Cold plunge · Review

Plunge All-In Gen 2 review

Last updated May 2026 · Verified against the manufacturer's product page

Plunge is the iconic home cold-plunge brand, and the All-In Gen 2 is the product most buyers picture when they imagine owning one. $6,990 on sale (MSRP $9,990), 105 gallons of capacity, a 37°F floor temperature, hard-sided premium construction, integrated ozone sanitation, and a smartphone app pulling data from ten onboard sensors. The Gen 2 isn't a redesign so much as a tightening of what the original did well, with a 31% faster cooling cycle as the headline upgrade.

What Gen 2 actually changed

The headline change is chiller performance. Plunge claims 31% faster cooling versus Gen 1, which matters most in two scenarios: the initial cooldown after a fresh fill (now around 4–6 hours from tap temperature to 37°F, depending on ambient conditions), and recovery after a heavy session that warmed the water a few degrees. Most owners don't notice either delta because the tub is effectively idle between uses. People who plunge multiple sessions per day will feel the difference.

The sensor count went from a smaller array on Gen 1 to ten integrated sensors on Gen 2, feeding the redesigned smartphone app. The app reports water temperature, filtration state, ozone cycle status, and use history. None of it is essential to plunging. All of it is useful for a daily user who wants the data trail.

Construction stayed hard-sided, the build quality stayed at the same level that made the original Plunge the category-defining product, and the cabinetry options expanded slightly. The Gen 2 is the Plunge for buyers who wanted the Plunge before, just refined.

What you actually get

The All-In is a 105-gallon hard-sided tub with an integrated chiller cabinet, rather than a separate tub-plus-chiller assembly. The whole unit ships as one piece. Capacity accommodates users up to 6'9" without the awkward folded-knee position cheaper plunges force on taller users. Internal volume sits at the comfortable side of large enough for a full immersion without being so deep that water management becomes a chore.

The ozone sanitation system runs continuously, cycling the full 105 gallons every 15 minutes. Filter changes are weekly (the filter sock pulls out without tools), water changes drop to monthly under normal use, and the chiller and pump are inside a sealed cabinet that doesn't ask anything from the owner besides occasional dust-off.

Free in-home delivery is the unsung feature on a 250+ lb piece of equipment. Most premium cold plunges arrive curbside and leave you to organize the lift. Plunge brings the unit into your install location at no extra charge in most US regions. For solo buyers without a friend ready on delivery day, this changes the install experience from logistics puzzle to scheduled appointment.

Installation reality

Electrical: the All-In runs on a 120V, 15-amp circuit, and Plunge includes a built-in 7-foot GFCI cord. This is straightforward residential wiring. Verify the circuit isn't shared with other heavy-draw appliances before ordering; running a microwave on the same breaker will trip it during initial cooldown.

Surface: the tub needs a level pad. Concrete works best; engineered pavers work; bare grass does not. The unit weighs over 1,000 lbs once filled, and an uneven base will stress the cabinet seals and shorten the product life.

Drainage: monthly water changes pull 105 gallons. Plan for a downhill grade, a deck drain, or a basement floor drain. Don't put the tub somewhere the water has nowhere to go.

Site selection often constrains buyers more than the install itself does. A concrete pad in a covered patio, a basement utility area with a floor drain, or a garage corner with the right outlet are the three configurations that work without modification.

How it performs

The Gen 2 chiller holds setpoint within tight tolerance. Once stabilized, the water sits within a degree of target across normal residential ambient ranges. Cooldown from a fresh fill takes 4–6 hours; recovery after a heavy session runs 15–30 minutes. Both numbers are faster than Gen 1 and faster than any competitor at the same price point.

Daily-use friction is essentially zero. Open the lid, get in, get out, close the lid. The ozone keeps water clarity high enough that maintenance becomes a background concern rather than a routine. Sessions can be scheduled around whatever the user's day looks like; the tub is always ready.

Build quality is the most visible justification of the price tag. The cabinet construction, the lid hardware, the controls, and the touch interface all feel deliberately designed. The All-In has the polish that buyers shopping at $7,000 expect and that the inflatable mid-tier products can't quite reach.

The honest case against

$6,990 is a lot of money for a tub of cold water, and the Inergize Elite Tub at $3,290 gets close enough on the spec sheet to deserve serious consideration from anyone shopping the Plunge. The Inergize hits the same 37°F floor, runs on the same 120V/15A circuit, includes a heater function the All-In doesn't offer, and adds ozone sanitation at a comparable rate. The Inergize gives up hard-sided construction, the smartphone app polish, the free white-glove delivery, and some chiller speed. Whether those gaps are worth $3,700 is the real buying question.

The 1-year warranty is the other point worth pausing on. Sun Home offers a 7-year warranty on their saunas at a similar price point. Plunge's 1-year figure isn't out of line with most cold plunges, but it's worth knowing that paying flagship money does not buy flagship warranty terms.

Who this is for

Buyers who want the most polished home cold plunge available and have the budget to clear $7,000 without flinching. The All-In Gen 2 rewards daily use with the lowest-friction experience in the category, and the build quality shows up every time you open the lid. Couples or households where two or more users will share the tub get the most value because the cost amortizes across more sessions.

It also fits buyers building a permanent recovery setup who care about cabinet aesthetics. The Inergize and other mid-tier products work, but they read as gym equipment. The All-In reads as furniture.

Who should skip it

• Anyone weighing the spec sheet against the price. The Inergize Elite Tub at $3,290 will satisfy most buyers who land on the Plunge because of the temperature spec. Read the Inergize review before committing.
• Renters and short-term residents. A 250+ lb hard-sided tub is not a moveable purchase. If you may relocate inside 24 months, an inflatable mid-tier product makes more sense.
• Casual users plunging less than 3 times per week. The flagship experience doesn't get used enough to earn its keep at low frequency.
• Anyone needing a hot mode too. The All-In is cold-only. For single-unit contrast therapy, the Inergize Elite Tub heats to 104°F.

The bottom line

The Plunge All-In Gen 2 is the most polished home cold plunge in production, and it justifies its price with build quality, white-glove delivery, and the fastest chiller in the category. The question every buyer should answer honestly before clicking purchase: would you still want this if the Inergize Elite Tub didn't exist? If yes, the All-In is the right call. If no, save $3,700 and buy the Inergize.

For category context, see Best cold plunges under $5,000, where the All-In Gen 2 is the named worth-the-stretch flagship pick. The Inergize Elite Tub review covers the mid-tier alternative this review keeps referencing. And the cold plunge vs ice bath comparison covers the case for staying on ice instead of buying any chiller-equipped tub.