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My Nest thermostat keeps telling me my furnace is running too long, so is there a setting I should change or is my ten-year-old gas furnace finally giving out?

ChatGPTgpt-61 query11/1/2026
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Fan-out diagram

The searches the AI actually ran for this prompt.

SEED QUERY
My Nest thermostat keeps telling me my furnace is running too long, so is there a setting I should change or is my ten-year-old gas furnace finally giving out?
1 real search · 1 real-search pass
Google Nest thermostat furnace running too long warning what it means official support; gas furnace troubleshooting long heating cycles dirty filter temperature rise carbon monoxide safetyGoogle ↗
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 1 queries…

Searches and sources

ChatGPT1 real searches · gpt-6
Google Nest thermostat furnace running too long warning what it means official support; gas furnace troubleshooting long heating cycles dirty filter temperature rise carbon monoxide safety Google ↗
  1. Troubleshoot Furnace Heads-Up message · support.google.com
  2. What System Health Monitor alerts mean · support.google.com

Queries

1 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
Google Nest thermostat furnace running too long warning what it means official support; gas furnace troubleshooting long heating cycles dirty filter temperature rise carbon monoxide safety
OBSERVED
Google ↗
AI Mode ↗
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