Edge Theory Labs The Edge Tub vs Inergize Health Spire Elite
Specs, prices, editor verdict, and who should buy which - compared side-by-side.
Edge Theory Labs The Edge Tub (premium, $6,995–$7,995) vs Inergize Health Spire Elite (premium, $7,990–$9,490) - Editor pick: Inergize Health Spire Elite (Edge Theory Labs is $1,245 cheaper).
Compared on 9 shared specs · editor scores 8.2 vs 8.7 · same category (cold plunge).
Inergize Health Spire Elite wins on editor score (8.7 vs 8.2). See the per-buyer recommendations below - winners on score don't always win on fit.
Side-by-side specs
| Spec | Edge Theory Labs The Edge Tub | Inergize Health Spire Elite |
|---|---|---|
| price | $6,995–$7,995 | $7,990–$9,490 |
| cooling | chiller | chiller |
| min temp f | 37 | 37 |
| capacity | 1-person | 1-person |
| dimensions | 70″ × 32″ × 26″ | 39.5″ × 28.7″ × 43.76″ (exterior) |
| water gallons | 100 | 120 |
| power | 110V / 15A | 120V / 15A / 890W |
| construction | inflatable drop-stitch (PVC) | 316 marine-grade stainless steel + thermotreated red cedar |
| tub warranty months | 24 | 12 |
| chiller warranty months | 24 | 12 |
Edge Theory Labs The Edge Tub also publishes: weightLb, status
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
Who should buy which
Reference only. There is no current buyer for this product - the brand is defunct and the tub is no longer sold.
You want a tub you can actually buy and get serviced - this brand ceased operations around November 2024; see Plunge or Renu Therapy.
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.
Go deeper
Frequently asked
Which is better, the Edge Theory Labs The Edge Tub or the Inergize Health Spire Elite?
On our editor scoring the Inergize Health Spire Elite edges it at 8.7/10. Both are strong; the right pick depends on your use case, which the verdict and spec table above break down.
How much do they cost?
Edge Theory Labs The Edge Tub: $6,995 to $7,995. Inergize Health Spire Elite: $7,990 to $9,490. Prices are verified against the manufacturer; check the live links for current pricing.
Who should buy which one?
Edge Theory Labs The Edge Tub: Reference only. There is no current buyer for this product - the brand is defunct and the tub is no longer sold. Inergize Health Spire Elite: 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.