Skip to content
Independent·Affiliate-disclosed·Spec-verified·Prices verified and dated
Home / Compare
Head-to-head buyer guide

Echelon Fitness Step-In Vertical Hard Tub, SKU ECH-TX-CI vs Renu Therapy Cold Stoic 3.0

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

By Ryan · Founder
Updated Oct 19, 2026

Lifespan Vault earns an affiliate commission when you buy through links on this page, at no extra cost to you. It does not change our rankings or our verdicts.

Quick verdict

Echelon Fitness Step-In Vertical Hard Tub, SKU ECH-TX-CI (ultra premium, $11,999.99) vs Renu Therapy Cold Stoic 3.0 (ultra premium, $11,399 to $12,099). Different tools for different jobs (see the per-product details below).

Compared on 7 shared specs · same category (cold plunge).

White Echelon step-in vertical cold plunge tub with a three-step ladder on the left and a control panel on its front face, shown empty on a light grey background
Echelon Fitness

Step-In Vertical Hard Tub, SKU ECH-TX-CI

Echelon's Step-In Vertical Cold Plunge is an upright tub with a 1 HP chiller built in, a 150 gallon fill and a ladder at the side. Echelon's US store sells it for $11,999.99 as a single model with no size or colour options.

PRICE
$11,999.99
View at Echelon Fitness →
Renu Therapy Cold Stoic 3.0 cold plunge in Meterous Black with California Redwood breath deck.
Renu Therapy

Cold Stoic 3.0

A 70 by 33 by 35 inch plunge that runs 37F to 104F on one 120V / 15A outlet, at $11,399, and a warranty badge that reads 5 years while the chiller carries 1.

PRICE
$11,399 to $12,099
View at Renu Therapy →
The verdict

We have not scored these two head to head, so this page does not name a winner. The Renu Therapy Cold Stoic 3.0 starts at $11,399 and the Echelon Fitness Step-In Vertical Hard Tub, SKU ECH-TX-CI at $11,999.99. The per-buyer recommendations below say who each one suits.

Side-by-side specs

SpecEchelon Fitness Step-In Vertical Hard Tub, SKU ECH-TX-CIRenu Therapy Cold Stoic 3.0
price$11,999.99$11,399 to $12,099
water volume150 gallons (567 L)Filled 91 to 104 US gallons; total capacity 134 US gallons
chiller1 HP, built in, per the spec table; refrigerant and chiller make not published; the commercial store's Gen 2 listing says it is built to pair with Echelon's external commercial chillers, including ice-making chillersCustom-optimized 0.5 HP
temperature range37 to 108°F (3 to 42°C) in the spec table; the description says it reaches 2°C (35.6°F)37F to 104F, cold and hot
filtrationPre-filter plus 20-micron filter in the description; paper core filter system with ozone disinfection in the spec table on the same page; Echelon does not say whether these are one systemDual-stage external plus internal, with integrated ozone purification
power110 to 127 V, 60 Hz, USA plug; amperage, circuit size, GFCI and dedicated circuit requirements not published; no UL, ETL or CSA listing published120V / 15A / 60Hz Type B 3-prong, dedicated circuit recommended, GFCI plug
warranty1 year residential and 6 months commercial on cold immersion systems per Echelon's recovery support article; the Terms give 1 year on all equipment and 10 years on frames, and one copy voids all warranties in a commercial setting; the Terms give active Premier Members 5 years of total coverage on equipment without saying whether recovery gear qualifies5 years body from delivery date, 1 year water chiller from delivery date
returns3 published versions: 30 days from delivery with a prepaid label, fee free for a product returned brand new in its original packaging (refund policy); a 60 day trial with $175 return freight, a 10% restocking fee and a refund in 10 business days (returns page); buyer paid return shipping, with some items non-returnable for hygiene or safety reasons (recovery article); none names this tub45 days from delivery, 5 percent restocking fee plus shipping

Echelon Fitness Step-In Vertical Hard Tub, SKU ECH-TX-CI also publishes: model, commercial listing, seller, format, materials, dimensions, weight, structural load, cooling time, pump, sensors and controls, lighting, leveling, installation details, placement, use setting, in the box, delivery, manual, support

Renu Therapy Cold Stoic 3.0 also publishes: body dimensions, tank interior, heater, dry weight, filled weight, power draw, noise, insulation, controls, vent clearance, plumbing, step stool, finishes, extended chiller warranty, lead time, reviews, build

Who should buy which

Pick the Echelon Fitness Step-In Vertical Hard Tub, SKU ECH-TX-CI if

Buyers who want an upright, step-in plunge with the chiller built into the tub, who can take a 485 lb freight delivery or pay $299.99 for Hub Group setup where it is offered.

Skip if

You plan to run it in a gym or studio, since one copy of Echelon's Terms voids its warranties in a commercial setting; you want the amperage and circuit requirement in writing before paying $11,999.99; you want to lie back with your legs out, since Echelon describes a squatting position.

Pick the Renu Therapy Cold Stoic 3.0 if

A homeowner replacing a cold-only tub who wants 37F and 104F from one unit, already has a dedicated 120V / 15A circuit within about 12 feet, 27 inches of clearance at the large vent, and a way to move 365 lbs off a pallet.

Skip if

Delivery stops at the curb and the 365 lb tub is yours to move from there, Renu publishes no white glove or in-home placement option at any price, and changing your mind inside the 45 day window costs a 5 percent restocking fee plus shipping.

Go deeper

FULL REVIEW
Read the Echelon Fitness Step-In Vertical Hard Tub, SKU ECH-TX-CI review →
FULL REVIEW
Read the Renu Therapy Cold Stoic 3.0 review →

Frequently asked

Which is better, the Echelon Fitness Step-In Vertical Hard Tub, SKU ECH-TX-CI or the Renu Therapy Cold Stoic 3.0?

We have not scored these two head to head, so this page does not name a winner. The Renu Therapy Cold Stoic 3.0 starts at $11,399 and the Echelon Fitness Step-In Vertical Hard Tub, SKU ECH-TX-CI at $11,999.99. The per-buyer recommendations below say who each one suits.

How much do they cost?

Echelon Fitness Step-In Vertical Hard Tub, SKU ECH-TX-CI: $11,999.99. Renu Therapy Cold Stoic 3.0: $11,399 to $12,099. Prices are verified against the manufacturer; check the live links for current pricing.

Who should buy which one?

Echelon Fitness Step-In Vertical Hard Tub, SKU ECH-TX-CI: Buyers who want an upright, step-in plunge with the chiller built into the tub, who can take a 485 lb freight delivery or pay $299.99 for Hub Group setup where it is offered. Renu Therapy Cold Stoic 3.0: A homeowner replacing a cold-only tub who wants 37F and 104F from one unit, already has a dedicated 120V / 15A circuit within about 12 feet, 27 inches of clearance at the large vent, and a way to move 365 lbs off a pallet.

Continue researching
Buyer guide
Best Cold Plunges
Chillers and tubs compared: Plunge vs Renu vs Ice Barrel.
Free guide · Weekly drop

The Longevity Gear Buyer's Checklist

The specs that actually decide whether a sauna, cold plunge, red light panel, or smart ring is worth it, plus the real price range for each. Get the free PDF, plus one weekly email on the gear worth buying.

If you purchase an independently reviewed product or service through a link on our website, Lifespan Vault may receive an affiliate commission.