How to Choose a Cold Plunge Tub
Before spending money on a cold plunge setup, ask yourself four questions: How often will you use it? Do you want to maintain precise temperatures year-round? How much space do you have? What's your budget ceiling? The answers will point you to one of three categories: DIY/budget, mid-range dedicated tub, or premium chiller unit.
Budget Options: $150–600
Rubbermaid Structural Foam Stock Tank (100 gal): The classic budget cold plunge. At ~$150–200, it holds enough water for a full-body immersion and is remarkably durable. You'll need bags of ice (~30–50 lbs per session) or a water chiller to maintain temperature. Works best in cool climates where ambient temps help keep water cold.
Galvanized steel stock tank (100–150 gal): A step up aesthetically. Holds cold longer than plastic, looks great outdoors, and costs $200–400. The steel can get slippery — add a rubber mat to the bottom.
Inflatable cold plunge tubs: Brands like IcePod and RENU Therapy offer insulated inflatable tubs for $300–600. Portable and easier to drain/store, but less durable than hard-sided options.
Mid-Range Dedicated Tubs: $1,000–3,000
Ice Barrel: A vertical barrel design that uses less water (~105 gallons) and positions you upright — excellent for small spaces. Comes with a cover and drainage valve. At ~$1,200, it's well-built and maintains temperature longer than open stock tanks. No chiller included.
Plunge (without chiller): Plunge makes high-quality fiberglass tubs with excellent insulation. Their base model starts around $1,000. Easy entry, beautiful design, and durable. You'll still need ice or a separate chiller to hit target temperatures in warm weather.
Cold Tub Pro: A Canadian-made acrylic tub with great insulation and ergonomic entry. Priced around $1,500–2,200 depending on size.
Premium Chiller Units: $3,000–8,000+
Premium cold plunge units come with built-in filtration and temperature-controlled chillers that maintain 37–60°F year-round — no ice required, ever.
Plunge Pro: One of the most popular premium units at ~$4,990. The all-in-one filtration, ozone sanitation, and chiller system means near-zero maintenance. Holds 99 gallons and chills to 39°F. The best option for serious daily practitioners.
Nordic Wave Viking: Commercial-grade quality at ~$4,500. Stainless interior, powerful chiller, UV and ozone sanitation. Heavy and requires a 240V outlet but is nearly spa-quality.
Sun Home Luminar Cold Plunge: ~$5,990 with a filtration system and chiller. Premium aesthetics, great customer service.
DIY Cold Plunge: The Chest Freezer Option
The most popular budget hack among serious cold plungers: convert a chest freezer into a cold plunge. A 15–20 cubic foot chest freezer ($400–700) can be converted with a waterproof liner and pump for a total cost of $600–1,000. It maintains exact temperatures without any ice and is the closest thing to a premium unit at a fraction of the cost. See our DIY cold plunge guide for detailed instructions.