What is an acceptable safe distance a cloths dryer 3 or 4 inch vent line can be installed, I am looking for total length without using a fan assist motor, does anyone know?
international residential code::
One best practice is a duct length of no more than 25 feet from the wall to the outlet terminal, including the equivalent length for any fittings. The 2015 IRC M1502.4.4.1 allows a maximum length of 35 feet from the connection to the transition duct (from the dryer to the outlet terminal). The maximum length of the exhaust duct is reduced in accordance with the following:
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