 105 gal | 95 gal |
| Filtration | Circulation filtration; six filters plus carbon hose filter included | Dual-stage filtration |
| Sanitation | Chemical water treatment kit (chemicals and test strips included); no ozone/UV stated | Ozone |
| Noise (dB) | — | ~54 dB |
| Electrical | Dedicated 120V 15A circuit | 110V / 20A |
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Plunge
Best for Full-body laydown immersion with app control
Renu Therapy
Best for Design-led buyers who want a long warranty