How To Vent A Basement Bathroom Fan Through The Wall

The 2nd bathroom vent drips on the floor and is ruining the ceiling.

How to vent a basement bathroom fan through the wall.

Learn the secrets to running anew exhaust line through the outside wall install a fan and connect the ducting and electrical. Adding a basement bathroom is a big complicated project. The 2 pipes one a 4 master and the other a 3 2nd do not go through the ceiling but into a common box that goes through the roof. I think the main benefit of venting your bathroom fan through an exterior wall is that you don t have to take it up to the roof.

The first step in figuring out how to install a bathroom fan is cutting a hole based on the size of the fan you need. If you vent through a soffit where attic vents are often located the moisture will get sucked back up into the attic or roof venting. A fan or fan light combination is installed in the bathroom ceiling then vented through the roof or through a soffit or side wall. With the flip of a switch odors and excess moisture are easily vented outside.

If you vent through the roof condensation will drip back into the interior. Thousands of diyers successfully tackle the job every year and so can you. A 3 or 4 inch duct connects to the outlet on the fan housing and runs to a side wall or to the roof and connects to a vent cap that allows the. Ductwork is what will connect the fan to the outside.

Small bath fans provide adequate bathroom ventilation for 79 sq ft. And under while medium bath fans work well for bathooms 70 to 100 sq ft. There aren t many options for routing an exhaust fan to the outside of the house. The bathroom exhaust ventilation fan disperses air through an opening in the fan housing which is usually 3 inches in diameter and ideally faces in the direction of the ventilation system outlet.

There are really only three venting options. The master bathroom and the 2nd bathroom vent through the roof and through the same opening. I recommend that my clients vent their bath fans out a gable wall if at all possible when not using an hrv or erv that is. Here is the link to th.

And please don t even consider venting it to the attic or into a wall cavity because it will spew moisture into the space and may lead to mold damage wood decay and it attracts insects. Adding a basement bathroom. No matter the location of the bathroom you can vent the exhaust fan through the wall. But what happens when a building s design makes it difficult or impossible to vent a bath fan to the exterior.