Dryer Exhaust Booster Fan Problems

Long runs need a dryer vent booster fan.

Dryer exhaust booster fan problems.

If it takes forever for your clothes to dry the problem could be the dryer duct. With the dryer operating open the dryer door. An led light on the indicator panel lets the user know that the fan is operating correctly. Fantech s dedpv 705 feature a wall mount indicator panel that mounts in the wall near the dryer.

Having a proper dryer booster fan is integral to maintaining the well being of your hvac system and your dryer. The fan on the dryer will stop but you should still hear air being pulled through the dryer from the booster fan. A huge problem when it comes to dryer ducts is lint buildup. According to dryer manufacturers and some local building codes duct booster fans should be added in the dryer duct run when the length of the duct exceeds 25 feet with no bends 20 feet with one bend or 15 feet with two bends.

Fan and switch mounting the recommended location of the booster fan is a minimum of 15 linear not equivalent feet of duct from the dryer outlet. With excessive duct lengths or runs with many turns the back pressure also called pressure drop of the duct is too high. Booster fans are specially designed to solve the problems caused by long dryer vent runs. Dryer vent booster fan cut the duct at a convenient location 10 ft.

The reason is simple. A dryer vent duct that s too long reduces the airflow and wastes energy. This lint can later accumulate moisture and in turn cause a whole lot of problems. The fantech dryer exhaust fans have been specially designed to solve the problems caused by long duct runs on clothes dryers.

This is because moist air cannot effectively exit the dryer and exhaust to the outside bogging down the entire drying process. If it s too long you ll have to install a booster fan that has a pressure sensor on it. 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. It gets stuck in the fan blades.

The logic behind these booster fans makes simple sense. If the dryer ducting is going to be more than that add a booster fan and the fan can help move the air that much further. This cuts down on the amount of air that is extracted from the dryer. When you activate the dryer the fan s sensor will be activated and will help push the lint and moisture.

The dryer fan is capable of moving air efficiently x number of feet. If a dryer s vent run is over 25 equivalent feet or the dryer is experiencing long drying time your dryer may need a dryer booster fan. Or more from the dryer hang the booster from a joist or stud then tape the duct to the inlet and outlet with metal tape. These problems are typically caused by long or convoluted duct runs.

A pressure sensitive switch automatically starts the dryer vent booster fan only when the dryer is running.