Airflow and pressure
How stack effect, wind, exhaust and duct behavior move air, odors and moisture through a house.
Learn the concept, then apply the field method.
The collection alternates between building-science explanation and bounded homeowner observation. It does not turn one clue into a diagnosis.
Stack effect through a house: what it means in a house
Temperature differences can create upward or downward air movement that redistributes moisture, odors and combustion risk.
Continue →FIELD METHOD · 1 MINStack effect through a house: an evidence-first field method
A practical method for observing, comparing and documenting stack effect through a house without turning one clue into a diagnosis.
Continue →CONCEPT GUIDE · 1 MINWind pressure on building faces: what it means in a house
Wind can press air and rain into one side of a house while pulling air out of the opposite side.
Continue →FIELD METHOD · 1 MINWind pressure on building faces: an evidence-first field method
A practical method for observing, comparing and documenting wind pressure on building faces without turning one clue into a diagnosis.
Continue →CONCEPT GUIDE · 1 MINExhaust fan depressurization: what it means in a house
Kitchen, bathroom and laundry exhaust can pull replacement air through unintended gaps and transport odors or combustion products.
Continue →FIELD METHOD · 1 MINExhaust fan depressurization: an evidence-first field method
A practical method for observing, comparing and documenting exhaust fan depressurization without turning one clue into a diagnosis.
Continue →CONCEPT GUIDE · 1 MINSupply and return air imbalance: what it means in a house
Closed doors and uneven duct paths can pressurize some rooms and depressurize others.
Continue →FIELD METHOD · 1 MINSupply and return air imbalance: an evidence-first field method
A practical method for observing, comparing and documenting supply and return air imbalance without turning one clue into a diagnosis.
Continue →CONCEPT GUIDE · 1 MINDuct leakage and cavity air: what it means in a house
Leaky ducts can draw attic, crawlspace or wall-cavity air into the system or push conditioned air into concealed spaces.
Continue →FIELD METHOD · 1 MINDuct leakage and cavity air: an evidence-first field method
A practical method for observing, comparing and documenting duct leakage and cavity air without turning one clue into a diagnosis.
Continue →CONCEPT GUIDE · 1 MINPressure zones around stairs and shafts: what it means in a house
Stairs, chases and service shafts can act as hidden air highways between floors.
Continue →FIELD METHOD · 1 MINPressure zones around stairs and shafts: an evidence-first field method
A practical method for observing, comparing and documenting pressure zones around stairs and shafts without turning one clue into a diagnosis.
Continue →CONCEPT GUIDE · 1 MINMakeup air in tight houses: what it means in a house
A tighter house still needs controlled replacement air when exhaust, combustion or occupancy removes or changes indoor air.
Continue →FIELD METHOD · 1 MINMakeup air in tight houses: an evidence-first field method
A practical method for observing, comparing and documenting makeup air in tight houses without turning one clue into a diagnosis.
Continue →Use the cluster to ask better questions.
House symptoms often cross systems. Keep competing explanations visible, preserve the baseline and stop where access, electricity, combustion, structure, contamination or hazardous materials create a professional boundary.
