Renu Therapy is the Southern California workshop that has been building cold plunges since 2017, and it owns one position in the category outright: warranty depth. The flagship Cold Stoic 2.0 runs $9,499 to $10,019 depending on finish and light configuration ($9,499 base, verified 2026-08-14) and carries a 60-month tub warranty, the longest coverage of any chillered plunge we track (only the ice-only Ice Barrel 300 and its limited lifetime tub warranty run longer). The compact Vero starts at $7,200 (verified 2026-08-14) and carries a 5-year limited warranty of its own. If you are buying a premium tub on build quality and coverage, Renu is the strongest answer we track.
It is not the strongest answer for everyone. Renu publishes temperature floors of 39°F on the Cold Stoic 2.0 and 37°F on the Vero, so buyers chasing sub-freezing water should look at the Sun Home Cold Plunge Pro and its brand-confirmed 28°F floor instead. And The Plunge, at $8,490 (verified 2026-08-21), still holds the largest installed base and service network in the category. This deep dive covers both Renu tubs with full verified specs, the honest trade-offs, and who should buy which.
Quick answer
- Flagship buyer: the Renu Cold Stoic 2.0 at $9,499, horizontal full-body immersion with the longest tub warranty of any chillered plunge we track at 60 months.
- Compact-space buyer: the Renu Vero at $7,200, the same Southern California handcraft and a 5-year limited warranty in a 42-inch footprint.
- Service-network-first buyer: The Plunge at $8,490, not a Renu at all, but the category default if parts availability and installed base matter more to you than coverage length.
Who Renu Therapy actually is
Renu Therapy was founded in 2017, sells direct at renutherapy.com, and builds its tubs in the United States, with the Vero handcrafted to order in Southern California. Where Plunge scaled the category with a fiberglass tub and a big service operation, Renu went the other way: fewer models, premium materials, and warranty terms no chillered rival in our catalog matches (the ice-only Ice Barrel 300, with its limited lifetime tub warranty, is the lone exception). The Cold Stoic 2.0 pairs its 60-month tub coverage with a separate 36-month chiller warranty; the Vero carries a 5-year limited warranty on a $7,200 unit. For context, most premium rivals cover their tubs for 12 to 24 months.
The two products split cleanly. The Cold Stoic 2.0 is the ultra-premium horizontal flagship, the closest production unit we have seen to a custom onsen. The Vero is the compact seated plunge for buyers who want the same shop pedigree at $2,299 less. Both appear in our best cold plunges 2026 pillar, and you can see every Renu product we track on the Renu Therapy brand hub. If you are still mapping the category, start with our cold plunge buyers guide.
Renu at a glance
| Model | Verified price | Stated temp floor | Immersion style | Tub warranty | Power |
|---|---|---|---|---|---|
| Renu Cold Stoic 2.0 | $9,499 to $10,019, verified 2026-08-14 | 39°F (manufacturer-stated) | Horizontal, lie-down | 60 months (chiller 36) | 110V / 15A |
| Renu Vero | $7,200 to $7,500, verified 2026-08-14 | 37°F (manufacturer-stated) | Seated upright, fits to 6 ft 6 in | 5-year limited | 120V / 15A dedicated, built-in GFCI |
| The Plunge | $8,490 to $8,990, verified 2026-08-21 | 37°F | Horizontal, lie-down | 24 months | 110V / 15A |
| Inergize Spire Elite | $7,990 founder pricing, verified 2026-08-14 | 37°F | Reclined seat | 12 months | 120V / 15A |
| Sun Home Cold Plunge Pro | $13,999 sale ($14,599 regular), verified 2026-08-14 | 28°F (brand-confirmed) | Horizontal, lie-down | 12 months standard | 120V / 12A |
Cold Stoic 2.0: the flagship, spec by spec
The Cold Stoic 2.0 is an acrylic-tank horizontal plunge with optional cedar deck and lid trim, and it reads as architecture in a way no fiberglass tub does. The verified numbers: 78 by 36 by 30 inches, 110 gallons, 320 lb empty, and a chiller that holds the manufacturer-stated 39°F floor continuously. It runs on 110V at 15A, so no electrician is required. Pricing is $9,499 to $10,019 by finish and light configuration, custom finishes add $500 to $2,000, and white-glove delivery is priced separately (all verified 2026-08-14 against renutherapy.com product data).
The lie-down format matters more than it sounds. Horizontal full-body immersion means you submerge to the neck without the shoulder hunch of a barrel or the buoyancy games of a shallow seat, and for sessions past the 5-minute mark it is simply more comfortable. Combined with the 60-month tub warranty and 36-month chiller coverage, the Cold Stoic 2.0 is the reference premium pick in our catalog, scoring highest of any cold plunge we have reviewed.
Where the Cold Stoic 2.0 gives ground
It is the priciest Renu by a wide margin, and $1,009 over a base Plunge. The 320 lb empty weight means roughly 1,200 to 1,400 lb filled, fine on slabs and ground floors, but second-story installs need a structural sign-off first. Outdoor cedar trim needs annual re-treatment, roughly $30 to $60 in sealer and an hour or two of work. Renu's service network is smaller than Plunge's, so a warranty claim may take longer to resolve even though the coverage itself is deeper. The 39°F floor is plenty for typical 2 to 5 minute sessions (see our temperature and time targets breakdown), but sub-freezing chasers should look elsewhere. And the Cold Stoic lead time is not in our verified data, so confirm it before ordering.
Vero: the compact Renu
The Vero is Renu's answer to the buyer who wants the Cold Stoic pedigree without the price or the footprint. It is $7,200 cold only, or $7,500 with the Hot + Cold upgrade that runs the same unit up to 100°F for warm soaks (verified 2026-08-14). A 0.8 HP chiller with 1,080 watts of cooling holds the stated 37°F floor, and the whole system runs on a 120V, 15A dedicated circuit through a standard outlet with built-in GFCI.
The build detail reads like the bigger tub: 2 inches of foam insulation on tank and cover, a 50-micron top-loading filter plus an integrated ozone generator, marine-grade SeaDek decking, and touchscreen plus Wi-Fi app control. The exterior is 42 by 33 by 39 inches with a 30 by 18 by 20 inch interior and a 95-gallon fill, and Renu states it fits users up to 6 ft 6 in for an upright seated soak. Empty weight is just 129 lb, roughly 1,080 lb filled, which ground floors and garages handle without an engineering review. Renu quotes 58 dB of chiller noise from about 3 feet, ships in 6 to 8 weeks, and includes free curbside delivery in the contiguous US.
Where the Vero gives ground
This is a seated upright soak, deliberately not a lie-down tub; if full-supine immersion is the goal, the Cold Stoic 2.0 or The Plunge is the right format. The 0.8 HP chiller is modest next to 1 HP class units, and the 37°F floor will not satisfy anyone chasing benchmark cold. Every unit is handcrafted to order, so the 6 to 8 week lead time is structural, not a stock issue. Vero electricity cost is not in our verified data.
The warranty math the brand blogs will not run
Every cold plunge brand markets its warranty; none of them show you what a month of included tub coverage actually costs across the field. So we ran it: verified price divided by included tub warranty months, using base prices verified 2026-08-14 to 2026-08-21, math run 2026-08-22.
| Tub | Verified base price | Included tub warranty | Price per covered month |
|---|---|---|---|
| Renu Vero | $7,200 | 60 months | $120 |
| Renu Cold Stoic 2.0 | $9,499 | 60 months | $158 |
| The Plunge | $8,490 | 24 months | $354 |
| Inergize Spire Elite | $7,990 | 12 months | $666 |
| Inergize Spire Apex | $9,490 | 12 months | $791 |
| Sun Home Cold Plunge Pro | $13,999 | 12 months | $1,167 |
Read the caveats before you over-index on one column. Coverage length is not repair probability, chiller terms differ from tub terms (Renu covers the Cold Stoic chiller for 36 months, Plunge covers both tub and chiller for the same 24), and Sun Home sells 3 and 5-year extensions separately. But the direction of the table is unambiguous: on dollars per covered month, both Renu tubs cost less than half of every rival in this table. That is the concrete version of the warranty edge, and no competing brand blog can print this table without making Renu's case for it.
How Renu sits against the field
Against The Plunge. The Plunge at $8,490 to $8,990 (verified 2026-08-21) is the category default: standard-outlet plug-and-play like the Renu tubs, a 37°F floor, and the largest installed base and service network in the category, which also means better resale liquidity. Renu answers with materials, immersion comfort, and 60 months of tub coverage against 24. If you want the safest single purchase with the deepest service bench, buy the Plunge; our Plunge alternatives post covers that decision from the other direction.
Against the Inergize Spires.
The Spire Elite is the strongest aesthetic rival to Renu: thermotreated red cedar over a 316 marine-grade stainless interior, a reclined seat that keeps you neck-deep without floating, and heat to 104°F included, at $7,990 founder pricing against a $9,490 compare-at (verified 2026-08-14). Renu's counters are the warranty gap, 60 months versus 12, and lead time, 6 to 8 weeks on the Vero versus a 16-week preorder. The step-up Spire Apex at $9,490 (verified 2026-08-16) lands within $9 of a Cold Stoic 2.0 and answers with a manufacturer-stated 32°F floor, but the same 12-month warranty and a dedicated 20A circuit requirement.
Against the Sun Home Cold Plunge Pro.
This is the tub for the buyer Renu cannot serve: the one who wants actual ice. Sun Home confirmed a 28°F floor to us on 2026-08-05, with genuine floating ice in a 150-gallon medical-grade stainless tub, at $13,999 on sale from $14,599 (verified 2026-08-14). The trades run the other way: a 1-year standard warranty, and filters at $49 per 3-pack swapped every 2 to 4 weeks, roughly $212 to $425 a year. If you have never found a 39°F plunge insufficient, the Renu tubs deliver the premium experience at roughly half to two-thirds the money.
Verdicts by buyer type
- The warranty-first premium buyer: the Cold Stoic 2.0. 60-month tub coverage at $158 per covered month, horizontal immersion, and the best-looking tub in our catalog.
- The small-space or first-premium-tub buyer: the Vero. Same shop, 5-year limited warranty, 42-inch footprint, and the $300 Hot + Cold upgrade makes it a two-season unit.
- The service-network and resale buyer: The Plunge. Renu's coverage is longer on paper, but Plunge's installed base is the deeper safety net in practice.
- The sub-freezing chaser: the Sun Home Cold Plunge Pro at a 28°F brand-confirmed floor, or the Spire Apex at a stated 32°F. No Renu goes below 37°F.
- The budget buyer: neither Renu. Start with our best chillers under $2,500 roundup and test the habit first.
Bottom line
Renu Therapy is the warranty and materials play in the premium cold plunge tier, and the numbers back the positioning: 60-month tub coverage on both the $9,499 Cold Stoic 2.0 and the $7,200 Vero works out to less than half the cost per covered month of every rival in the warranty table above. The Cold Stoic 2.0 is the pick for horizontal immersion and room presence; the Vero is the pick for compact spaces and a lower entry price. Buyers who prioritize service-network depth should still default to The Plunge, and sub-freezing chasers need Sun Home or the Spire Apex. But for the buyer holding a premium tub for years, Renu is the strongest ownership case in the category.
Is Renu Therapy worth it over The Plunge?
It depends on what you buy on. The Cold Stoic 2.0 at $9,499 costs $1,009 more than an $8,490 Plunge but carries a 60-month tub warranty against 24 months, plus an acrylic tank with cedar trim. The Plunge counters with the largest service network in the category. Warranty-and-materials buyers go Renu; service-network buyers go Plunge.
How much does a Renu Therapy cold plunge cost?
Two price points, both verified 2026-08-14: the compact Vero runs $7,200 cold only or $7,500 with the Hot + Cold upgrade, and the flagship Cold Stoic 2.0 runs $9,499 to $10,019 depending on finish and light configuration. Custom finishes add $500 to $2,000, and white-glove delivery on the Cold Stoic is priced separately.
Do Renu cold plunges need an electrician?
Usually not. The Cold Stoic 2.0 runs on 110V at 15A, and the Vero runs on a 120V, 15A dedicated circuit through a standard 3-prong outlet with a built-in GFCI. Dedicated just means no freezer or space heater sharing the breaker. Most garages and patios already qualify, so install cost for most buyers is zero.
How cold do Renu cold plunges get?
Renu states a 39 degree F floor on the Cold Stoic 2.0 and 37 degrees F on the Vero, both held continuously by the chiller. Neither reaches sub-freezing: if you specifically want floating ice, the Sun Home Cold Plunge Pro runs a brand-confirmed 28 degree F floor at $13,999. For typical 2 to 5 minute sessions, 37 to 39 degrees is plenty cold.
How long does a Renu cold plunge take to ship?
The Vero is handcrafted to order in Southern California and ships in 6 to 8 weeks with free curbside delivery in the contiguous US. A Cold Stoic 2.0 lead time is not in our verified data, so confirm it with Renu in writing before ordering. Neither tub is an in-stock, ships-tomorrow purchase.
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