Renu Therapy builds premium plunges with clearly published specs, hot-and-cold capability on most models and a five-year limited warranty that beats much of the competition. Prices are high, but the combination of transparency, choice of formats and matching saunas makes it a strong long-term investment.
What we like
- Five-year limited warranty on most plunge models
- Detailed specs for every plunge: temperature range, chiller power, filtration and weight
- Hot and cold capability up to 100–104°F on several models
- Upright, compact and lay-down formats, plus a commercial-grade option
- Free shipping and matching saunas with bundle savings
Keep in mind
- Premium pricing from about $7,500
- Heavier tubs (up to 650 lb empty) need solid flooring and careful placement
- Infrared sauna pricing is only available on request
Renu Therapy makes premium cold plunges and saunas for home and commercial use. Its tubs sit at the high end of the market, but the company is more transparent than many rivals about what you get: every plunge lists its temperature range, chiller horsepower, filtration type and empty weight, and most carry a five-year limited warranty.
Renu is mentioned alongside other premium names as a source of high-quality at-home plunge setups. In this review we compare the Cold Stoic, Vero, Aurelius and Siberian Pro plunges, look at the sauna range and explain how to choose.
Who is Renu Therapy?
Renu focuses on contrast therapy: cold plunges for home and commercial spaces and saunas to pair with them. Most plunges can both chill and heat water, so they double as warm soaking tubs. Tubs come in a range of tub and deck colors, which matters when a plunge will sit in a living space or on a visible patio.
Renu also serves gyms, spas, teams and studios through a commercial program, and a Stoic Pro model was listed as coming soon with a waitlist.
What we like most in our research is how easy Renu makes it to compare models. Each plunge lists the same key numbers side by side, so you can see at a glance how chiller power, temperature range, filtration and weight change as you move up or down the range. That kind of transparency is still surprisingly rare in the premium plunge market, where many brands focus on lifestyle imagery rather than specifications.
The cold plunges, compared
- Cold Stoic 3.0 (from about $12,799, or about $413 a month): the flagship. Water from 37°F to 104°F, a 0.5 HP chiller, dual-stage plus ozone filtration, touchscreen and app control, 365 lb empty, 5-year warranty.
- Cold Stoic 2.0 (from about $9,999): cold only, down to 39°F, 0.25 HP chiller, standard plus ozone filtration, built-in controls, 350 lb, 5-year warranty.
- Vero (from about $7,500, or about $242 a month): the compact option. 37°F to 100°F, a 0.8 HP chiller, XL filter plus ozone, touchscreen and app, just 129 lb empty, 5-year warranty.
- Aurelius (from about $11,999): a full-length lay-down plunge. 37°F to 104°F, 0.5 HP chiller, dual-stage plus ozone, touchscreen and app, 297 lb, 5-year warranty.
- Siberian Pro (from about $15,499): a large plunge with a commercial-grade 0.8 HP chiller, down to 37°F, XL filter plus ozone, 650 lb empty, 1-year warranty.
See Renu Therapy's current range
Saunas and bundles
- Sanctuary 2: a 2 to 3 person full-spectrum infrared sauna with app control and a near-zero EMF claim. Pricing is available on request.
- Rusticus (from about $7,523): an indoor traditional cabin for 2 to 6 people that heats to 195°F.
- Zeno (from about $7,769 for 2 people): an outdoor barrel sauna for 2 to 8 people with premium lumber and LED lighting.
- Sauna and plunge bundles (from about $15,750): save up to about $2,000 compared with buying separately.
Renu also sells essentials such as maintenance items, accessories and sauna add-ons.
How to pick the right Renu plunge
- Tight on space or weight? The Vero is the lightest and most compact, and also the least expensive, while still offering 37°F water, heating and app control.
- Want to lie back fully? The Aurelius lay-down design suits taller users and people who prefer reclining.
- Want the flagship experience? The Cold Stoic 3.0 pairs the widest temperature range with dual-stage filtration.
- Only need cold? The Cold Stoic 2.0 drops the heating function for a lower price.
- Heavy use or commercial? The Siberian Pro has the largest chiller and capacity, but note its shorter 1-year warranty.
Check your floor can support a filled tub, especially for the heavier models, and plan for drainage and a dedicated outlet.
Price, financing and warranty
Renu ships plunges and saunas free, with taxes calculated at checkout. Monthly payment estimates appear on several models, and the brand has a dedicated financing options page. The headline policy is the five-year limited warranty on most plunges, which is longer than many competitors' standard cover. The Siberian Pro is the exception at one year. Read the cancellation and return policy before ordering, as large items often have specific terms.
When budgeting, look beyond the sticker price. A hot-and-cold plunge uses electricity to hold temperature, and filters and sanitizer are ongoing costs. You may also need an electrician to add a dedicated outlet and, for outdoor installs, a level, solid base. Bundling a sauna and plunge can offset some of these costs through the up to $2,000 bundle saving.
How Renu compares
Compared with the best-known mainstream plunge brands, Renu is similarly priced or a little higher, but often wins on warranty length, published specs and format choice. Compared with ultra-premium ice-making baths, it is less expensive and more feature-rich, with app control and heating, though it does not freeze the water. Compared with portable inflatable tubs, it is a completely different class of product: permanent, filtered and temperature-controlled.
Our verdict
Renu Therapy is one of the most transparent premium plunge brands we looked at. Clear specs, hot-and-cold flexibility, several formats and a five-year warranty on most models make it easy to buy with confidence. The cost is significant, but for buyers ready to invest in a long-term contrast therapy setup, Renu deserves a place near the top of the shortlist.
Renu Therapy products at a glance
| Product | What it is | Price |
|---|---|---|
| Cold Stoic 3.0 | Flagship hot-and-cold plunge, 37–104°F, 0.5 HP chiller, dual-stage plus ozone filtration. | from about $12,799 |
| Vero | Compact 129 lb plunge, 37–100°F, 0.8 HP chiller, touchscreen and app. | from about $7,500 |
| Aurelius | Full-length lay-down plunge, 37–104°F, with app control. | from about $11,999 |
| Siberian Pro | Large plunge with a commercial-grade 0.8 HP chiller down to 37°F. | from about $15,499 |
| Zeno Outdoor Barrel Sauna | Traditional barrel sauna for 2 to 8 people with LED lighting. | from about $7,769 |
Prices as listed on the brand's site at the time of our research and may change. Check the store for current pricing.
Renu Therapy FAQs
Is Renu Therapy a good cold plunge brand?
Renu is a premium brand with detailed published specs, several plunge formats and a five-year limited warranty on most models, making it a strong long-term option.
How cold do Renu plunges get?
Most models reach 37°F. The Cold Stoic 2.0 reaches 39°F.
Can Renu plunges heat water?
Yes, several models heat as well as cool. The Cold Stoic 3.0 and Aurelius reach 104°F, and the Vero reaches 100°F.
What warranty does Renu offer?
Most Renu plunges carry a five-year limited warranty. The Siberian Pro has a one-year warranty.
Does Renu ship for free?
Yes. Renu ships plunges and saunas free, with taxes calculated at checkout.
Buyers investing in a premium, long-term cold plunge who value detailed specs and a long warranty
Disclosure: InhouseHeal may earn a commission if you buy through links on this page. Our score is based on research of the brand's products, evidence, pricing and policies. How we review.
