Renu Therapy Review 2026: Cold Stoic, Vero, Aurelius & Siberian Pro Compared

By IceColdTubs · Updated July 18, 2026

Quick Answer: Renu Therapy makes handcrafted, heavily insulated cold plunges from $7,200 to $14,099 — excellent builds that are hard to justify on price alone. Every tub is built to order in Southern California, wrapped in 2-4 inches of HD insulation, purified by ozone plus multi-stage filtration, and covered by a 5-year limited body warranty on every model except the Siberian Pro. The lineup runs Vero $7,200, Cold Stoic 2.0 $9,499, Aurelius $9,999, Cold Stoic 3.0 $11,399, and Siberian Pro $14,099, per Renu’s July 2026 listings. But Garage Gym Reviews scored the Cold Stoic 5/5 for durability and just 2.5/5 for value, noting it costs nearly double The Plunge with less legroom — so buy Renu for the insulation, the warranty and the finish, not for a colder number.

Renu Therapy sits in the awkward, interesting middle of the cold plunge market: well above the budget cold plunge tier, clearly below handbuilt stainless like BlueCube, and priced within a few hundred dollars of the brand most buyers cross-shop it against. After working through Renu’s full 2026 lineup, published specifications and independent tester reports, here is what each model actually is, which one fits, and where the money stops making sense.

New to the category? Start with our best cold plunge tubs overview. Want the same always-cold water for far less? Our cold plunge tub with chiller guide is the cheaper comparison set.

Affiliate note: Renu Therapy sells direct, and the prices below are starting prices that change with decking, color and add-on options. We link to live listings so you can confirm current pricing before you buy.

The Renu Therapy lineup at a glance (2026)

Cold plunge gear that arrives on time matters when you’re mid-build — try Prime free for 30 days and get the covers, thermometers and filters here in two days. For matched chiller sizing if you’d rather build your own system, see our best cold plunge chiller guide.

Renu Therapy by the numbers

• Every tub is handcrafted to order in Southern California. Renu states the Cold Stoic 3.0 is “thoughtfully designed and handcrafted” in SoCal and ships in 4-6 weeks — testers at Garage Gym Reviews reported 6-10 week lead times during busy periods. This is a made-to-order product, not stock inventory.
• Insulation is the real headline, not the chiller. Renu specs 4 inches of HD insulation on the Cold Stoic 2.0, 3.0 and Aurelius (2 inches on the compact Vero, 3 on the Siberian Pro). Reviewers found the water stayed below 60°F a full 24 hours after being unplugged — that is what keeps running costs down between sessions.
• The entry chiller is genuinely small. The Cold Stoic 2.0 runs a 0.25 HP chiller rated to 39°F, and Garage Gym Reviews’ tester measured roughly one hour per degree of temperature change. The 3.0 and Aurelius double that to 0.5 HP; the Vero and Siberian Pro use 0.8 HP.
• Water volume is modest for the footprint. Renu lists the Cold Stoic 2.0 and 3.0 at 91-104 US gallons in a 40 x 25 x 31-inch interior tank, and the Siberian Pro at 95-125 gallons in a 48 x 24 x 30-inch tank. The 70-inch exterior length includes the equipment bay, so plan for less legroom than the outside dimension suggests.
• Everything runs on a normal outlet. Every model is specified for a dedicated 120V / 15A circuit with a 12-foot GFCI cord — no 240V electrician visit, which is a real advantage over some premium rivals.
• The warranty splits body from chiller. Renu covers 5 years on the tub body and 1 year on the chiller across the lineup, with exclusions for poor water chemistry, neglected filters, freezing and power outages. The Siberian Pro is the exception at 1 year — worth knowing before you spend $14,099.
• Filled weight is substantial. Renu lists roughly 1,145 lbs filled for the Cold Stoic 2.0/3.0, 1,130 lbs for the Aurelius and about 1,500 lbs for the Siberian Pro. Check your deck or floor structure before ordering, not after.
• The cold itself is free. A 2016 randomized trial in PLOS ONE (Buijze et al., 3,018 participants) found that finishing a daily shower with 30-90 seconds of cold water was associated with a 29% reduction in self-reported sick leave. The physiology comes from water temperature — not from the price of the tub holding it. That is the honest frame for any five-figure plunge.

Model by model

Vero — $7,200, the small-space entry

The Vero is Renu’s upright, and the most interesting value in the lineup. It packs a 0.8 HP chiller — the largest Renu fits, matching the $14,099 Siberian Pro — into a 42 x 33-inch footprint, heats to 100°F as well as chilling to 37°F, and uses XL filtration with ozone, touchscreen and app control, and marine-grade SeaDek decking. At 129 lbs empty, it is also the only Renu tub one person can reasonably reposition.

The trade-off is insulation and posture: 2 inches of HD insulation rather than 4, and an upright seated position rather than a lie-back soak. If you plunge standing or seated anyway — as most people do in an ice barrel style tub — the Vero gives you the strongest chiller in the lineup for the least money.

Cold Stoic 2.0 — $9,499, the one to think hardest about

The Cold Stoic 2.0 is Renu’s best-known product and the model most reviews mean when they say “Renu Therapy.” It is cold-only to 39°F, built on a 70 x 33 x 35-inch shell with 4 inches of HD insulation, HDPE and wood decking, standard filtration plus ozone, and built-in controls rather than an app.

It is also where the value question bites. Garage Gym Reviews rated it 5/5 for durability and 2.5/5 for value at roughly $9,700, noting it costs nearly double The Plunge (~$5,000 at the time of their test) while offering less interior legroom despite a larger footprint. The 0.25 HP chiller is the weakest in the lineup and the slowest to respond. If you are set on Renu, the honest recommendation is to look at the Vero below it or the 3.0 above it rather than stopping here.

Aurelius — $9,999, the wide one

The Aurelius trades length for width: a 50.75-inch wide exterior on a lower 29.75-inch profile, with a 62.5 x 26.75 x 26-inch interior tank. It runs 37-104°F on a 0.5 HP chiller with dual-stage filtration, ozone, composite decking, and touchscreen plus app control. This is the model for larger bodies and anyone who felt boxed in by the Cold Stoic’s 25-inch-wide tank — and, at 26 inches deep, the easiest to step into.

Cold Stoic 3.0 — $11,399, the best all-rounder

The Cold Stoic 3.0 is the 2.0 done properly. Same 70 x 33 x 35-inch shell and 4 inches of insulation, but with a 0.5 HP chiller, a 37-104°F range so one tub covers both cold plunging and warm contrast work, dual-stage filtration (external quick-swap plus internal high-capacity filter) with integrated ozone, and touchscreen and app control. Renu quotes 91-104 gallons and a 4-6 week build time.

If you want contrast therapy without buying two vessels, this is the Renu to buy. The extra $1,900 over the 2.0 buys heating, double the chiller capacity and better filtration — a far better use of money than the step from Vero to 2.0.

Siberian Pro — $14,099, the commercial-scale outlier

The Siberian Pro is an 80-inch tub with 95-125 gallons, a 0.8 HP chiller to 37°F, XL filtration with ozone, and roughly 1,500 lbs filled weight. It is the one Renu built for scale rather than for a garage. Two caveats: it is cold-only, and it carries a 1-year warranty where the rest of the lineup gets 5. At this price, look hard at commercial cold plunge options and at BlueCube, whose C1 starts at $16,500 with a 15-year tub warranty.

Who Renu Therapy is worth it for

Buy it if the tub lives outdoors permanently. Four inches of HD insulation and powder-coated walls are exactly what a year-round outdoor install needs, and the reported sub-60°F water 24 hours after unplugging is the practical proof. Renu is engineered around heat retention in a way plastic shells are not.

Buy it if you want one vessel for hot and cold. The Cold Stoic 3.0, Aurelius and Vero all heat as well as chill, which removes the need for a separate hot tub or a sauna and plunge combo budget.

Buy it if the 5-year body warranty matters to you. Most of the mid-premium field covers 1-3 years. Renu’s 5-year limited body coverage — with a 1-year chiller term — is meaningfully longer, and it is the strongest argument for the price.

Skip it if you just want cold water. The temperature you need is available for a third of the money, and the research does not reward going colder.

Cheaper ways to get the same water temperature

Integrated chiller tub around $3,000-6,000

The Desert Plunge (~$3,199) and similar all-in-one chiller tubs deliver the same always-cold, filtered water without the handcrafted finish. If your goal is a daily plunge rather than a showpiece, this is the tier that gets you there.

Build your own — insulated tub plus standalone chiller

A Penguin Cold Therapy Chiller ($1,949.99) cools a tub as large as 150 gallons to 37°F on 7,500 BTU/hr, per Penguin’s specs. Bolt one to any insulated shell or stock tank and you have Renu water temperature for well under half the price — see our Penguin Chillers review and best cold plunge chiller sizing guide.

Skip the chiller entirely

The Ice Barrel ($1,199.99) and insulated inflatables get you plunging for four figures or less; you just add ice. See our Ice Barrel review and best budget cold plunge guide, and our best ice bath tubs roundup for the full range.

How to decide

1. Decide whether you need heat. If contrast therapy is part of your protocol, only the Vero, Aurelius and Cold Stoic 3.0 qualify — the 2.0 and Siberian Pro are cold-only. This single question removes half the lineup.

2. Measure your body, not the tub’s exterior. The Cold Stoic’s 40 x 25-inch interior tank sits inside a 70-inch exterior because the equipment bay eats the difference. Taller and broader buyers should look at the Aurelius’ wider tank or the Siberian Pro’s 48-inch length.

3. Check the floor before you order. At 1,145-1,500 lbs filled, a Renu tub is a structural load. Confirm your deck, slab or garage floor first — it is a made-to-order product you cannot casually return.

4. Weigh the 2.0 against its neighbors. At $9,499 with a 0.25 HP cold-only chiller, the Cold Stoic 2.0 is squeezed by the $7,200 Vero (bigger chiller, adds heating) below it and the $11,399 3.0 (bigger chiller, adds heating and dual-stage filtration) above it.

5. Order a season early, and cover it. With 4-6 week builds — up to 10 in peak season — plan ahead, and fit a cold plunge cover to cut chiller runtime and keep debris out between sessions.

The bottom line

Renu Therapy builds some of the best-insulated, best-warrantied cold plunges you can buy — and charges accordingly. Handcrafted in Southern California with 4 inches of HD insulation, ozone and multi-stage filtration, 120V/15A simplicity and a 5-year limited body warranty, the lineup is genuinely well made. The Cold Stoic 3.0 ($11,399) is the model to buy: heating to 104°F, a 0.5 HP chiller and dual-stage filtration make it the complete hot-and-cold vessel. The Vero ($7,200) is the smart value pick with the lineup’s biggest chiller in the smallest footprint. Be cautious with the Cold Stoic 2.0 ($9,499) — independent testers scored it 2.5/5 on value — and note the Siberian Pro’s 1-year warranty at $14,099. And remember what a five-figure tub does not buy you: 37°F water is available for around $3,000 from an integrated chiller tub, or under $2,000 from a standalone chiller on a shell you already own. Buy Renu for the craftsmanship and the warranty — never for a colder number.