Roof Ridge Vent And Exhaust Fan

Ridge vents are a passive system simply allowing hot air to rise up through them rather than pushing it out as a fan does.

Roof ridge vent and exhaust fan.

It could reverse the natural flow of hot air out the ridge vent. If you have few vents in your attic most of the air will be drawn from inside the house. First you ll partially block your roof vent with the piping reducing the flow of cooling air through your attic. In this case the ridge vent pulls its intake air from the power fan which can lead to weather infiltration and poor ventilation along the underside of the roof deck.

By installing more roof vents such as a ridge vent you increase the possibility that most attic air will come from outside says tim carter a residential contractor in cincinnati. Combining an attic power vent fan with a ridge vent is usually not recommended because. When the power vent goes off it acts like a roof louver an opening on the roof without a motor. In most homes it is typically best to have only the ridge vent and remove.

Second during cold winters you ll be blowing warm moist air onto a cold surface the roof vent and roof plywood. A fan may actually suck air conditioned air from your home into the attic. If air is drawn in through the ridge vent while it s raining it might pull rainwater in with it which could lead to leaking or mold in the attic. This is different from soffit vents which allow air to travel into the attic.