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Installing a Dryer Vent

 

Forced heat, whether produced by natural gas, propane or electricity, dries the clothes. It's important to remove this moist air from the house via a dryer vent because it may be mixed with hazardous gases such as carbon monoxide, a byproduct of combustion. Vent pipe is normally made of 4-inch diameter, rigid sheet metal.

 

Flexible vinyl cannot be used because it doesn't support its weight, and lint that collects in low spots presents a fire hazard. Seal joints with foil duct tape. Never use sheet metal screws; they will catch lint.


 

WHAT YOU NEED FOR THIS JOB:

TOOLS:

MATERIALS:


 

Step 1: Cut the Vent Hood Opening

Step 1: Cut the Vent Hood Opening The hood will need to be where it's accessible from inside. Measure the location and
find out where the hood will be from the inside. Translate it to its outside location. Drill
a pilot hole and check inside to make sure the hole is in the right place. Plug and
re-drill if necessary. Use a 4-1/4" hole saw to cut the hood opening.
  

Step 2: Install the Dryer Vent Hood

Step 2: Install the Dryer Vent Hood

Insert the duct pipe through the hole. Attach the hood to the siding with wood screws. Caulk around the edges of the hood to seal against the elements.

  

Step 3: Connect to the Hood Duct

Step 3: Connect to the Hood Duct

The location may require an elbow to the hood duct. You may have one or two 
elbows back-to-back to the run. Attach the duct lengths to the elbow.

  

Step 4: Secure the Duct

Step 4: Secure the Duct

Attach straps to support the duct. Apply foil tape around the joints to seal them and 
help support the duct. Use a carpenter's level and set horizontal sections with a fall 
of  1/4" per foot to prevent moisture from collecting.

  

Step 5: Install the Duct into the Dryer Vent Outlet

Step 5: Install the Duct into the Dryer Vent Outlet

Insert an elbow over the dryer outlet. Connect the duct pipe to the elbow (see inset.) 
Slide the dryer back into place. Level using a carpenter's or bubble level. Adjust the 
legs and lock into place by tightening the locknut against the dryer.