Which term describes air brought into the structure to compensate for vapor and/or gases being consumed or expelled by the combustion process or exhausting device?

Which term describes air brought into the structure to compensate for vapor and/or gases being consumed or expelled by the combustion process or exhausting device?

• A. Fresh Air
• B. Makeup Air
• C. Replacement Air
• D. Infiltration Air

Answer: (C)

Replacement air is the deliberate supply of air brought into a space to replace what has been removed or consumed by a combustion process or by an exhausting device. When a cooking exhaust hood or appliances remove vapors, gases, or heat, the room can lose air and become depressurized if nothing is supplied back in. Introducing replacement air maintains proper room pressure and provides the necessary air for combustion, helping ensure safe operation and preventing backdrafts or unwanted air infiltration. In this context, the term specifically emphasizes replenishing air to offset what the exhaust or combustion process has consumed or expelled. Fresh air describes general outside air for ventilation, while makeup air is closely related but replacement air is the wording used to highlight the replenishment aspect.

Replacement air is the deliberate supply of air brought into a space to replace what has been removed or consumed by a combustion process or by an exhausting device. When a cooking exhaust hood or appliances remove vapors, gases, or heat, the room can lose air and become depressurized if nothing is supplied back in. Introducing replacement air maintains proper room pressure and provides the necessary air for combustion, helping ensure safe operation and preventing backdrafts or unwanted air infiltration. In this context, the term specifically emphasizes replenishing air to offset what the exhaust or combustion process has consumed or expelled. Fresh air describes general outside air for ventilation, while makeup air is closely related but replacement air is the wording used to highlight the replenishment aspect.