Clothes Dryer Exhaust Duct Length

The exhaust airflow of any whirlpool produced dryer at the maximum rated vent length is at least 105 cfm.

Clothes dryer exhaust duct length.

The exhaust duct run should be as short as possible. The international residential code irc section m1502 clothes dryer exhaust guidelines states that a dryer exhaust duct should not exceed 25 feet from the dryer to the exhaust vent in the wall or roof. The maximum airflow is 230 cfm. Length is only if it s a straight line from the dryer to the exhaust which it rarely ever is.

The maximum length of the. Clean old ducts before installing the dryer. 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. 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.

However that 25 ft. Industry standards recommend that the maximum concealed rigid metal ducted clothes dryer vent length be no more than 25 feet irc. That 25 foot maximum length should be reduced by 2 1 2 feet for each 45 degree bend in the ducting and by another five feet for each 90 degree bend in the vent duct. Measuring about 25 feet in length and 5 inches in diameter the terrabloom can be compressed up to 2 5 its original size.

It allows homeowners to use one 8 foot length of flexible pipe to transition from the dryer to. This includes standard vent and long vent dryer models. The maximum length of a straight run of dryer duct is 35 feet with a 5 foot deduction in length for each 90º bend and half that for 45º bends based on using a 4 inch smooth metal vent with no screws protruding into the air flow. Because the weight of the moist dryer air is much heavier than ambient air i would think the maximum vent length would be less than 1 2 or 1 4 of the acceptable length of a horizontal vent run.

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. The maximum length of a clothes dryer exhaust duct shall not exceed 25 feet 7620 mm from the dryer location to the wall or roof termination. Do not use plastic or thin foil ducting. Terrabloom 6 inch by 25 feet flexible if your definition of the best dryer vent hose for tight space is something compressible then the terrabloom is for you.

Some codes permit 35 feet. Let s start with what the irc international residential code says.