Cold Air Coming Through Gas Fireplace Vent

The only reason why your vented gas fireplace is drafty is because of the gas logs being installed.

Cold air coming through gas fireplace vent.

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. 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. Putting a bag or plastic over the box outside does nothing. The basic structure and operation of a fireplace and chimney is something most homeowners readily understand.

Heatilator ec36 woodburing firplace 01 23 2008 11 09 am 9. It appears that you have a superior direct vent gas fireplace which has a gasketed glass door. 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. A fireplace requires ventilation through the chimney which means warm indoor air rises outward through the chimney while cold outdoor air sinks inward.

Chances are before you had gas logs installed your fireplace was a wood burning fireplace. Use our flue coverto stop the outside air from coming in through the flue. Fortunately there are only a few possible causes and several very effective remedies. The question about cold air coming from the fireplace is a question many homeowners have.

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. 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. The air comes in through the large unsealed hole that is left from the pipe going through. We recently bought a 1996 house which has a majestic gas fireplace.

Fireplace and chimney basics. However with vented gas logs cold drafts are quite common.