Contact
The fastest way to flag a wrong number, propose an addition, or ask a technical question.
Corrections and data questions
If you spot a saturation pressure that doesn't match your manufacturer datasheet or your CoolProp run, please send the refrigerant, temperature, the value the site shows, the value you have, and the source you're comparing against. Cross-check material is especially helpful.
For per-refrigerant editorial pages that don't exist yet (manufacturer-blend PT data, missing narrative), the structural answer is that the page renders with data + chart and omits the prose section until the editorial pass picks it up.
Suggestions and additions
Calculators, refrigerants, or reference data the field tech world wants that the site doesn't cover yet: send a note. The data layer is set up so adding a new refrigerant is a config + regeneration + MDX commit, not a re-architecture.
All correspondence is reviewed by a human; expect a response within a few business days. The site doesn't use a contact form to keep the surface area small and to avoid the spam-vector overhead of a form endpoint.
Not a service request channel
HVAC PT Charts is a reference site. It is not a service-call referral, equipment recommendation, or licensed-professional consultation. For active troubleshooting on a specific system, contact a local HVAC contractor or EPA Section 608 certified technician.