01/21/2019
A pet peeve of mine, and one I come across all too often is an unsafe clothes dryer duct. So often I find foil colored flexible plastic exhaust duct installed for a clothes dryer. While these are both readily available and easily installed, as well as being found in virtually all home stores with an ambiguous or mis-leading description label, they are considered a fire hazard and are not suited for ducting a heat producing appliance - including clothes dryers. They are intended to duct things such as bathroom exhaust fans.
Clothes dryer manufacturers prohibit their use as do many local fire codes. All codes prohibit their use with gas clothes dryers. Homeowners and many contractors unknowingly install them, however an appliance delivery or repair technician will never install them because they are prohibited. Only rigid or semi-rigid material (metal) is permitted. Semi-rigid duct is made form aluminum and will hold its shape when bent. These are usually displayed right next to the plastic ones.