One pulls air into the unit from the outside and the other for the exhaust from the burner.
Chimney gas fireplace insert.
The fire remains enclosed in glass to seal off the fireplace chimney opening not allowing the cold air in or the warm air out.
The sizes listed below are simply guidelines.
25 30 000 btu up to 1400 sq.
You also need to consider heat loss construction type and air circulation when selecting your fireplace insert.
A ventless insert doesn t even need a chimney to operate while wood burning models always require a flue to exhaust outside.
There is no better time than spring to add a new gas fireplace gas logs fireplace insert or stove time for your annual chimney cleaning and inspection tips for a clean safe well maintained fireplace this winter.
Gas fireplace insert size.
Choose the right insert for you you ll want to consider several factors when shopping for an insert.
10 18 000 btu up to 800 sq.
The gas insert requires two liners to operate.
Fireplace chimney authority.