Renu Therapy

Renu Therapy manufactures cold plunge tubs and saunas in Southern California, founded in 2020 after its founder built the first Cold Stoic following a ski trip at Mammoth Mountain and brought it to market within three months. The cold plunge line — Cold Stoic 3.0 and 2.0, Vero, Aurelius, Siberian, and Siberian Pro — pairs wood cabinetry, including California redwood, with integrated chilling, temperature control, and filtration, and the company states it builds all of its products at its own Southern California facility, which also serves as a showroom. Renu frames the range around contrast therapy rather than cold alone, selling indoor and outdoor saunas alongside the plunges so heat and cold can be specified together, and offers commercial configurations plus maintenance packages on top of the residential line. (Source: renutherapy.com, fetched 2026-08-07.)