The length of an allowable dryer vent varies based on the local building codes and regulations. Typically, the maximum range is 25 to 35 feet. However, if the vent must have any 90-degree turns, you may see a reduction of five feet from the maximum. Some municipalities may have no specific maximum allowable length as part of the code. Typically, installers will run the vent over the shortest possible distance for safety. The dryer vent cleaning cost is less with a shorter vent length as well. 

Lint is very flammable. Pair that with the hot heat your dryer produces as it runs, it creates a recipe for sparks and flames. Lint build up is the leading cause of dryer fires, so running routine maintenance on your dryer lint trap is critical to keep your home safe.

The ideal time for dryer vent cleaning is typically during the spring or fall. These seasons offer moderate weather conditions, making it easier to access the exterior vent and work on the dryer without the extreme heat of summer or cold of winter. However, the timing can also depend on your usage patterns. If you use your dryer heavily year-round, consider scheduling cleanings more frequently, perhaps every six months, to prevent lint buildup and reduce fire risks. Ultimately, there is no wrong time of year to prioritize safety.

It’s possible to clean your dryer vent yourself in most cases, but it’s usually best to leave this important task to a professional. If you make a mistake when reinstalling the vent, you could kink it, which makes it easier for a blockage to form. Instead, call in a professional annually to do a thorough cleaning and an inspection. They will make sure there are no kinks in the vent that could promote blockages in addition to cleaning it. If your vent runs through a wall, you’ll need help from a professional regardless.