Privacy Policy

Last updated: July 7, 2026

PT Chart (ptchart.org) is a free reference site for refrigerant pressure-temperature data. This page explains what information is collected when you visit and how it is used.

Information We Collect

We do not require accounts, collect names or email addresses, or ask you to submit any personal information. All calculators and lookup tools on this site run entirely in your browser — the values you enter are never sent to a server.

Analytics

We use Google Analytics 4 to understand how the site is used — for example, which refrigerant charts are viewed most often. Google Analytics collects information such as pages visited, approximate geographic region, browser and device type, and referring site. This data is aggregated and does not identify you personally. Google Analytics may set cookies or use similar identifiers in your browser. You can learn more in Google's Privacy Policy or opt out with the Google Analytics opt-out browser add-on.

Hosting

This site is hosted on GitHub Pages. Like most hosting providers, GitHub may log standard technical information about requests (such as IP addresses) for security and operational purposes. See the GitHub Privacy Statement for details.

Cookies

The only cookies or similar identifiers used on this site are those set by Google Analytics, as described above. We do not use advertising cookies and do not sell or share visitor data with third parties.

Changes to This Policy

If this policy changes, the updated version will be posted on this page with a new "last updated" date.

Contact

Questions about this policy? Email [email protected].