At chimney safety institute of america we commonly get asked about whether homeowners should leave the glass doors on their fireplace open or closed.
Should i leave glass fireplace doors open or closed.
99 of the time your fireplace doors should be open when you are burning a fire.
I ve heard that keeping the glass doors open while the fire burns is counterproductive as it sucks more inside warm air up the chimney.
In the off chance you have.
When you use your fireplace it is best to leave the glass doors open while the fire burns.
Even more important is to leave the glass doors closed and the air shutters closed in between uses of the fireplace to minimize the loss of heated room air when the fireplace is not being used.
Even if this doesn t happen it can severely distort the flames.
If you close the doors the flames pull towards the glass where it can impinge and shatter the glass.
Tempered glass that comes standard on most fireplace doors will shatter once it reaches temperatures of 450 degrees.
That is why we do not recommend closing the glass doors on a fireplace while there is a fire.
A wood stove uses a pyro ceramic glass that is resistant to thermal shock.
Why to keep your doors open.
Ceramic glass doors a masonry fireplace and do not care about any heat coming into your room then it is ok to burn a fire with your glass doors closed.
Hot air rises and when the heat that was generated from the fire finds its way up and out of the chimney it tends to siphon all of the warm air in the room along with it.
If you leave your glass doors open when your fireplace is not in use within a short period of time you would notice a dramatic change in your home s temperature.
Keeping the doors open allows sufficient airflow to ensure complete combustion and to minimize the.
The answer is always open.
It is still an open hearth fireplace which is susceptible to aerodynamics.
Your fireplace isn t a woodstove.
Without direct combustion air into the firebox area glass doors need to be in the open position during your fire.
When a fire is burning your fireplace can reach temperatures up to 1200 degrees.
A fireplace uses tempered glass that is resistant to physical shock.
Should you keep your doors open or closed while a fire is burning in your fireplace.
If you have a blower it helps the heat stay in and the blower blows the heat out.
Keep your doors open like this ez door steel shown to the right.
Keep in mind the glass used with a wood stove is different from that used with a fireplace.
Burning with the doors closed makes for a smokier fire a dirty chimney and more air pollution.
Should i keep glass doors open or closed.
If you crack the doors open partially it can draw fumes and heat into the space.
Opening the glass doors makes the fire burn.