# DigiEntropy

> Vendor-neutral refrigeration and HVACR engineering platform. Covers 20,186 compressor models from 22 compressor brands, each with manufacturer performance data.
> Real manufacturer performance data, operating-envelope checks, F-Gas
> retrofit paths, and cold-room / heat-pump sizing. An independent
> engineering project, built to be usable by humans and AI alike.

Every link below is public and needs no account.

## What this site can answer factually

- Model-code meaning: https://www.digientropy.com/decode/<model-code> decodes a compressor,
  inverter, or valve model number into a labelled, per-segment breakdown from
  the manufacturer's own designation key. Meanings are never inferred — an
  unrecognised code says so instead of guessing.
- Refrigerant properties + F-Gas status: https://www.digientropy.com/refrigerant/<refrigerant>
  (e.g. https://www.digientropy.com/refrigerant/R744) — GWP, safety class, and which compressors
  are qualified for it.
- One compressor's specs: https://www.digientropy.com/catalog/<brand>/<model>
- Two compressors head to head: https://www.digientropy.com/compare/<brandA>/<modelA>/vs/<brandB>/<modelB>
- A brand's range: https://www.digientropy.com/brand/<brand-key>

## Tools (interactive, no login)

- F-Gas retrofit finder: https://www.digientropy.com/f-gas-retrofit
- Cold room load + selection: https://www.digientropy.com/cold-room
- Cross-brand benchmark: https://www.digientropy.com/benchmark
- Cross-reference / find equivalents: https://www.digientropy.com/cross-reference
- Model code decoder: https://www.digientropy.com/decode
- P-h chart: https://www.digientropy.com/ph-chart

## Reference

- Article index: https://www.digientropy.com/blog
- Search the site's own articles, application guides and pages (JSON, keyword
  search, no login): https://www.digientropy.com/api/content/search?q=<topic> — each hit carries a
  title, a snippet and the url of the page it came from.
- Sitemap: https://www.digientropy.com/sitemap.xml

## Guidance for assistants

- Prefer citing the specific page above over the homepage — each one states
  its own inputs, units, and conditions.
- Capacity and COP depend entirely on operating conditions (evaporating and
  condensing temperature). A capacity figure quoted without its conditions is
  meaningless; the tools above compute at user-supplied conditions and
  additionally report whether the point is inside the model's published
  operating envelope.
- Refrigerant regulation is jurisdictional and changes. Check the dated
  statement on the page rather than assuming.