What is the maximum length a dryer vent hose should be from the unit to the vent termination?

The maximum length a dryer vent hose should be from the dryer unit to the vent termination is indeed 35 feet. This guideline is critical because longer vent lengths can lead to increased resistance and reduced airflow, which negatively impacts the dryer's efficiency and increases the risk of lint buildup. Lint accumulation can pose a fire hazard as it can ignite from the heat generated during the drying process.

Additionally, the venting system should be as straight as possible, with minimal bends, to ensure optimal performance and airflow. If a dryer vent exceeds the 35-foot limit, it may require additional measures, such as installing a more powerful exhaust fan or reducing the length by repositioning the dryer or using shorter duct materials.

The incorrect options represent lengths that exceed this optimal limit, which could compromise the safe and effective operation of the appliance. Thus, adhering to the 35-foot maximum is essential for maintaining safety standards and ensuring that the dryer operates efficiently.