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Head-to-head buyer guide

The Plunge vs Renu Therapy Cold Stoic 2.0

Specs, prices, editor verdict, and who should buy which, compared side by side.

By Ryan · Founder
Updated Sep 30, 2026

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Quick verdict

The Plunge (premium, $8,490 to $8,990) vs Renu Therapy Cold Stoic 2.0 (ultra premium, $9,499 to $10,019). Editor pick: Renu Therapy Cold Stoic 2.0 (Plunge is $1,019 cheaper).

Compared on 10 shared specs · editor scores 8.5 vs 9.1 · same category (cold plunge).

The Plunge fiberglass cold plunge tub with integrated chiller
Plunge

The Plunge

The cold plunge that became the default - chillered, plug-and-play, with a 1 year warranty on both tub and chiller.

PRICE
$8,490 to $8,990
SCORE
8.5 / 10
EDITOR'S PICK
Renu Therapy Cold Stoic 2.0 cold plunge
Renu Therapy

Cold Stoic 2.0

A horizontal plunge that chills to a manufacturer-stated 39°F and holds it forever - the closest production unit to a custom onsen.

PRICE
$9,499 to $10,019
SCORE
9.1 / 10
View at Renu Therapy →
The verdict

Renu Therapy Cold Stoic 2.0 wins on editor score (9.1 vs 8.5). See the per-buyer recommendations below. Winners on score don't always win on fit.

Side-by-side specs

SpecThe PlungeRenu Therapy Cold Stoic 2.0
price$8,490 to $8,990$9,499 to $10,019
coolingchillerchiller
min temp f3739
capacity1-person1-person
dimensions66 5/8″ × 31 1/2″ × 26″70″ × 33″ × 35″
water gallons10595
weight lb144365
power120V / 15A dedicated circuit120V / 15A
constructionacrylic and fiberglassplastic tub (Renu warranty class); breath deck in California Redwood, Pacific Cedar, Black Plastic or Brown Plastic
tub warranty months1260
chiller warranty months1212

Who should buy which

Pick The Plunge if

Buyers who want a chillered cold plunge as one purchase: a 110V plug-and-play tub with 1 year coverage on both tub and chiller.

Skip if

You want sub-37°F temperatures, a 2-person tub, or premium cedar/metal aesthetics - see Renu Therapy or Morozko Forge.

Pick the Renu Therapy Cold Stoic 2.0 if

Premium-aesthetics buyers who want the longest warranty in the category and a tub that reads as architecture.

Skip if

You're budget-constrained, want apartment-friendly install, or don't care about premium materials.

Go deeper

FULL REVIEW
Read The Plunge review →
FULL REVIEW
Read the Renu Therapy Cold Stoic 2.0 review →

Frequently asked

Which is better, The Plunge or the Renu Therapy Cold Stoic 2.0?

On our editor scoring the Renu Therapy Cold Stoic 2.0 edges it at 9.1/10. Both are strong; the right pick depends on your use case, which the verdict and spec table above break down.

How much do they cost?

The Plunge: $8,490 to $8,990. Renu Therapy Cold Stoic 2.0: $9,499 to $10,019. Prices are verified against the manufacturer; check the live links for current pricing.

Who should buy which one?

The Plunge: Buyers who want a chillered cold plunge as one purchase: a 110V plug-and-play tub with 1 year coverage on both tub and chiller. Renu Therapy Cold Stoic 2.0: Premium-aesthetics buyers who want the longest warranty in the category and a tub that reads as architecture.

Continue researching
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