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How much access space must be provided for cleaning and inspection of exhaust fans with ductwork connected to both sides?

  1. 1 foot

  2. 3 feet

  3. 5 feet

  4. 6 feet

The correct answer is: 3 feet

The requirement for access space for cleaning and inspection of exhaust fans with ductwork connected on both sides is important for maintaining efficiency and ensuring safety in HVAC systems. Providing a space of at least 3 feet allows technicians to effectively access the equipment, facilitating thorough inspections, necessary cleanings, and any potential repairs. This standard access space is often stipulated in various mechanical codes and best practices to ensure that workers can safely navigate around the fan and ductwork, which helps prevent accidents and allows for more effective maintenance of the system. Adequate space reduces the risk of damage to both the fan and the ductwork during maintenance procedures.