Intry Verified receipt

Is the Intry A2L Line Set Calculator accurate?

The provenance receipt for the Intry A2L Line Set Calculator: the exact authority its values derive from, the edition they are keyed to, who has final say, and what our automated checks hold them against, rebuilt from their cited source.

The receipt

Calculated from

Goodman/Amana IOG-4047 · Carrier LLG-R454B-01 · Goodman/Amana IOG-4047, p.1 (changeover cautions) · An R-410A line, and the pressures the cautions print · Carrier R-454B FAQ, Bosch A2L Change Guide, Lennox/York R-454B IOMs. Reused verbatim from the locked engine, never re-written for this page. The documents it rests on are listed in the source receipt on the tool page.

Edition

not a code table

Checked

Before any release, an automated check runs the locked engine that produces these figures and holds its answers against values written from the source it cites, so a checked number answers to its source and not merely to itself. The check covers the cases someone wrote a check for, not every input the tool accepts: it tells you where a number comes from, and it is not a proof of every value. As of the current build that suite holds 30959 checks, and this page has to clear them too. This is our own deterministic gate, not a third-party audit.

Runnable

Exposed at the Intry MCP endpoint. An AI assistant can run this calculator, and before each release an automated check confirms the answer it returns is identical to the one the website's own engine produces.

Final say

The manufacturer's installation guide for your exact unit has final say.

Frequently Asked Questions

Use it