Ace the HVAC Journeyman Challenge 2025 – Cool Skills, Hot Success!

Question: 1 / 400

Where must exhaust outlets for ducts carrying explosive or flammable vapors terminate?

Within the building

Closer than 10 feet to the property line

Outside the building

Exhaust outlets for ducts carrying explosive or flammable vapors must terminate outside the building to ensure safety and minimize the risk of combustion. This requirement is grounded in safety protocols designed to prevent dangerous conditions. By venting these vapors outdoors, the chance of them accumulating in enclosed spaces is significantly reduced, thereby decreasing the likelihood of fire or explosion.

Terminating the ducts outside also helps to disperse any potentially harmful gases or vapors away from the structure and its occupants, further contributing to a safer environment. Furthermore, local building and fire codes typically reinforce this requirement, mandating that such exhaust systems include suitable terminations that ensure proper ventilation and compliance with safety regulations.

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Inside an enclosed area

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