• Foil or Vinyl dryer exhaust Vents are not safe, or efficient!
o Considered a fire hazard
o Very poor air flow, causing an energy waste
o Ridged interior easily collects and traps lint
o Difficult to clean without puncturing or tearing
o Do not protect against fire spread
o Easily crushed behind the dryer, cutting off proper airflow
o Can develop sags in the vent line, enabling water and lint to collect
o Any Vent made of these materials should be replaced with an all metal duct!
• PVC dryer exhaust Vents are not safe!
o Considered a fire hazard
o Static in PVC venting causes lint to stick to the inside of the vent walls, which can mix with the expelled water during a typical dry cycle, creating sludge and an increased risk of a fire.
o PVC sweats when warm moist air travels through the cool smooth surface. This moist air causes lint to collect and harden and, in turn, makes cleanings more difficult
o PVC takes longer to heat up, allowing water to remain in vapor form inside the pipe. The water, along with the buildup of lint, creates sludge in the vent.
o Interior melting temperature of PVC, causes surface to become sticky, allowing lint to adhere to interior walls
o Any Vent made PVC should be replaced with an all metal duct!
• Rigid Metal duct, The best choice for dyer venting.
o Code compliant material for dryer vents
o Smooth interior finish that allows lint to easily pass through, making lint less likely to build up
o Allows cleaning equipment to navigate through duct without damaging duct material
o Rated the safest for controlling fame spread