12 complete symptom paths42 guides and 60 questions in each1,460 Grade A articlesOne searchable, connected knowledge library140 official sourcesEvidence context with explicit limits
The Living House

Failure simulations

Step through the physical route from trigger to symptom, then see what evidence would support or weaken the pathway.

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2 active pathways
Mechanical

Cooling condensate drain overflow

A blocked, disconnected or poorly sloped drain allows cooling condensate to wet nearby finishes.

  1. Cooling coil removes moisture from air.
  2. Condensate collects in a pan.
  3. Drainage is restricted or disconnected.
Mechanical

Heating pipe thermal expansion creates clicking

Pipe length changes during warming and cooling, producing repeated frictional releases at penetrations and clips.

  1. Heating starts or stops.
  2. Pipe temperature changes.
  3. The pipe expands or contracts.