Cold Air Coming In From Gas Fireplace Vent

Keeping your home warmer in the winter can involve a couple steps.

Cold air coming in from gas fireplace vent.

1 check around the area where the gas line enters your home. Even with no cold air penetration from the outside there are natural reverse convection drafts occurring. You will stop the cold drafty air in the winter and keep warm humid air from coming in during the summer months. The damper that sits above the firebox should be able to close fully and make a tight seal.

There must be home performance contractors insulation air sealing companies even clever hvac people in alberta it s cold up there. Warm air enters the top of the firebox gets chilled by the coldness of the box drops down the back out the lower louvers creating the effect of a draft if your contractor did not seal the doghouse this effect is greater. One is at the top of the hood where it connects to the duct and the other is at the wall or roof cap where the duct exhausts its air. Step one is stopping the cold air draft.

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. Finding the right person is key. That is the primary cause of cold air infiltration. If they don t own a blower door that s a bad sign.

If it is coming from the bottom then it could be make up air. Look on the outside of the house near the location of the fireplace and see if you find a small vent near where the bottom of the fireplace would be. 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. A direct vent gas inserts is flued up the chimney but because it is a sealed firebox the cold air cannot escape back into the room.

A properly installed range hood has two metal dampers to stop outside air from coming in. We recently bought a 1996 house which has a majestic gas fireplace. Remembering to keep the damper closed when the fireplace isn t being used will block the cold air that wants to enter your home. You can stuff fiberglass or foil tape insulation in the hole to prevent the cold air from coming in there.

Use our magnetic fireplace vent cover to stop the inner cold air circulation from the vents. It appears that you have a superior direct vent gas fireplace which has a gasketed glass door. Use our flue cover to stop the outside air from coming in through the flue. A direct vent gas insert will stop those pesky drafts because the insert fits snugly inside the fireplace opening and the insert itself is a sealed firebox.