2006-12-26 08:42:02 · 6 answers · asked by sabesque 4 in Home & Garden ➔ Maintenance & Repairs
Mostly blue. You may see some flickers of yellow, due to dust, but only very little. If there is much yellow, the air vent to the burner is either plugged or closed.
A furnace operating in this condition WILL produce carbon monoxide, and can kill !!!
2006-12-26 08:49:03 · answer #1 · answered by Anonymous · 2⤊ 0⤋
The flame should be blue without any yellow in it. Some burners have air adjustments to regulate the air and to produce a blue flame. Others, without the adjustments, often become clogged with dust which restricts the air flow. A yellow flame can leave a sooty residue in the exhaust flue, give off an odor and produce carbon monoxide.
2006-12-26 08:52:46 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Blue
2006-12-26 08:46:34 · answer #3 · answered by cowboydoc 7 · 0⤊ 0⤋
Blue... burning gas, with slightly yellow/orange tips...burning air.
2006-12-26 08:49:06 · answer #4 · answered by Chris C 5 · 0⤊ 0⤋
blue cone with light red on top. not burning clean if tips are black or yellow
2006-12-26 17:53:39 · answer #5 · answered by robert c 3 · 0⤊ 0⤋
blue and slightly yellow...to much yellow is a dirty casing, remove it and clean it
2006-12-26 08:52:05 · answer #6 · answered by ticketoride04 5 · 0⤊ 0⤋