How much does it cost to run a cold plunge?

It depends on the chiller's power, how well the tub is insulated, your climate, and local electricity rates. Our estimates for these self-chilling units range from roughly $150 to $420 a year. Better insulation and a right-sized chiller lower the bill, which is why the cheapest-to-run unit is not always the cheapest to buy.

Cold plunge · Best-of

Best Cold Plunge for Low Running Cost

The cheapest plunge to run is usually a well-insulated unit with a right-sized chiller, not the biggest cabinet. Running cost is an estimate from chiller power and insulation, so treat it as a guide to relative cost, not an exact bill.

The sticker price is only half the cost of a self-chilling plunge; the chiller's electricity is the part brands leave off the box. This list keeps units with a built-in chiller and ranks them by our estimated annual running cost, lowest first, so you can see which plunges are cheapest to keep cold over a year.

How we score: We keep self-chilling units and rank by estimated annual chiller electricity, lowest first.

15.4
Penguin Chillers Cold Therapy Chiller
A standalone 3/4 HP water chiller for DIY cold-plunge builds - no tub included, but the cheapest path to real cooling.
- Chiller: yes
- Min temp: 37 F
- Running cost/yr: ~$150
- Price: $1,950
27.8
Hydragun Supertub Cold Plunge
An inflatable all-in-one plunge with a built-in chiller, filtration, and ozone - one of the cheapest self-chilling options.
- Chiller: yes
- Min temp: 34 F
- Running cost/yr: ~$200
- Price: $2,999
38.1
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.
- Chiller: yes
- Min temp: 32 F
- Running cost/yr: ~$300
- Price: $15,690
47.0
Edge Tub Elite
A portable insulated tub bundled with a 1 HP Wi-Fi chiller that cools to 37 F or heats to 105 F, with micron filtration. Note: Edge Theory Labs has gone out of business - its own homepage now states so and points owners to a third party for replacement chillers. Treat this as a discontinued unit with no factory warranty or parts support; the price shown is the last-known figure.
- Chiller: yes
- Min temp: 37 F
- Running cost/yr: ~$300
- Price: $4,990
58.4
Inergize Cold Plunge Pro
A compact soft-sided tub paired with a chiller that cools to 37 F and heats to 105 F, with four-way filtration plus ozone and UV.
- Chiller: yes
- Min temp: 37 F
- Running cost/yr: ~$330
- Price: $3,290
68.5
Renu Therapy Cold Stoic 2.0
A heavily insulated plunge with an integrated chiller, three-stage filtration, and ozone plus UV, reaching about 36 F.
- Chiller: yes
- Min temp: 36 F
- Running cost/yr: ~$340
- Price: $9,499
77.9
Sun Home Cold Plunge Pro
Encased stainless plunge with a 1 HP built-in chiller that drives water to 32 F, plus ozone, UV, and filtration.
- Chiller: yes
- Min temp: 32 F
- Running cost/yr: ~$360
- Price: $13,799
87.3
Plunge All-In
An acrylic cold plunge with a built-in chiller, ozone, and filtration that holds water near 37 F without ice.
- Chiller: yes
- Min temp: 37 F
- Running cost/yr: ~$360
- Price: $8,490
97.1
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.
- Chiller: yes
- Min temp: 37 F
- Running cost/yr: ~$420
- Price: $19,500

FAQ

How much does it cost to run a cold plunge?: It depends on the chiller's power, how well the tub is insulated, your climate, and local electricity rates. Our estimates for these self-chilling units range from roughly $150 to $420 a year. Better insulation and a right-sized chiller lower the bill, which is why the cheapest-to-run unit is not always the cheapest to buy.