Cold Air Coming In Through Gas Fireplace

Step one is stopping the cold air draft.

Cold air coming in through gas fireplace. Use our magnetic fireplace vent coverto stop the inner cold air circulation from the vents. Keeping your home warmer in the winter can involve a couple steps. If the wall behind the fireplace is uninsulated which is common the problem will be worse. Also you may discover that the knockout for the gas line is letting cold air come in.

Stuffing the hole s with batt insulation will slow the draft down. Ways to prevent cold air entering your home through your fireplace. Leaving the fireplace pilot light on in the winter will help. You will stop the cold drafty air in the winter and keep warm humid air from coming in during the summer months.

I m guessing that that along with a void between the back of the insert and the flue is allowing cold air to come down the chimney past the back of the insert and underneath the insert and out into my family room. This combustion air is necessary because new houses are so air tight there can be a lack of adequate combustion air. We recently bought a 1996 house which has a majestic gas fireplace. It seems that the gas insert s enclosure bottom must sit off of the bottom of the fireplace opening by about an inch.

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. When a fireplace isn t in use cold air from outside can come down the chimney into the home and warm interior air can escape up through the flue. 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. Putting a bag or plastic over the box outside does nothing.

The air comes in through the large unsealed hole that is left from the pipe going through. Install or replace the damper a damper is a metal flap in your chimney that blocks cold air from coming in and warm air from escaping.