Inergize Spire Elite vs Renu Therapy Cold Stoic 3.0
Renu Therapy Cold Stoic 3.0 scores highest overall, while Inergize Spire Elite 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.
Minimum temperature:Inergize Spire EliteChiller:Inergize Spire Elite
| 2 products |  Inergize Inergize Spire Elite |  Renu Therapy Renu Therapy Cold Stoic 3.0 |
|---|---|---|
| Price | $7,990 | $11,399 |
| Overall score | 8.3 | 8.4 |
| Minimum temperature (°F) | 37 °F (heats to 104 °F in hot tub mode) | 37 °F |
| Chiller (HP) | 0.8 HP industrial Elite chiller (modular, on casters) | 0.5 HP |
| Capacity (people) | — | 1 person |
| Water volume (gal) | 120 gal | 95 gal |
| Filtration | 4-way filtration: strainer, 20-micron filter, continuous ozone, air-intake filter | Dual-stage filtration |
| Sanitation | Continuous ozone, 400 mg/hr output, automated cycles | Ozone |
| Noise (dB) | — | ~54 dB |
| Electrical | Standard 120V / 60Hz / 15A grounded outlet; 890W active draw | 110V / 20A |
Inergize
Inergize Spire Elite
Best for A furniture-grade vertical plunge with seated comfort
$7,990$9,490
Renu Therapy
Renu Therapy Cold Stoic 3.0
Best for Design-led buyers who want a long warranty
$11,399
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