Use the site for planning
You may use the public pages and calculators for personal, educational, and early project-planning purposes. Enter values you are comfortable processing in your browser, check the assumptions, and verify important decisions against the relevant bill, tariff, product document, site conditions, or qualified professional.
Results are not promises
Watt & Wall provides estimates from the values and assumptions shown on each page. Results may be incomplete, unsuitable for a particular property or product, or changed by updated prices, weather, usage, installation choices, defects, layout, or local requirements.
You are responsible for checking inputs and deciding whether a result is appropriate. Read the Disclaimer for the limits that apply to safety, cost, materials, and professional decisions.
Content, links, and availability
- Formulas, explanations, branding, and page content belong to Watt & Wall or their credited source owners; do not copy or republish them as your own.
- External links are provided for source context or user understanding. Their availability and content can change, and their operators’ terms and privacy notices apply.
- We may revise, remove, or temporarily disable a page, source, calculator, or feature to correct an error or update the site.
- We do not promise uninterrupted availability, a particular result, search ranking, advertising approval, revenue, or fitness for a specific project.
Questions and changes
Questions or correction requests can be sent to [email protected]. We may update these terms when the site’s behavior or scope changes. The effective date at the top identifies the current version.