HVAC and Plumbing in AI Answers: Equipment Makers Lead, With No Single Winner
Evidence pack, 5W Public Relations Research

Measured: October 26, 2026 · 24 questions × 3 runs · 288 AI answers
This pack holds the measurement data behind the report. Every number in the report can be
recounted from these files. Counts in the report come from summary.csv and per_engine.csv.

Files:
- summary.csv: One row per tracked name: answers naming it, appearance rate and 95% interval, first-mention position, own-domain citation, citation share, Google AI Overview counts and five-engine totals.
- per_engine.csv: The same counts split by engine (ChatGPT, Claude, Gemini, Perplexity).
- significance.csv: Pairwise comparisons between the leading names (z-test, p-value, whether the 95% intervals overlap).
- sources.csv: Cited domains: number of citations, share of all citations, and how many answers cited each domain.
- entity_rollups.csv: Spellings and name variants counted together with each tracked name.
- trials.csv: One row per answer: engine, question, run, names found, citations, measurement time.
- raw_responses.jsonl: The full text of every answer and Google AI Overview, with its citations, one JSON record per line.

SHA-256 checksums:
2f68d1237ce56ba3e62c2f6c21632502204ebfed78778020ccec4cac1301920a  summary.csv
08bcf5b0d984663e3d7d1a85be44d5fc1099e84eabf31ac1b6abdd5f7840ca7d  per_engine.csv
cf7a04f21a14743c0951071023fd21c8e28175a74e3ec80264cdbcb5f503bd04  significance.csv
9ecf100754f4b3483a9d52b962d931bf2a1be5ff0202a2f4750e38ba8575c3d1  sources.csv
86aca414f01657e8e7dc9b4e6086f1843ac6c52e3ab23b5fc39c5963bb03b74a  entity_rollups.csv
a63b9cc15d4131c2339cdd7501476fe3f4952a8cba13119d35ac6af636d32235  trials.csv
c9d667ef67c2045b2c9c3f68ea13b1abcf32c7c677c06ec916c4fccd0a570486  raw_responses.jsonl

Questions or corrections: info@5wpr.com
