Plunge All-In Review (2026)
Our verdict
The Plunge All-In is the single device that does what most cold plunge buyers actually want: it gets genuinely cold, it can also heat, and the chiller holds your set temperature with no ice. Range is roughly 39°F to 104°F, the filtration handles daily use with ozone and UV, and the app makes scheduling and temperature changes simple. It is a premium spend that removes the most common excuses not to plunge.
Quick specs
- Brand
- Plunge
- Standout
- Best hot + cold all-in-one
- Key spec
- Hot + cold · 39 to 104°F
- Rating
- 4.5 / 5
Pros
- True hot and cold range, roughly 39 to 104°F
- Automatic temperature hold with no ice needed
- Strong filtration for daily use
Cons
- Premium price
- Needs a dedicated spot and power
Design & build
Acrylic interior shell, exterior cabinet panels, integrated chiller and heater unit, and built-in ozone plus UV filtration. The lid is insulated; the seat depth supports lay-back rather than upright posture.
The body is freestanding and sized for a single user lay-back. The chiller and filtration unit lives in the back panel, so unlike split-system designs there is no separate equipment cabinet to find space for.
Setup
Plan a level spot indoors or under cover with a standard 110V outlet within reach. Allow airflow clearance around the back panel where the chiller exhausts. First-fill from a garden hose takes about 30 minutes; the initial cool-down from tap-water temperature to a 50°F setpoint takes several hours.
Plunge sends detailed install documentation including pad requirements, electrical specifications, and ozone setup. Follow it; the system is designed to be plug-in but the placement and clearance matter for both performance and component longevity.
Performance
Owners report set-and-forget temperature hold once the unit is dialed in: the chiller pulls water back to setpoint quickly after a session and the ozone/UV combination keeps water clear enough for daily use across multi-person households.
The hot side genuinely works: 104°F is the upper limit, which is hot-tub territory, useful for cold-and-hot contrast or a warm soak. Transitions between hot and cold modes take a few hours; this is not a tub you switch on demand, but you can hold either mode steadily.
Temperature & insulation
Verified range is roughly 39°F to 104°F. Most owners settle the cold setpoint at 45 to 50°F for daily plunging and the warm setpoint at 100 to 104°F for soaking. The chiller has enough headroom to hold setpoint through repeated sessions in a warm room.
Maintenance
Routine: rinse the filter weekly, swap the filter cartridge every 2 to 4 months depending on use, run the brand's recommended sanitizer schedule, and refill the tub every 1 to 3 months depending on user count. The ozone and UV systems reduce sanitizer load substantially but do not eliminate it.
Warranty & support
Plunge ships with a multi-year warranty on the chiller, structural components, and accessories (current terms on the product page). Support is U.S.-based, and parts are stocked, which matters because chillers are the component most likely to need service in year 3 to 5.
Real customer reviews
“Love the unit itself and the convenience of hot-and-cold in one tub, though I wish customer service was a little more responsive.”
“Built-in seat is excellent, and the depth makes it easy to fully submerge without curling up.”
Who should buy it
People who want one tidy unit for both hot and cold, and who plan to use it regularly.
Who should skip it
Buyers who only want cold and don't need heat mode (the cold-only Plunge is cheaper), anyone who plunges occasionally rather than regularly (an Ice Barrel is much cheaper and adequate), and renters who cannot dedicate a permanent spot for the unit.
Alternatives
- The Plunge
Original cold-only chiller tub from Plunge
- Sun Home Cold Plunge Pro
Coldest luxury plunge
- Ice Barrel 500
Best compact upright