Technical directory · Housing
Three-storey home distribution
Tall houses can have seasonal stack effects and different temperatures by floor even with clean ducts.
What to observe
Record the location of thermostats, returns and hottest/coldest rooms in heating and cooling seasons.
A field example
Warm air collecting at the upper level can result from stack effect and control setup. A cleanliness photo cannot diagnose that pattern; record floor temperatures and operating mode for an airflow assessment.
What the written work should say
Consider building envelope, balancing and zoning assessment as separate services from component cleaning.
Where this task stops
A full-house duct package does not guarantee equal temperature on three levels.