What is the maximum leakage allowed for a residential duct system per 100 square feet of floor area?

The maximum leakage allowed for a residential duct system is crucial for ensuring efficient HVAC operation and comfort within a building. The chosen answer reflects the standard set by industry guidelines, which generally recommends a maximum leakage of 5 cfm per 100 square feet of floor area. This standard is aimed at minimizing energy loss and ensuring that the intended amount of heated or cooled air reaches the living spaces without unwanted losses through gaps and holes in the ductwork.

Duct leakage can significantly affect energy efficiency and system performance; therefore, recognizing and adhering to this maximum leakage standard is vital for ensuring that HVAC systems operate as designed. This also emphasizes the importance of proper sealing and insulation practices for HVAC installers to promote effective and efficient energy use in residential settings.