
Plunge
Plunge All-In
Best for All-in-one cold and contrast therapy with minimal upkeep
- Minimum temperature
- 37 °F
- Chiller
- 1.0 HP
- Capacity
- 1 person

The Siberian Pro is Renu Therapy's big-and-tall option: a weather-treated wood tank assembled in Southern California with an integrated 0.8 HP chiller, ozone purification, and 50-micron filtration. It is a polished, quiet (58 dB) plug-and-play package, but its 37 °F floor stops short of the near-freezing temperatures rivals advertise, and the 1-year warranty is short for a $14,099 tub.
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The Siberian Pro's pitch is space and craft. Renu builds the tank from weather-treated wood panels rated for indoor or outdoor use, sizes the 48" × 24" × 30" interior for people up to 6'10" and 350 lb, and finishes it in a choice of five tub colors and two deck woods. The integrated 0.8 HP chiller cools 120 gallons to a stated 37 °F floor (adjustable up to 70 °F), drawing 350–500 W on a standard 120V/15A GFCI circuit and running at a stated 58 dB from three feet. Water care is handled by a replaceable 50-micron filter with tool-free swaps, continuous 24/7 circulation with a 22-minute turnover, and an integrated ozone generator. A matching step stool and insulated vinyl lid are included.
The trade-offs are equally clear from the spec sheet. At 37 °F this is a cold plunge rather than a true ice bath — several competitors at this price publish 32 °F or lower — and the warranty is one year on both the body and the chiller, which is modest for a premium tank. Delivery is free curbside in the contiguous US, but the roughly 650 lb unit is left on the pallet, so getting it into position is the buyer's problem, and Renu quotes a 4–6 week build lead time. What the published page does not state is the tub's absolute cooling speed or a heating option, so contrast-therapy use is not part of the stated feature set.
Installation
Plug-and-play on a standard 120V outlet; free curbside pallet delivery in the contiguous US — moving the ~650 lb unit into position is the buyer's responsibility; ships in 4–6 weeks
Electrical
120V 15A, 60 Hz, GFCI Class A protection integrated in a 9-ft power cord; 350–500 W typical draw while chilling
Running cost
Stated 350–500 W (3–5 A) typical consumption while the chiller is active; 3" HD insulation and insulated vinyl lid reduce losses
Warranty
1-year limited warranty (1 year body & parts; 1 year chiller & mechanical)
Maintenance
Tool-free swaps of the replaceable 50-micron filter; integrated ozone generator; continuous 24/7 circulation with a 22-minute turnover
See this product side by side with its closest rivals.
The manufacturer documentation, independent reviews and retailer listings this review draws on, with the date each was last checked.

Plunge
Best for All-in-one cold and contrast therapy with minimal upkeep

Renu Therapy
Best for Design-led buyers who want a long warranty

Plunge
Best for Buyers who want a commercial-grade separate chiller