Renu Therapy Cold Stoic 3.0 review

The Renu Therapy Cold Stoic 3.0 is the pick for people who want cold and hot water from one self-contained tub and a long warranty behind it. Renu lists it at $12,799 with free curbside delivery in the contiguous US and a 5-Year Limited Warranty. The integrated system cools down to 37°F and heats up to 104°F, uses ozone purification and a two-stage filter, and is controlled from a touch screen or the Wi-Fi app. The body measures 70 in × 33 in × 35 in, holds about 95 US gallons and runs on a 120V / 15A dedicated circuit; Renu rates it at 58 decibels about 3 feet from the grill. A matching step stool comes in the box, and buyers choose from several stone-look base colors and breath deck finishes. The downsides are price, a filled weight of about 1,155 lbs and an extra $400 for the insulated spa cover. Delivery is curbside, so you move it into place yourself.

Who it is for

contrast therapy users who want a long warranty

Price

$12,799 one-time; free curbside delivery in the contiguous US.

Cold Stoic 3.0 $12,799
Quoted from the vendor pricing page on November 14, 2026.

Key features

• Cools down to 37°F (2.7 °C) or heats up to 104°F (40 °C)
• Integrated Wi-Fi controlled chiller and heater with ozone purification
• Dual-stage filtration with an external quick-swap filter and an internal filter
• Holds about 95 US gallons; 70 in × 33 in × 35 in body
• 58 decibels at about 3 feet from the grill

Strengths and weaknesses

• Strength: 5-Year Limited Warranty, the longest component cover on this list
• Strength: Chiller, heater and tub in one cabinet with a touch screen
• Strength: Ships in 3 to 5 weeks with free curbside delivery
• Weakness: $12,799 is more than double The Plunge on sale
• Weakness: Filled weight is about 1,155 lbs, so floor strength matters
• Weakness: Insulated spa cover is a $400 option; a basic lid is standard

Key facts

• Temperature range: 37°F to 104°F
• Water: About 95 US gallons
• Power: 120V / 15A dedicated circuit
• Warranty: 5-year limited
• Price: $12,799

Where it ranks

Renu Therapy Cold Stoic 3.0 is No. 5 in our Best Cold Plunge Tubs verdict.