How Long Can Dryer Vent Duct Be

Another option which can be helpful for dryer vents that run vertically through a roof which seem to clog more often than horizontal vents is the addition of a dryer booster fan like the fantech dbf 110 shown below.

How long can dryer vent duct be.

So if you have a space that will need two 90 degree bends then you should have no more than 15 of dryer duct. When the duct has a long way to go from the dryer to the exterior wall a booster fan is actually a good idea. It can help improve the flow of the air so that it doesn t get bogged down and. Extends to 18 elbow turns 90 within 4 of wall.

For example a dryer with a 90 degree elbow at the exhaust port and another at the top of the basement wall can run a maximum of 15 ft. Male to female connections for use on wall vent duct. Allows for only 2 clearance between dryer and wall. It mounts in line with a 4 inch vent in the attic.

Female to male connections for use on dryer vent outlet. Use no more than 25 ft. More dryer vent cleaning information can be found here. In addition if there is a 45 degree bend then deduct 2 5 feet from the recommended length and if there is a 90 degree bend deduct 5 feet.

Flexible dryer vent hoses are usually much longer than you need. The entire 25 feet of the vent pipe from the old dryer location to the exterior vent hood was choked with lint. Excess hose curled up behind the dryer prevents you from pushing the dryer close to the wall and it can also be dangerous. Great site dealing in all aspects of vent maintenance cleaning and solutions.

It allows you to push the dryer very close to the wall. For every 90 degree turn and 2 1 2 feet for every 45 degree turn for dryer vent installation. Dryer manufacturers recommendations supersede this so if you have to make a longer run read the owner s manual. I had to modify the length of the dryer vent pipe and was stunned when i took it apart.

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. If your dryer vent is more than 25 feet long twisting and turning on its way to the exhaust vent contact a dryer vent wizard near you. Elbow turns 90 within 4 of wall. Duct and subtract 5 ft.

Exhaust systems longer than the manufacturer s recommendations can extend drying times affect appliance operation and may encourage lint build up on pipe lining. This can be a great space saver as long as the dryer and the vent are close together. Available in 10 and 20 foot lengths. It has a wide rectangular shape except for the two ends where it connects to the dryer and the vent outlet.