Too often, a house is completely
designed before the ventilation system
is fit in. The resulting installations
are often less effective and more
expensive than they should be. You'll
get better results if you plan out the
entire ventilation system early in the
design process.
Because every house is different
and occupant requirements vary, the
best ventilation system for one house
may be completely different from the
system next door. All the various
strategies have both advantages and
disadvantages, which you should consider
while a new house is still in the
design phase.
Compared with new construction,
installing a ventilation system in an
existing home usually involves some
extra planning and expense. But with
a little forethought, it can still be
done