Cold plunge · all in one
BlueCube C3 Cold Plunge
A handcrafted premium plunge with a 1 HP commercial chiller, ozone, and filtration holding a steady set temperature around the clock. Heavily configurable: this is the manufacturer's base/starting price, and loaded builds (larger tub, premium trim) run toward $30,000.
By the numbers
- Cooling
- built-in chiller
- Coldest temp
- 37 F
- Water care
- ozone, filtration
- Insulated
- yes
- Capacity
- 100 gal
- Material
- 316 stainless interior, insulated wood cabinet
- Est. annual electricity
- ~$420/yr
- Warranty
- 3 years
- Price
- $19,500
Strengths
- + Cooling: 10.0/10
- + Build & Insulation: 10.0/10
Watch-outs
- - Value: 2.0/10
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
Who should skip it
- · Buyers watching the electricity bill - its chiller runs on the costly end
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 B37 F - Reaches at least the 45 F range used in most cold-immersion protocols.
- +2Reaches ice-bath cold B37 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 C100 gal - Large enough for full-body immersion.
Value
2.0/10 · 20%Running cost - the chiller electricity brands rarely put on the box.
- 0Chiller running cost vs class A~$420/yr electricity (above class median (expensive per area)) - 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 B3-year - Two-year or longer warranty.
- +3Plug-and-play Bno manual ice - Runs without hauling and replacing ice.
What to know before buying
- · Commercial-grade built-in chiller aimed at heavy or facility use; manufacturer lists a minimum around 37 F.
- · Top-of-market pricing (around $19,500 at the base configuration, climbing toward $30,000 fully loaded), so it makes the most sense for commercial settings or very high-frequency use, not casual home buyers.
- · Designed for fast temperature recovery between users, which is why the chiller capacity and price are higher than home units.
- · Confirm the included filtration and sanitation package, since commercial use means many users in the same water.
- · Expect meaningful ongoing electricity cost given the commercial chiller size.
FAQ
- Why is the BlueCube C3 so expensive?
- The listed $19,500 is the manufacturer's base price; per the catalog it is heavily configurable, and loaded builds run toward $30,000. It is a handcrafted stainless plunge with a 1 HP commercial chiller, ozone, and filtration, holding a set temperature around 37 F.
- What does it cost to run each year?
- We estimate about $420 a year in chiller electricity, the highest in our cold-plunge set, and we score that under Value because it is the running cost brands rarely disclose. Its insulated wood cabinet helps offset that, since insulation lowers the power needed to hold temperature.
Last reviewed 2026-05-30. Scored under cold-plunge-v1.0. See the methodology. Informational only, not medical advice.