Real ChatGPT answer · index seedN3rVCItp3gIcompleteHome services and improvement · HVACcomparison

Are UV germicidal lights installed in HVAC ducts actually effective at reducing employee sick days or is it just an expensive marketing gimmick

ChatGPTgpt-63 queries11/1/2026
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Fan-out diagram

The searches the AI actually ran for this prompt.

SEED QUERY
Are UV germicidal lights installed in HVAC ducts actually effective at reducing employee sick days or is it just an expensive marketing gimmick
3 real searches · 1 real-search pass
in-duct UVGI HVAC employee absenteeism sick days evidence study workplaceGoogle ↗
OBSERVED
CDC UVGI HVAC upper room in-duct ventilation evidence effectiveness airborne infectionGoogle ↗
OBSERVED
ASHRAE position document airborne infectious aerosols ultraviolet germicidal irradiation in-duct UV-C 2024Google ↗
OBSERVED

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.

Classifying 3 queries…

Searches and sources

ChatGPT3 real searches · gpt-6
in-duct UVGI HVAC employee absenteeism sick days evidence study workplace Google ↗
CDC UVGI HVAC upper room in-duct ventilation evidence effectiveness airborne infection Google ↗
ASHRAE position document airborne infectious aerosols ultraviolet germicidal irradiation in-duct UV-C 2024 Google ↗

Queries

3 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
in-duct UVGI HVAC employee absenteeism sick days evidence study workplace
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1
CDC UVGI HVAC upper room in-duct ventilation evidence effectiveness airborne infection
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1
ASHRAE position document airborne infectious aerosols ultraviolet germicidal irradiation in-duct UV-C 2024
OBSERVED
Google ↗
AI Mode ↗
————1x
of 1