A genuine 37-107F range in a compact, fast-setup tub.

Inergize Cold & Hot Plunge Tub

Inergize

The best hot-and-cold pick: a true 37-107F range and good filtration in a compact, fast-setup package. Accept the inflatable build and it's a lot of versatility for the money.

The Inergize pairs a drop-stitch inflatable tub with an included 1,800-watt WiFi chiller that both heats and cools across a true 37-107F range, all app-controlled. A four-stage filter with ozone keeps water clean, and the whole thing sets up in about 20 minutes. It's the easiest way to get both an ice bath and a hot soak in a small space.

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Last reviewed Jun 20, 2026

What we like

• ✓Heats and cools across a genuine 37-107F range
• ✓Included chiller with four-stage filter plus ozone
• ✓Fast ~20-minute setup
• ✓Compact and lightweight for small spaces
• ✓WiFi app control with frequent promo pricing

Trade-offs

• −Inflatable feels less premium than hard shells
• −List price near $4,490 (street ~$3,490)
• −Chiller adds noise and footprint beside the tub
• −Long-term inflatable durability is unproven