My gas fireplace works fine but the glass on one side gets all black very quickly. What can be causing this to happen?

Dale Koehn

• 88 Answers
• Posted on Jan 25, 2009

SOURCE: Black sot from vent free gas fireplace

Thanks for your question,
your problem is either impingement on your log set, or a product of incomplete combustion, if you notice soot on your logs, then you will need to take them out, clean them, and reinstall them as to not have the flame touching them, you will need to clean the burners as well, make sure nothing is laying across the burners, as this too will cause sooting, as far as incomplete combustion, was this model a natural gas converted to propane or the other way around ? if so who ever converted it, did they adjust the gas valve according to specs? improper adjustment will cause sooting or hooking up a natural gas unit to propane will do this too, I will recommend using (Rutland White Off) to remove any soot from your glass, it works fantastic for this ! any ace hardware will carry it, please do not use windex or any other cleaner on the glass as it will more than likely leave a rainbow affect on your glass once the glass heats up, hope this was helpful to ya, please rate this solution, thanks agai
mr.grzz

SOURCE: black soot on glass and black smoke comes out

Remove the burner and clean all holes ,typically at the end of the burner is a cheep sheet metal valve.This valve adjusts the air to gas mixture by rotating it to increase or decrease the combustible air intake.Air must be sucked into the burner as natural gas is injected into it, this makes for a clean flame,The flame should be blue with small yellow tips.If the flame is long and yellow and sooty increase the air intake on the burner valve.

SOURCE: soot on glass,outside vent and on walls of fireplace

you have a problem with combustion.unit is not burning properly you should turn unit off and call a pro the life you save may be your own

SOURCE: Just boughta used home with a gas fireplace that

the cold air in the sealed box is going to condense on the glass at start up but should go away after 10 or more min.

SOURCE: HOw do I clean the inside glass of my fireplace?

The decorative surround of your fireplace should easily be removed (if it is anything like mine) and you should then see a number of fixing screws which hold the glass in place.

Remove these and the glass will come out (take care not to let it fall).