I'm looking for a detailed procedure for pressurizing a whole house and and checking for pressure drop (tightness).
Briefly, what I know about it is a fan is installed in the doorway and magnehelics are used to measure drop.
Thanks beforehand.
Install fan in door.
Close all windows, doors and known exhaust vents.
Turn on fan.
Make smoke using smoke generator of your choice.
Check all doors, windows, outlets etc for leaks.
Turn off fan.
Fix leaks.
Repeat if desired.