What should be the relation of dryer exhaust systems to other systems?

Dryer exhaust systems must be independent of all other systems to ensure safety and efficiency. This independence is crucial because dryer exhaust contains lint and moisture that can adversely affect indoor air quality and lead to potential fire hazards when mixed with other ventilation or HVAC systems. An independent system ensures that exhausts do not interfere with the operation or the integrity of other systems, which might lead to backdrafts, contamination, or ineffective performance.

Furthermore, having a dedicated exhaust pathway minimizes the risk of lint accumulation in shared ductwork, which is a common cause of dryer fires. By routing dryer exhaust independently, it allows for better maintenance, with clear access for cleaning and inspection, ultimately promoting safer operation and energy efficiency.