Why should A/C condensate drain hose not be discharged into the engine room bilge area?

Discharging A/C condensate drain hose into the engine room bilge area poses a significant risk of carbon monoxide (CO) ingress. When the condensate is improperly drained into an enclosed space such as the engine room, the potential for CO buildup increases. This is particularly critical in marine environments, where engines and generators are running and producing exhaust that contains CO. If water from the condensate drain mixes with the exhaust gases or if it creates a path for CO to be released back into the cabin or other areas, it can lead to dangerous situations for anyone on board.

Proper drainage practices ensure that the condensate is routed away from the engine room, reducing the risk of CO exposure. This is an essential safety measure in marine systems, making it crucial to manage condensate flow and prevent potential hazards associated with exhaust gases.