Privacy policy

Updated October 14, 2026.

Calculation inputs

The sizing tools calculate in your browser. Fixture names, flows, temperatures, efficiency and voltage remain in the current page's memory. The tools do not transmit these values, place them in browser storage, or retain them after you leave or refresh. They ask for no ZIP code, address, phone number or email. A print copy is under your control.

Contact messages

If you use the contact form, the site receives the name, email and message you enter so that we can reply or check a correction. The form's existing spam controls may process the sending IP address. Include the relevant page and source, and avoid sending unnecessary personal details.

Usage data

The site uses regional consent controls for usage measurement. Its California controls honor Global Privacy Control. Calculation fields do not feed that measurement. The worksheets need no third-party lookup or account. Any analytics used by public hosting are separate from the local arithmetic.

Sharing and choices

No contractor matching or outbound call system receives calculator inputs. There are no email subscriptions on this site. We do not sell contact messages or use them for third-party marketing. To ask about a message you sent or request its removal, use contact. Where applicable law gives additional privacy rights, you may request those through the same route.

In regions where the cookie banner applies, you can clear your saved choice and choose again on reload. California visitors can use their browser's Global Privacy Control setting to opt out.