Privacy policy

Short version: we collect as little as possible.

The calculator

All sizing calculations run entirely in your browser. The appliances and settings you enter are not sent to us or stored on any server.

Analytics

We use privacy-friendly, cookieless analytics (Cloudflare Web Analytics) to see aggregate traffic — page views and referrers. It does not use cookies, does not fingerprint you, and does not track you across other sites.

Affiliate links

When you click an outbound "Check price" link, the destination retailer (e.g. Amazon) may set its own cookies to attribute a purchase. That is governed by that retailer's privacy policy, not ours. See our affiliate disclosure.

Advertising

If we add display advertising in future, this policy will be updated to describe any advertising cookies and your choices before those ads run.

Contact

This is an independent project. For any privacy question, reach out via the contact details published on the site.

Last updated: 2026.