My 15 year old Lennox furnace is showing error code E205 and I am trying to figure out if it is cheaper to repair or just replace the whole unit before winter hits.
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Fan-out diagram
The searches the AI actually ran for this prompt.
SEED QUERY
My 15 year old Lennox furnace is showing error code E205 and I am trying to figure out if it is cheaper to repair or just replace the whole unit before winter hits.
2 real searches · 1 real-search pass
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 (2)
Classes come from the query-classifier (a local Laya model). 1 of 2 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.
Searches and sources
ChatGPT2 real searches · gpt-6
Lennox furnace error code E205 meaning model specific official troubleshooting Google ↗
2026 furnace repair cost versus replacement cost average furnace lifespan 15 years HVAC Google ↗
- Integrated Control Diagnostic Codes · lennox.com
- LENNOX EL280UHEK Series Gas Furnace Installation Guide · device.report
- Furnace Repair vs Replacement: Costs & Decision Guide · carrier.com
- How Long Does A Furnace Last? · carrier.com
- Pre-Retrofit Assessment of Existing HVAC Systems · basc.pnnl.gov
Queries
2 queries · click a column to sort
| Query / type | Search | Intent | Query class | Routing format | Cluster | Freq ↓ | Weight |
|---|---|---|---|---|---|---|---|
Lennox furnace error code E205 meaning model specific official troubleshooting OBSERVED | Google ↗ AI Mode ↗ | — | Reason | — | — | 1x of 1 | |
2026 furnace repair cost versus replacement cost average furnace lifespan 15 years HVAC OBSERVED | Google ↗ AI Mode ↗ | — | Comparison | — | — | 1x of 1 |