We know that houses should be pressure balanced when the air handler and exhaust fan are in use and interior doors are closed.
(the air handler and exhaust fan; are; in use) (interior doors; are closed; ) (We; know; that houses should be pressure balanced when the air handler and exhaust fan are in use and interior doors are closed) Context(We know,List([0, 7))):(houses; should be balanced; )
We know,List([0, 7))
the air handler and exhaust fan interior doors We houses
are are closed know should be balanced
in use
that houses should be pressure balanced when the air handler and exhaust fan are in use and interior doors are closed