Real ChatGPT answer · index seedpkq96Rp5TNQcompleteHome services and improvement · DIY projectsinformational
What CFM rating do I need for a replacement bathroom exhaust fan that connects to an existing four inch duct running twenty feet through an unconditioned attic?
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Fan-out diagram
The searches the AI actually ran for this prompt.
SEED QUERY
What CFM rating do I need for a replacement bathroom exhaust fan that connects to an existing four inch duct running twenty feet through an unconditioned attic?
1 real search · 1 real-search pass
bathroom exhaust fan 4 inch duct 20 foot equivalent length static pressure fan curve sizing guidanceGoogle ↗
OBSERVEDReason
Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.
Query classes
Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.
ChatGPT real searches (1)
Classes come from the query-classifier (a local Laya model). 1 of 1 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.
Searches and sources
ChatGPT1 real searches · gpt-6
bathroom exhaust fan 4 inch duct 20 foot equivalent length static pressure fan curve sizing guidance Google ↗
- APPENDIX 2: EXHAUST FAN PRESCRIPTIVE DUCT SIZING · bpa.gov
- Midwest Weatherization Best Practices Field Guide · energy.gov
- Bathroom Exhaust Fans · basc.pnnl.gov
- Whole House Ventilation Strategies for Existing Homes · basc.pnnl.gov