Terms and conditions

The short version: be reasonable, and so will we.

Last updated October 2026.

Use of this site

By using promethean.is, you agree to these terms. The site provides information about Promethean Innovations and its products. You may view, download, and print pages for personal or internal business use. You may not copy, republish, or use the content commercially without our written permission. The exception is the logo files on the press page, which journalists may use to cover the company.

No offer, no advice

Nothing on this site is an offer to sell or a solicitation to buy any product, service, or security. Figures about market size, prototype performance and earnings are estimates or results from specific installations. Your results depend on your electricity rate, climate, usage, and the market value of computation, which changes over time. Nothing here is financial, legal, or engineering advice.

Products

Purchases of Heatoshi are governed by the terms presented at the point of sale. Commercial installations are governed by the written agreement for each project. If those terms conflict with this page, those terms control.

Intellectual property

Promethean Innovations, Heatoshi®, Have Fun Staying Warm™, the Promethean mark, and all site content are owned by Promethean Innovations or its licensors. Our technology is patent pending.

Links

The site links to other websites, including heatoshi.xyz. We are not responsible for the content or practices of sites we do not operate.

Disclaimer and liability

The site is provided as is, without warranties of any kind. To the extent permitted by law, Promethean Innovations is not liable for any loss arising from use of the site or reliance on its content.

Changes and contact

We may update these terms by posting a new version here with a new date. Questions go through the inquiry form on the press page.