Renu Therapy Cold Stoic 3.0 scores highest overall, while Sun Home Cold Plunge Horizontal is the most affordable. These products suit different buyers, so weigh the criteria that matter most for your setup rather than the headline score alone.
| 2 products | ![]() Sun Home Saunas Sun Home Cold Plunge Horizontal | ![]() Renu Therapy Renu Therapy Cold Stoic 3.0 |
|---|---|---|
| Price | $3,999 | $11,399 |
| Overall score | 7.7 | 8.4 |
| Minimum temperature (°F) | 32 °F (heats to 107 °F) | 37 °F |
| Chiller (HP) | 1 HP smart chiller | 0.5 HP |
| Capacity (people) | 2 persons | 1 person |
| Water volume (gal) | 80-90 gal (300-350 L) | 95 gal |
| Filtration | 20-micron paper filter + metal inlet screen | Dual-stage filtration |
| Sanitation | Built-in ozone injection | Ozone |
| Noise (dB) | 55-60 dB | ~54 dB |
| Electrical | 110-120V, 11A, GFCI outlet | 110V / 20A |
Sun Home Saunas
Best for Value-focused buyers who want true 32 °F cooling and contrast heat
Renu Therapy
Best for Design-led buyers who want a long warranty
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