Cold plunge · all in one
Polar Monkeys Cyber Plunge
A marine-grade stainless plunge with a built-in heating and cooling chiller holding water as low as 32 F, with ozone and filtration.
8.1
Strong
Composite (0-10), cold-plunge-v1.0
Confidence: Verified
By the numbers
- Cooling
- built-in chiller
- Coldest temp
- 32 F
- Water care
- ozone, filtration
- Insulated
- yes
- Capacity
- 140 gal
- Material
- 316 marine-grade stainless steel
- Est. annual electricity
- ~$300/yr
- Warranty
- 2 years
- Price
- $15,690
Strengths
- + Cooling: 10.0/10
- + Build & Insulation: 10.0/10
Watch-outs
- No significant weaknesses flagged.
Who it is for
- · Anyone who wants cold water on demand without hauling and replacing ice
- · People who want low-maintenance, cleaner water between changes
How it scored
Cooling
10.0/10 · 30%Whether the unit actively chills, and how cold it gets. An ice-only tub is not a self-chilling plunge.
- +6Built-in chiller Apowered chiller included - Cools the water actively, with no need to buy or add ice.
- +2Reaches 45 F or colder B32 F - Reaches at least the 45 F range used in most cold-immersion protocols.
- +2Reaches ice-bath cold B32 F - Reaches 39 F or colder, true ice-bath territory.
Water Care
7.0/10 · 20%Ozone, UV, and filtration that keep the water clean between changes.
- +4Ozone sanitation Bozone - Ozone keeps the water clean between changes.
- +3Filtration / circulation Bfilter + pump - A circulating filter keeps debris out and water clear.
Build & Insulation
10.0/10 · 15%Insulation (holds temperature, lowers running cost) and full-immersion capacity.
- +6Insulated Binsulated shell/cover - Insulation holds temperature and lowers the chiller's running cost.
- +4Full-immersion capacity C140 gal - Large enough for full-body immersion.
Value
7.0/10 · 20%Running cost - the chiller electricity brands rarely put on the box.
- +5Chiller running cost vs class A~$300/yr electricity (below class median) - Estimated annual chiller electricity, scored against the chiller-unit median. The cost brands rarely disclose.
- +2Insulation lowers running cost Binsulated - Insulation reduces the electricity needed to hold temperature.
Practical
5.0/10 · 15%Warranty, electrical-safety listing, and plug-and-play convenience.
- +2Solid warranty B2-year - Two-year or longer warranty.
- +3Plug-and-play Bno manual ice - Runs without hauling and replacing ice.
What to know before buying
- · High-end all-in-one with a combined heating and cooling chiller that holds temperature without ice; manufacturer lists a minimum of 32 F, cold enough for near-freezing water.
- · At roughly $15,690 this sits well above typical home units, so weigh the price against the features you will actually use.
- · Marine-grade 316 stainless construction is a large part of the cost.
- · Includes ozone and filtration, which matter because you reuse the same water between sessions.
- · Budget for ongoing chiller electricity on top of the purchase price.
FAQ
- What makes the Cyber Plunge stand out in your scoring?
- It is a 316 marine-grade stainless tub with a built-in chiller that reaches as low as 32 F, which in our scoring is the coldest tier and full ice-bath cold. At 140 gallons it clears our full-immersion capacity threshold, and it adds ozone and filtration for water care.
- Does the large stainless tub make it expensive to run?
- We estimate about $300 a year in chiller electricity, which sits below the chiller-unit median in our set, and we credit its insulation for lowering the power needed to hold temperature. We score that running cost under Value because it is the figure brands rarely disclose.
Last reviewed 2026-05-30. Scored under cold-plunge-v1.0. See the methodology. Informational only, not medical advice.