Inergize Health Spire Elite vs Renu Therapy Cold Stoic Pure
Specs, prices, editor verdict, and who should buy which — compared side-by-side.
Renu Therapy Cold Stoic Pure wins on editor score (9.1 vs 8.7). See the per-buyer recommendations below — winners on score don't always win on fit.
Side-by-side specs
| Spec | Inergize Health Spire Elite | Renu Therapy Cold Stoic Pure |
|---|---|---|
| price | $7,990–$9,490 | $13,995–$14,995 |
| cooling | chiller | chiller |
| min temp f | 37 | 34 |
| capacity | 1-person | 1-person |
| dimensions | 39.5″ × 28.7″ × 43.76″ (exterior) | 78″ × 36″ × 30″ |
| water gallons | 90 | 110 |
| power | 120V / 15A / 890W | 110V / 15A |
| construction | 316 marine-grade stainless steel + thermotreated red cedar | cedar |
| tub warranty months | 12 | 60 |
| chiller warranty months | 12 | 36 |
Inergize Health Spire Elite also publishes: heating, maxTempF, interiorDimensions, seatHeight, weightEmptyLb, weightFullLb, weatherRating, coolingBTU, heatingBTU, coolingRate, heatingRate, compressor, flowRateGph, ozoneMgPerHour, noiseDB, designOrigin, manufacturing, leadTimeWeeks, fitsHeightUpTo, fitsWeightLb, financing, hsaFsa, moneyBackDays
Renu Therapy Cold Stoic Pure also publishes: weightLb
Who should buy which
Buyers who want premium cedar and 316-stainless build quality at sub-$8K — and who specifically want a seated vertical-hybrid that keeps them neck-deep without floating or full-supine immersion.
You need delivery in under 4 months, you want the longest warranty in the category (Renu's 60-month tub wins), or you want a 2-person tub.
Premium-aesthetics buyers who want sub-39°F temperatures, the longest warranty in the category, and a tub that reads as architecture.
You're budget-constrained, want apartment-friendly install, or don't care about premium materials.