Terms of Use

Effective date: October 21, 2026.

You may use the calculator for planning, compare products presented on WattNook, share links to WattNook pages, and quote brief excerpts with clear attribution to WattNook. These permissions do not transfer ownership of WattNook or third-party materials.

Do not access accounts, systems, or data without authorization; bypass or interfere with site security or operation; introduce malicious code; or substantially republish WattNook materials without permission, except where the law allows that use.

WattNook claims rights only in materials that Crow’s Ear Investments LLC owns or is authorized to use. Product names, trademarks, images, specifications, and other third-party materials remain subject to their respective owners’ rights. Nothing in these Terms transfers those rights to WattNook or to you.

Calculator results and other calculations are estimates based on the information and assumptions used. They do not guarantee actual runtime, uninterrupted power, or compatibility with any device or setup. Verify current product specifications and compatibility with the manufacturer, and follow all manufacturer safety instructions. WattNook does not provide electrical installation advice or recommendations for life-support equipment.

WattNook may earn a commission when you make a qualifying purchase through an affiliate link, at no additional cost to you. Retailers are responsible for their transactions with you, including order acceptance, payment, shipping, returns, and warranties. WattNook’s purchase links are directed to U.S. destinations. Product availability and retailer service may be limited by location, and WattNook does not represent that a retailer will sell or ship to every geographic area.

Product and source links may take you to websites operated by other organizations. Those websites have their own terms and privacy practices. Review them before using the external site or completing a transaction; WattNook does not control those websites.

Nothing in these Terms limits any right or remedy that applicable law does not permit to be limited or waived.

If you have a question or concern, contact WattNook through the Contact page. You may invite WattNook to discuss a concern informally. Informal discussion is voluntary and does not restrict access to any legal remedy or process available to you.