Dryer Vent Length

Dryer vent hoses that are run in a straight line from the dryer exhaust to the outdoors provide the best ventilation and reduce the likelihood of trapped lint.

Dryer vent length.

The airflow of a dryer depends on the design of the exhaust vent. Run a tape measure between your dryer s exhaust vent and the vent hood. The code also defers to manufacturer s specifications which exceed the length allowed by the building code in some cases especially for long vent rated dryer models with a high volume air output. Your new dryer is shifted to vent to the rear.

Besides cleaning out caked on lint from dryer vent lines dryer vent wizard of wisconsin will also install and reroute dryer vent lines for maximum efficiency and safety. Clean old ducts before installing the dryer. Click for a larger image. The building code has formulas for determining the maximum length of a dryer vent however the flexible transitional duct that connects to it behind the dryer does not count.

The international residential code irc states that the maximum length for a dryer vent is 25 feet according to the national association of certified home inspectiors website. Measure the length between your dryer and vent hood. The exhaust duct run should be as short as possible. The recommendations can change from model to model even on the same brand s products so consult the owner s manual or installation instructions for your specific model.

The maximum developed length of a clothes dryer exhaust duct shall not exceed 35 feet from the dryer location to the wall or roof termination. However there are a lot of variables that can enter into the equation. Record the measurement for later reference. The exhaust airflow of any whirlpool produced dryer at the maximum rated vent length is at least.

Notice that the length you are allowed to safely run the dryer vent depends on which style of duct your use the amount of elbows needed and type of vent hood. Dryer venting comparison chart. Do not use plastic or thin foil ducting. The maximum length of the duct shall be reduced 2 5 feet for each 45 degree 0 8 rad bend and 5 feet for each 90 degree 1 6 rad bend.

Vent length for vertical installations should likely be considerably less than the. The chart below shows the manufacturer recommendations for maximum vent length under various conditions. The ductwork recommended for use between the dryer in the wall should be rigid or semi rigid modeled ducting that is 4 inches in diameter. When using a straight piece of flexible metal vent hose the maximum length allowed for safe ventilation is approximately 30 feet according to the appliance aid website.