Cold Air Coming Through Gas Fireplace Vent

This cool air results in.

Cold air coming through gas fireplace vent.

We recently bought a 1996 house which has a majestic gas fireplace. Fireplace and chimney basics. The only reason why your vented gas fireplace is drafty is because of the gas logs being installed. The air comes in through the large unsealed hole that is left from the pipe going through.

Putting a bag or plastic over the box outside does nothing. The front vents on the bottom of fireplace is where the cold draft is coming through the top vents not a noticable draft any reason why. Use our magnetic fireplace vent coverto stop the inner cold air circulation from the vents. You will stop the cold drafty air in the winter and keep warm humid air from coming in during the summer months.

Chances are before you had gas logs installed your fireplace was a wood burning fireplace. It appears that you have a superior direct vent gas fireplace which has a gasketed glass door. I suspect that your vent outside is not lower than the fire place which would allow colder heavier air to find it s way into the house. Use our flue coverto stop the outside air from coming in through the flue.

This air is direct to the surrounding area behind the fireplace and comes out through any vent usually the lower grill making the floor icey cold. The basic structure and operation of a fireplace and chimney is something most homeowners readily understand. Fortunately there are only a few possible causes and several very effective remedies. However with vented gas logs cold drafts are quite common.

Unless the door is not on properly it is very unlikely that air is actually coming in from outside that way the cold air normally comes out of the bottom of a rear vented direct vent fireplace the result of a reverse heat exchange. What is a bit unusual in your case is that these vents usually don t pull cold air into the house without a fire present.