Cold
Cold plunge tubs and chillers, priced against the ice you would otherwise buy
Tubs, chillers and the horsepower needed to hold 45°F in an August garage — plus what a chest-freezer conversion actually costs once you price the safety work.
Cold plunge is the easiest category in home recovery to overspend in, because the physical product is simple and the pricing is not. A tub is a lined vessel with a lid. A chiller is a refrigeration loop. The gap between a $1,200 barrel and an $8,490 integrated system is filtration, finish, cooling speed and the willingness to never think about maintenance.
Our position, after pricing the whole market: the chiller is the only part where paying more reliably buys you something. Insulation quality and lid seal matter enormously and cost almost nothing. Ozone and app control are real conveniences but they are conveniences. Start by deciding whether you are an ice buyer or a chiller owner, because that single choice moves the budget by $2,000 to $5,000.
A note on the science, since every brand in this category oversells it: the evidence for cold water immersion is strongest for perceived recovery, mood, and soreness after exercise. It is weaker and more contested for hypertrophy — post-lift plunging may blunt some adaptation. None of the products below are medical devices and none of this is medical advice.
The decisions this section settles
- Do you need a chiller at all?
- If you plunge fewer than three times a week and live somewhere with cheap ice, a $3,000 insulated tub plus ice beats a $6,000 chilled system. Above three sessions a week, ice cost and hassle flip the maths within a year.
- How much horsepower?
- A 1/4 HP unit holds a well-insulated 100-gallon tub in a cool garage. Summer heat, thin insulation or a 130-gallon barrel push you to 1/2 HP. 1 HP is for commercial use or genuinely hot climates.
- All-in-one or tub plus chiller?
- Integrated units are tidier and quieter but fail as one unit. A separate chiller can be replaced for a few hundred dollars when it dies, which it eventually will.
- Where can it physically go?
- A filled 130-gallon plunge weighs roughly 1,300 lb on a footprint of about three square feet. That is fine on a slab, marginal on a wood-framed deck, and a conversation with a structural engineer on a second floor.
- How cold, and for how long?
- Most protocols in circulation sit between 45°F and 55°F for two to five minutes. Colder is not automatically better, and the evidence for extreme cold in untrained people is thin.
- What does it cost to run?
- Holding 45°F in an insulated tub is a surprisingly small load once it is down to temperature — the expensive part is the initial pull-down and any day you leave the lid off.
Guides in this section
Buying guide
The best cold plunge tubs of 2026, from $1,199 to $8,490
We priced every serious cold plunge in the US market against the ice you would otherwise buy. The chiller is the only part where paying more reliably buys you something.
Cost analysis
What a cold plunge costs to run: ice vs chiller, with the arithmetic
The break-even between buying ice and owning a chiller is about two and a half sessions a week. Here is the full calculation, plus what holding 45°F actually adds to your power bill.
Sizing guide
Cold plunge chiller sizing: how much horsepower you actually need
1/4, 1/3, 1/2 or 1 HP — sized against gallons, ambient temperature and insulation quality. Most buyers overspend on horsepower and underspend on the lid.
The planner
Get the Recovery Room Planner
A spreadsheet that sizes your heater in kW, prices the 240V circuit, calculates your chiller horsepower for your ambient temperature, and totals the installed cost before you order anything. Free, one email.