Renu Therapy Siberian Pro Large Cold Plunge with Chiller
- 33-37°F minimum
- 81-100 gal
- 0.8-1 HP chiller
- Cold only
SVT Score
A large wood-body cold plunge with a built-in 0.8 HP chiller, rated to 37°F, on a household outlet.
$15,499
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Usability
3.9 out of 10- Lid: vinyl lid, insulation not stated
Better on build & insulationSun Home Cold Plunge ProA stainless tub. $13,999Scores 8.0- Filter: 50-micron filter, above the 25-micron mark
Better on features & water careNordic Wave Viking XL Cold Plunge20 micron filter. $8,990Scores 8.0- Searched: Intertek UL CSA CPSC Health Canada
Better on verificationPlunge Original cold plunge tub with Pro ChillerIntertek lists Plunge's maker. $8,490Scores 4.0- Labour: Renu pays up to $50 an hour for two hours if the owner cannot repair it
Better on warranty & supportBlueCube C1The whole system. $16,500Scores 7.0- Option: With Light $15,819.00 at renutherapy.com
- Option: Extended chiller warranty $499.99 at renutherapy.com
Strengths
- Large tub for tall and broad users
- Strong chiller for the size
- Insulated plunge tub holds its chill
- Dual drain with a pump option
- Plugs into a standard household outlet
Drawbacks
- One-year warranty on the whole tub
- No app or Wi-Fi
- Cold-only with no heating mode
- Heavy to move into place
- Its own pages disagree on how much it holds
A big tub for tall users that holds cold, but the warranty is short
Specs
- TypeRigid
- HeaterNot applicable
- FormTub
- PlacementIndoor or outdoor
- SeatsNot applicable
- Max TemperatureNot applicable
- Min Temperature33-37°F
- Capacity (Gallons)81-100 gal
- Chiller0.8-1 HP
- HeatsCold only
- Water CareFilter, Ozone
- Power Supply120V plug-in (15A)
- EMF ClaimedNot applicable
- EMF MeasuredNot applicable
- CertificationsClaimed only
- Warranty1 Year
At a glance
- Fits users up to 6 ft 10 in
- Urethane-coated wood body
- Navy or black body
Renu Therapy LLC, founded in 2020 by William Bachand, is based in Costa Mesa, California, and owns the brand.
- Renu Therapy sells saunas and cold plunges in the US, from a two-person indoor cabin to an eight-person outdoor barrel.
- Its saunas and cold plunges are sold on its own US store at renutherapy.com, which ships them free to the contiguous US.
- That store also sells another company's infrared cabins.
- No Renu Therapy store or listing was found on Amazon US in November 2026.
The Renu Therapy Siberian Pro is a large cold-only plunge with a urethane-coated wood body and a 0.8 HP chiller built in, in black with a California Redwood deck. Renu rates it to 37°F; its manual gives 100 gallons and its cut sheet 120 gallons, in a 48 by 24 by 30 inch tank inside an 80 by 33⅝ by 37 inch body.
A built-in control panel sets the temperature, a 50-micron filter works with ozone, and a dual VGB-compliant drain can empty it by gravity or pump. It plugs into a standard 120 V 15 A outlet through a GFCI cord, fits users up to 6 ft 10 in and 350 lb, and comes with a step stool and a vinyl lid.
It weighs about 650 lb dry; ambient lighting is an option at $15,819.00. The wood-body tub and its chiller carry one year; an extended chiller warranty to five years costs $499.99.
Questions answered from our data
How much does a cold plunge cost?The 62 cold plunges we list run from $549 to $28,880, with a median of $7,495.
How cold does a cold plunge get?32 of the 62 cold plunges we list are rated to hold water at 37°F or colder, as their makers rate them.
How many gallons is a cold plunge?30 of the 62 cold plunges we list hold more than 100 gallons, as their makers rate them.
Does a cold plunge need a dedicated circuit?Seven of the 62 cold plunges we list ask for a dedicated circuit of 20 A or more, or a 240 V supply, as their makers state it.
