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Head-to-head buyer guide
Edge Tubs Edge Pro vs Renu Therapy Cold Stoic Pure
Specs, prices, editor verdict, and who should buy which — compared side-by-side.
By Ryan · Editor & Founder
Published May 3, 2026
The verdict
Renu Therapy Cold Stoic Pure wins on editor score (9.1 vs 8.2). See the per-buyer recommendations below — winners on score don't always win on fit.
Side-by-side specs
| Spec | Edge Tubs Edge Pro | Renu Therapy Cold Stoic Pure |
|---|---|---|
| price | $6,995–$7,995 | $13,995–$14,995 |
| cooling | chiller | chiller |
| min temp f | 37 | 34 |
| capacity | 1-person | 1-person |
| dimensions | 70″ × 32″ × 26″ | 78″ × 36″ × 30″ |
| water gallons | 100 | 110 |
| weight lb | 175 | 320 |
| power | 110V / 15A | 110V / 15A |
| construction | acrylic | cedar |
| tub warranty months | 24 | 60 |
| chiller warranty months | 24 | 36 |
Who should buy which
Pick the Edge Tubs Edge Pro if
Mid-premium buyers who want chillered convenience, sub-Plunge temperatures, and don't need cedar aesthetics or a 5-year-old installed base.
Skip if
You want the largest service network (Plunge), or you want premium aesthetics + 34°F (Renu).
Pick the Renu Therapy Cold Stoic Pure if
Premium-aesthetics buyers who want sub-39°F temperatures, the longest warranty in the category, and a tub that reads as architecture.
Skip if
You're budget-constrained, want apartment-friendly install, or don't care about premium materials.