Filter
Top Products
Why do the windows and mirrors
fog even when the fan is running?
If windows and mirrors are very
cold, condensation can still form on
these surfaces. And if your bathroom
is sealed tightly, replacement air may
not be entering the room fast enough
to displace the moist air. Be sure to
undercut your door sufficiently to
draw fresh air into the room. Fan
placement can also be a factor. Your
fan should be located far from the
replacement air source to ensure the
moist air is drawn out first. Finally,
too many twists and turns in the
ducting will significantly reduce the
ability of the blower to remove moist
air. Make sure your ductwork is as
short and straight as it can be, with
gradual turns rather than tight
corners where necessary.
Why is water dripping from
the grille of the fan?
Dripping water is either condensa-
tion (usually due to cold ductwork
or improper duct installation), or
a problem with the seal on a wall
or roof vent. Insulated ductwork
can help solve condensation prob-
lems, and running the fan longer
will ensure moisture is completely
removed from the duct. Ductwork
should slope down toward a wall
vent to direct condensation out of
the exterior vent opening rather
than back into the fan housing.
Can I install a heater over the
bathtub or in a shower?
No. Heaters are not UL Listed
(Underwriter’s Laboratory) for
installation over a bathtub or
in a shower.
Can I use an inline or multi-port
fan in one large bathroom?
Yes, this works the best for
large rooms because you can
install the ports over the
areas where the ventilation
is needed the most (source
control). The size of the
multi-port would be determined
by the size of the room.
Does a duct-free bath fan
expel air?
No. A duct-free fan is not a
ventilating device. It does not
remove air from the room.
Can I use a smaller diameter duct
than what the fan is designed for?
This is not recommended. It will
cause the fan to run harder, greatly
reducing the CFM performance of
the fan and create excess noise.
Can larger diameter ducting be
used with my bath fan?
Yes, larger diameters will result in
improved performance.
What type of duct is recommended,
rigid or flexible?
It is recommended, where possible,
to use rigid duct. It has less resistance
to air flow and allows the fan to
operate much more efficiently. If
flexible duct is used, be sure the duct
is as straight as possible.
Can I exhaust my fan into my attic
instead of out the roof or wall?
Never exhaust air into spaces within
walls, ceilings, attics, crawl spaces or
garages. The humidity may damage
the structure and insulation.
What type of exhaust fan is
best for a sauna or hot tub area?
High CFM-rated devices are
normally recommended for this type
of application.
Can I use a fan in a steam shower?
No. Since these are normally sealed
chambers, a vacuum will be created.
Can I vent more than one bath fan
out of a roof or wall cap?
No. Always follow the manufacturer’s
recommended ventilation
requirements.
NuTone Ventilation Fans
—
Questions & Facts
Style
Style is a curious thing. To each
individual it is something different.
So NuTone makes a range of unique
products—some that stand out,
others that blend in. But all suit
every sense of style beautifully.
9