Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic.
Installing bathroom fan wall vent.
Connect the red wire to one switch terminal and the black wire to the other terminal.
We explain how to install bathroom exhaust fans or vents the vent ducting the vent termination at the wall soffit or roof vent fan wiring bath vent duct insulation bath vent lengths clearances routing and we answer just about any other bathroom ventilation design or installation question you may have.
Pick up the fan s housing and using its inner portion trace the edges of it onto the wall with a marker.
Wall mounted vent fans are available though they re not as common as ceiling mounted models and may be more difficult to install especially if you have a brick veneer house.
For optimum performance locate it between.
Choose the exact area where the exhaust fan will be installed.
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Measure the vent fan.
This involves running ductwork from the fan usually though an attic and out through the roof.
For a fan and light switch with existing wiring splice the white wires and connect the grounds securely with wire.
Ask your hvac contractor about fabricating a duct run that extends from a fan mounted in a bathroom wall down through the floor and between floor joists out to an exterior wall.
Connect power to both switches through two pigtails spliced to the feed wire.
This old house general contractor tom silva shows how to properly install a roof mounted bath fan vent.
Several different ways you can move that hot air to the outside.
Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof.
In order to accomplish this the roof has to have a hole cut in it.
Another method a little bit better is if you have a gable style roof and a gable vent on one end of the house you can attach this to the back of a gable vent.
There are ductless vent fans that use a charcoal filter to remove odors but they do not remove excess moisture which is the main purpose of a bathroom vent fan.
Using the drill now make holes through the interior wall at the four corners on the tracing.
Fabricate the duct run from rigid metal or pvc material.