[ClarkLG]

I want to put a gas "contemporary glass" burner into a wood burning fireplace (my fireplace already has gas run to it).
Should I use a vented or a vent-free burner?

 

[roughneck]

Ventless can be dangerous and are outlawed in many areas due to safety concerns.
With ventless, you should not use the fireplace for a primary heat source and should open a window or door while it’s operating.

 

[user_12345a]

stay away from vent free fireplaces, they should not be legal.

 

[Old Thomas]

If you read and follow the listing for a vent free unit you will have a small unit in a large room with a window open. No matter how clean it is supposed to be, you will be breathing the products of combustion. I recommend a vented unit.

 

[sktn77a]

Neither are a particularly good primary heat source (the vented sets send a lot of heat out the flue and the ventless sets will put a lot of CO2 and water vapor into the room). If it's just for aesthetics, either will work. If it's a backup heat source (again, for occasional use only) the ventless sets are more efficient.

Ventless sets are prohibited in bedrooms.

 

[user_12345a]

For aesthetics, can always go for an electric fireplace and keep the heat off.