The Renu Cold Stoic 2.0 sits at the top of the cold plunge market. With a starting price of $9,699, a cedar exterior, and a 60-month tub warranty, it competes in a category where buyers expect handcrafted quality, whisper-quiet operation, and sub-40°F temperatures out of the box.
But at nearly $10,000, it costs more than a Plunge All-In and an Ice Barrel 500 combined. Is the premium worth it? This review covers every detail.
Disclosure: We may earn a commission if you purchase through links on this page, at no extra cost to you. Learn more.
Quick Verdict
Rating: 9.5 / 10 ★★★★★
Best For: Buyers building a forever wellness setup who want the best cold plunge money can buy — sub-36°F temperatures, cedar aesthetics, and the longest warranty in the category.
Price: $9,699 (Cold Stoic 2.0) — $13,995 (Stoic Pure)
Bottom Line: The Renu Cold Stoic 2.0 is the best cold plunge we have reviewed. It is the coldest, the quietest, the best-insulated, and the longest-warrantied tub on the market. The price is steep, but for buyers who want a true heirloom-quality plunge, nothing else comes close.
Pros & Cons
| ✅ Pros | ❌ Cons |
| Cedar exterior — beautiful, natural insulation | Extremely expensive at $9,699+ |
| 34-36°F minimum temp — coldest on this list | Heavy — professional installation recommended |
| Whisper-quiet chiller operation | Lead times can be 4-8 weeks |
| 60-month tub warranty (industry best) | Not portable — this is a permanent installation |
| Holds temp 14+ hours unplugged | Limited customer reviews vs Plunge (smaller install base) |
| UV filtration + optional ozone | No app control on base model |
Key Features
| Feature | Specification |
|---|---|
| Price | $9,699 (Stoic 2.0) — $13,995 (Stoic Pure) |
| Minimum Temperature | 34-36°F (1-2°C) |
| Chiller Type | Integrated 3/4 HP (whisper-quiet) |
| Filtration | UV standard, ozone optional |
| Power | 110V standard outlet |
| Insulation | Cedar + closed-cell foam — holds cold 14+ hours unplugged |
| Dimensions | 72″ x 30″ x 36″ |
| Warranty | 60 months tub, 24 months chiller |
| App Control | Optional (Stoic Pure) |
Who Is the Renu Cold Stoic 2.0 For?
- Premium buyers building a dedicated wellness space and willing to invest in the best
- People who want sub-39°F water — the Cold Stoic hits 34-36°F, colder than any competitor
- Design-conscious homeowners — the cedar exterior looks like furniture, not fitness equipment
- Outdoor installations in cold climates — the insulation is unmatched for winter performance
Who Should Skip It
- Budget buyers — the Ice Barrel 500 at $1,199 delivers 80% of the physiological benefits
- First-time plungers — start with something cheaper to confirm this habit is for you
- People who want hot+cold contrast therapy — the Plunge All-In heats to 103°F; the Cold Stoic does not
- Anyone who moves frequently — this is a 300+ lb permanent installation
How It Compares
| Renu Cold Stoic 2.0 | Plunge All-In | Ice Barrel 500 | Edge Tub Pro | |
|---|---|---|---|---|
| Price | $9,699 | $4,990 | $1,199 | $3,499 |
| Min Temp | 34-36°F | 39°F | Ice-based | 39°F |
| Build | Cedar + foam | Acrylic/plastic | Composite | Insulated acrylic |
| Filtration | UV + optional ozone | Ozone + UV | None | Ozone |
| Warranty | 60 months | 24 months | 12 months | 24 months |
| Rating | 9.5/10 | 9.2/10 | 7.8/10 | 9.0/10 |
For a complete breakdown of every option, see our Best Cold Plunge Tubs 2026 guide.
What Real Owners Say
With a smaller installed base than Plunge, owner feedback is limited but consistent. Across 15+ verified reviews:
- Build quality is exceptional — the cedar exterior is often described as “heirloom quality”
- Temperature stability is unmatched — owners report water staying cold for 14-18 hours after the chiller turns off
- Chiller is near-silent — unlike the hum of the Plunge unit, the Renu chiller is barely audible
- Customer service is personal — Renu is a smaller company and provides hands-on support
Pricing & Where to Buy
The Renu Cold Stoic 2.0 starts at $9,699. The Stoic Pure (upgraded chiller, app control, premium cedar finish) starts at $13,995. Both are available directly from Renu Therapy.
Frequently Asked Questions
How cold does the Renu Cold Stoic 2.0 get?
The Stoic 2.0 reaches 34-36°F. The Stoic Pure reaches a measured 34°F floor. This is colder than any competitor at a similar price point.
Does the Cold Stoic require an electrician?
No. It plugs into a standard 110V outlet. Professional installation of the unit itself is recommended due to its weight.
How is the cedar exterior maintained?
The cedar is sealed and requires minimal maintenance. Occasional re-oiling (once per year) keeps the wood looking fresh.
Can I use it outdoors in freezing weather?
Yes. The cedar + closed-cell foam insulation is designed for year-round outdoor use, including below-freezing temperatures.
Is Renu Therapy a reliable company?
Renu has been in business since 2019 with a solid reputation. Their 60-month tub warranty is the strongest in the industry. The main risk is their smaller size compared to Plunge — support response times may vary.
Final Verdict
The Renu Cold Stoic 2.0 is the best cold plunge we have reviewed — full stop. It is colder, quieter, better-insulated, and longer-warrantied than anything else on the market.
Whether it is worth $9,699+ depends entirely on your budget and priorities. If you want the absolute best and plan to keep it for a decade, the Renu is a compelling investment. If you want a very good plunge at half the price, the Plunge All-In is the smarter choice.
Rating: 9.5 / 10 — The best cold plunge money can buy.
Download Your Free 30-Day Cold Plunge Protocol
Start your cold plunge journey on the right foot — regardless of which tub you choose.
Last updated: June 2026. Prices and specifications verified at time of writing.