Booster exhaust fan on dryer, may increase risk of fire spread in the building. Venting dryer into the crawl area, adding moisture where conditions are already too wet, risking mold contamination and even adding to the increase of insect damage or wood rot.
When should a dryer booster fan be installed?
If your dryer vent is longer than 35 feet, we recommend that a booster fan is installed to help your system run more efficiently. The airflow through your dryer vent cannot be maintained at the speed necessary to move lint for more than 35 feet.
Where should a dryer booster fan be installed?
The recommended location of the booster fan is a minimum of 15 linear (not equivalent) feet of duct from the dryer outlet. If the fan is mounted closer than the recommended 15 feet, it may develop enough pressure to lift wet lint into the fan impeller resulting in excessive lint loading in the fan.
How long can a dryer vent be with a booster fan?
about 25 ft.
How does a dryer booster fan work?
How do dryer booster fans work? Dryer booster fans help boost airflow through the dryer duct. A pressure switch senses pressure in the dryer duct run and allows power to flow to the fan. A current sensing relay senses electricity flowing to the dryer and as a result - it allows power to flow to the fan.
Do dryer vent fans work?
Dryer booster fans work by boosting airflow through your dryer duct. A dryer booster fan will result in less lint backup and can improve drying times by up to 50%. Dryer booster fans are recommended when dryer duct length exceeds 25 feet with no bends, or shorter if your duct has bends.
What is the best location for a dryer vent?
It's best to route the dryer vent in a horizontal path to the home's outside wall. All horizontal runs should pitch 1/4-inch per foot to the outside. This will help to avoid moisture from sitting in the pipe or draining back to the dryer.
Can you put a booster fan in a dryer vent?
They switch on automatically when the dryer kicks on, using an electric fan to speed up the airflow through the duct, which increases air flow through the dryer. Mount the booster to the wall or ceiling at least 10 ft. from the dryer and in the path of the existing vent. Connect the vent to the booster and plug it in.