December 16, 2025 – An incident report has raised significant concerns regarding Renu Therapy LLC’s cold plunge products, including the Siberian, Cold Stoic Classic, Cold Stoic 2.0, and Cold Stoic 3. The report alleges that these products, which utilize ozone purification, emit ozone at levels far exceeding legal limits and EPA standards, potentially exposing thousands of customers and employees to toxic concentrations. It claims the manufacturer was notified of the issue but has not corrected it, nor do they inform customers of the risks.
Product Details
Incident Overview
According to an incident report filed on September 2, 2024, Renu Therapy LLC, a company selling cold plunges to residential and commercial customers since 2019 or 2020, is allegedly marketing products that emit dangerously high levels of ozone. The report specifically mentions their Siberian, Cold Stoic Classic, Cold Stoic 2.0, and Cold Stoic 3.0 models, all of which incorporate ozone purification.
The core of the incident centers on the manufacturer’s alleged failure to test or regulate ozone distribution and off-gassing from their products. Concerns initially arose from employees and customers who conducted their own personal testing, reportedly finding ozone emissions significantly above legal limits. The report claims Renu Therapy is aware that its products do not meet EPA standards and are knowingly selling “highly toxic products.” It further alleges that the company was notified of this issue but “refused to correct it” and does not inform customers about proper use or the risks of ozone exposure. The report concludes that thousands of people, including customers in homes, gyms, spas, and health centers, as well as employees, are being unknowingly poisoned due to what is described as Renu Therapy’s “lack of care and absolute neglect.”
Safety Concerns
The primary safety concern highlighted in this incident report is severe ozone exposure, which can have significant health consequences for those inhaling it.
- Immediate Dangers: Ozone, even at low concentrations, can irritate the respiratory system. Exposure to high levels, as allegedly emitted by these products, can lead to immediate symptoms such as coughing, throat irritation, shortness of breath, chest pain, and increased susceptibility to respiratory infections. Individuals with pre-existing respiratory conditions like asthma or emphysema are particularly vulnerable to these acute effects.
- Long-Term Risks: Prolonged or repeated exposure to high levels of ozone is linked to more serious health issues, including chronic respiratory problems, permanent lung damage, and a reduction in lung function. It can also exacerbate existing heart conditions. The report alleges that “thousands of their customers and employees are being poisoned,” indicating potential widespread and continuous exposure.
- Who Might Be Affected: Both residential customers using these cold plunges in their homes and commercial users in gyms, spas, and health centers could be affected. Employees involved in manufacturing, sales, or maintenance of these units might also be at risk due to occupational exposure.
- Property Damage Potential: The incident report does not specify any property damage concerns associated with the alleged ozone emissions; the focus is entirely on human health risks.
What Consumers Should Do
Given the serious allegations regarding ozone emissions, consumers who own Renu Therapy cold plunges should take immediate action:
- Immediate Steps: If you own a Renu Therapy Cold Stoic, Siberian, Cold Stoic 2.0, or Cold Stoic 3 cold plunge, immediately discontinue its use, especially if it employs ozone purification. Ensure the area where the product is located is well-ventilated.
- How to Check If They Own the Affected Product: Verify the brand name (Renu Therapy) and model name (Siberian, Cold Stoic Classic, Cold Stoic 2.0, or Cold Stoic 3) of your cold plunge unit. This information can usually be found on the product itself, in the user manual, or on your purchase receipt.
- Prevention Measures: Until further information or a definitive resolution is provided by the manufacturer or regulatory bodies, consumers are advised to cease using these specific cold plunge models. If immediate discontinuation is not possible, ensure maximum ventilation in the area and limit exposure time.
- Reporting Procedures: If you believe you have experienced adverse health effects potentially linked to ozone exposure from a Renu Therapy cold plunge, seek medical attention. Additionally, report your incident to the U.S. Consumer Product Safety Commission (CPSC) at www.cpsc.gov.
Manufacturer’s Response
The incident report notes that the manufacturer, Renu Therapy, was notified of this issue. The manufacturer’s response, as indicated in the report, was simply “Yes,” signifying acknowledgment of notification. However, the report does not provide any further details regarding the manufacturer’s specific actions, plans for correction, or official statement in response to these serious allegations of hazardous ozone emissions.
Legal Help Available
If you or a loved one has been injured by a defective product or suffered property damage due to a product malfunction, you may be entitled to compensation. The experienced product liability attorneys at Farzan Law understand the complexities of defective product cases and can help you navigate the legal process.
Contact us today for a free consultation: 424-325-3112
Our legal team has successfully represented clients in product liability cases involving defective appliances, automotive defects, medical devices, and consumer products. We work on a contingency fee basis, which means you don’t pay unless we win your case.
Note: This information is based on incident reports provided by the U.S. Consumer Product Safety Commission. If you find information that is incorrect, please contact us immediately so we can correct the post to reflect accurate information.
Disclaimer: The information provided in this post is not intended to be legal or medical advice. This article is based on publicly available incident reports. The incidents mentioned have not necessarily been independently verified or adjudicated.