Cold Air Coming Through My Gas Fireplace

The damper that sits above the firebox should be able to close fully and make a tight seal.

Cold air coming through my gas fireplace.

Over years of use dampers can become rusted or warped. 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. 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. How can i fix this.

Keeping your home warmer in the winter can involve a couple steps. 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. Use our magnetic fireplace vent cover to stop the inner cold air circulation from the vents. If the wall behind the fireplace is uninsulated which is common the problem will be worse.

It seems that the gas insert s enclosure bottom must sit off of the bottom of the fireplace opening by about an inch. When you close the flue you re essentially plugging the chimney with a metal flap. The air comes in through the large unsealed hole that is left from the pipe going through. Stuffing the hole s with batt insulation will slow the draft down.

You will stop the cold drafty air in the winter and keep warm humid air from coming in during the summer months. Remembering to keep the damper closed when the fireplace isn t being used will block the cold air that wants to enter your home. Step one is stopping the cold air draft. Use our flue cover to stop the outside air from coming in through the flue.

We recently bought a 1996 house which has a majestic gas fireplace. Leaving the fireplace pilot light on in the winter will help.