Disclaimer
This page states the disclaimer that accompanies every ColdCalcs calculation, and the professional-verification requirement that governs how its results may be used. It is a plain-language restatement of Terms of Service §3, not a separate or conflicting rule.
Preliminary sizing only
Preliminary sizing for engineering evaluation only. Not for construction. All results must be independently verified by a qualified engineer against the applicable code edition.
Every result ColdCalcs produces is a preliminary sizing calculation only. It must be independently reviewed and verified by a qualified, licensed engineer before being used for design, construction, fabrication, procurement, or installation, in accordance with the applicable edition of ASME BPVC VIII-1, ASHRAE 15, and IIAR-2, and any other code, standard, or regulation that governs your project and jurisdiction.
Nothing on this website, in the app, or in any report it generates constitutes engineering services, a professional engineer (PE) review, PE sealing or stamping, or certification of compliance with any code or standard. ColdCalcs is not a licensed engineering firm. We do not act as the engineer of record for any user, and we do not review, approve, seal, or certify any output for any purpose. Using ColdCalcs does not create an engineer-client relationship, an engineering-services agreement, or any professional obligation on our part. You are solely responsible for obtaining whatever professional engineering review, sealing, permitting, or code-compliance verification your project requires.