Duct For Bathroom Exhaust Fan

A duct is a passage or channel used to convey air, gas, or liquid. In the case of a bathroom exhaust fan, the duct is used to vent the moist air from the bathroom to the outside of the house. This helps to prevent the build-up of moisture in the bathroom, which can lead to mold and mildew growth.

There are two main types of ducts used for bathroom exhaust fans: flexible ducts and rigid ducts. Flexible ducts are made of a thin, flexible material, such as aluminum or plastic. They are easy to install and can be used in a variety of applications. However, flexible ducts are not as durable as rigid ducts and can be easily crushed or damaged.

Rigid ducts are made of a more rigid material, such as metal or plastic. They are more durable than flexible ducts and are less likely to be crushed or damaged. However, rigid ducts are more difficult to install and require more planning.

The size of the duct you need will depend on the size of your bathroom and the CFM (cubic feet per minute) of your exhaust fan. The CFM of an exhaust fan is a measure of how much air it can move in a minute. The higher the CFM, the more air the fan can move.

To determine the size of the duct you need, you will need to know the CFM of your exhaust fan and the length of the duct run. The length of the duct run is the distance from the exhaust fan to the outside of the house.

Once you know the CFM of your exhaust fan and the length of the duct run, you can use a duct sizing chart to determine the size of the duct you need.

Here are some tips for installing a duct for a bathroom exhaust fan:

Make sure the duct is the correct size for your exhaust fan and the length of the duct run.
Use a duct sealant to seal all of the joints in the ductwork.
Insulate the ductwork to prevent condensation from forming on the duct.
Vent the duct to the outside of the house through a roof vent or a wall vent.

By following these tips, you can ensure that your bathroom exhaust fan is properly installed and is venting the moist air from your bathroom to the outside of the house.