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Haven & Plunge

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Cold Plunge Benefits: What the Research Shows

Illustrative photo of cold water immersion, not the exact Plunge modelBest Overall

Illustrative photo of this product type, not the exact Plunge model. Photo: Unsplash.

Plunge

The Plunge: Original Cold Plunge Tub

Manufacturer-reported rating

A 105-gallon integrated-chiller cold plunge that cools to 37°F, with app-based temperature control and ozone/chlorine filtration.

Capacity
1 person (fits users up to 6'8")
Installation
indoor / outdoor
Dimensions
66-5/8"L x 31-1/2"W x 26"H; 105-gallon capacity
Power
Dedicated 120V/15A circuit for the chiller

We may earn a commission if you purchase through this link, at no extra cost to you. Price and availability are set by Plunge and subject to change.Information last checked October 11, 2026.

The Plunge: Original Cold Plunge Tub

$8,490

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Who it may suit

  • Frequent, multi-weekly cold plunge users
  • Buyers wanting the most-reviewed integrated-chiller system researched

Key Specifications

Chiller
Cools to 37°F, 8-10°F per hour
Capacity
105 gallons; fits users up to 6'8"
Shell
Acrylic/fiberglass
Filtration
Ozone plus chlorine/non-chlorine filtration, 6-filter starter kit included

Key Features

  • App-based temperature control
  • Cools to 37°F at 8-10°F per hour
  • Ozone and chemical filtration system
  • Free first-floor delivery and debris removal (per manufacturer)

Installation

Indoor or outdoor; requires a dedicated 120V/15A circuit near the unit

Warranty

Warranty terms: check manufacturer.

What the listing said when we checked it on Oct 11, 2026: 1-year limited warranty

See how the The Plunge: Original Cold Plunge Tub stacks up against alternatives in our Best Cold Plunges of 2026 comparison.

Pros

  • + Highest manufacturer-reported review count among the cold plunges researched for this site (872 reviews, 4.8/5)
  • + App-controlled temperature
  • + Quieter Gen 2 chiller per manufacturer's own comparison

Cons

  • − Only a 1-year warranty at this price point
  • − Requires a dedicated 120V/15A circuit

Our Take on the The Plunge: Original Cold Plunge Tub

By

Short answer: The Plunge is a 105-gallon acrylic and fiberglass tub with an integrated chiller that cools to 37°F, priced at $8,490. It is a laydown tub with app control and a published cooling rate. The warranty is 1 year, which is short at this price.

How fast does it cool?

The maker states 8-10°F per hour. Run the numbers from 70°F tap water down to 37°F: that is 33°F, or about 3.3 to 4.1 hours. To reach a milder 50°F takes about 2 to 2.5 hours. After that the chiller holds the temperature, so it is ready when you are.

What does it need electrically?

A dedicated 120V/15A circuit near the unit. “Dedicated” means nothing else shares the breaker. If the nearest outlet is on a circuit with other loads, budget for an electrician. Outdoors, the outlet should be GFCI-protected.

Where does it go?

It measures 66⅝” long, 31½” wide, and 26” tall, about 14.6 sq ft. It fits users up to 6 ft 8 in. The 105 gallons of water weigh about 876 lbs, plus the unit and you. The maker offers free first-floor delivery and debris removal. Upper floors are your problem to solve.

Run the numbers on the warranty

One year, limited, on an $8,490 product. Several competitors here offer 5 years on the tub. Ask Plunge what an out-of-warranty chiller repair costs and whether an extended plan is available.

About the rating

The 4.8 from 872 reviews is reported by the manufacturer on its own site. It is the highest review count among the cold plunges we researched.

You get, you give up

You get ozone plus chemical filtration and a 6-filter starter kit. You give up heating: this model is cold-only in our data. You also give up warranty length.

How it compares

The Nordic Wave Viking Premier costs $1,500 less, heats as well as cools, and has a 5-year tub warranty, but you sit upright. The Renu Therapy Cold Stoic 2.0 costs $9,499 with a 5-year warranty. Our button goes to Plunge’s product page. See Cold Plunge Warranties Compared.

Not medical advice.This page is general product information. Heat and cold exposure aren't safe for everyone. Talk to a physician before starting a sauna or cold plunge routine, particularly if you are pregnant or have a heart, blood pressure, or circulation condition. See our Editorial Policy.

The Plunge: Original Cold Plunge Tub head to head

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Alternatives to Consider

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Frequently Asked Questions

How cold should a cold plunge be?

Most home cold plunge systems are used well below room temperature; check your unit's manual for its supported range and always ease into cold exposure.

Do I need a chiller, or is ice enough?

Ice-based tubs are more affordable and simpler but require manual ice runs; chiller-equipped systems maintain temperature automatically with less day-to-day effort.

Can a cold plunge go outdoors in winter?

Many outdoor-rated units can, but check the manufacturer's freeze-protection guidance for your climate before leaving a plunge outside year-round.