The burner flames from your natural gas furnace should look blue or almost completely blue . A healthy natural gas furnace flame is characterized by a roaring blue flame with a light blue triangle in its center. There may be a tiny tip of yellow.
What does a yellow flame mean on a gas furnace?
When flames are yellow or orange it is a sign of dirt build up in the burner, or other possible issues. An unstable flickering yellow or orange flame is an indication that the furnace is not producing an appropriate mixture of gas and oxygen . Ignoring this sign can lead to a large gas leak and lead to disaster.
Why is my gas flame orange and not blue?
If you see orange flames instead of blue flames, the burners may need cleaning or adjusting. The orange color alerts you to your gas stove’s improper combustion , which may emit unsafe levels of carbon monoxide gas.
How do you fix a yellow flame on a gas furnace?
Gas burners burn blue if the ratio of fuel to air is correct. A yellow burner flame is a symptom that the burner is not getting enough air for complete combustion of the gas . Correcting this problem involves adjusting the burner’s air shutter to admit more air, something that an experienced do-it-yourselfer can do.
What color flame is carbon monoxide?
Burners producing EXTREMELY high concentrations of carbon monoxide can burn blue . Conversely, burners producing little carbon monoxide can burn yellow. Carbon monoxide is a colorless, odorless, tasteless, non-irritating and highly poisonous gas at low concentrations.
What should a gas furnace flame look like?
The burner flames from your natural gas furnace should look blue or almost completely blue . A healthy natural gas furnace flame is characterized by a roaring blue flame with a light blue triangle in its center. There may be a tiny tip of yellow. ... Blue flames are hotter and indicate more complete combustion.
Should a gas fire have a blue flame?
A natural gas flame should be blue. Not having a natural gas blue flame color or an LPG (propane) blue flame color, and having yellow or red flames instead, could be indicative of an appliance problem. ... A blue flame burns the fuel completely producing carbon dioxide, water and heat .
What does it mean when your gas flame is orange?
A gas flame appearing yellow or orange in color or behaving with pops of yellow or orange indicates an improper ratio of oxygen for combustion . Often this improper combustion is temporary and could be caused by dust particles or a dirty burner that needs cleaning.
What makes a flame burn orange?
The bright orange of most wood flames is due to the presence of sodium , which, when heated, emits light strongly in the orange. ... The blue in wood flames comes from carbon and hydrogen, which emit in the blue and violet.
What does a lazy flame look like?
A low-burning, flickering orange flame , known as a “lazy” flame, is not hot enough to be efficient. A lazy flame usually has black tips or emits dark black smoke. ... This flame is receiving too much air and needs to be reduced. The proper flame is yellow, steady and solid, without flickering or wavering to either side.
Why does my gas fireplace have a blue flame?
Gas fireplaces have blue flames because their flames are hotter than the traditional orange and yellow flames. The blue flames being emitted from your fireplace are evidence that your gas is being burned properly and everything is combusting as it should.
Which gas burns with a blue flame?
Carbon monoxide burns with blue flame. In the presence of oxygen including atmospheric concentrations carbon monoxide burns with a blue flame producing carbon dioxide. When nitrogen gas burns, It has no color, odor or taste, and produces water when it burns in air.
How do I know if my gas fire is leaking carbon monoxide?
- You see black, sooty marks on the front covers of gas fires.
- There is heavy condensation built up at the windowpane where the appliance is installed.
- Sooty or yellow/brown stains on or around boilers, stoves, or fires.
- Smoke building up in rooms.
Does blue flame produce carbon monoxide?
Carbon Monoxide
A blue flame is one indication of proper function and complete combustion . As discussed, malfunctioning units may generate carbon monoxide, due to incomplete combustion.
Does yellow flame mean carbon monoxide?
A yellow flame indicates improper adjustment and a possibility of excessive carbon monoxide . Do not use the oven as a source of heat.
