Gas Range Flame Color: What Blue vs Yellow Means

Gas flame color indicates combustion quality. Knowing what different colors mean helps you identify potential problems with your range.

Ideal Blue Flame

A properly burning gas flame is:

Primarily blue

Small yellow tips are normal

Steady and even

1-2 inches high

Blue indicates complete combustion with the correct air-to-gas ratio.

Problem: Yellow or Orange Flame

Causes

Insufficient air in mixture

Dirty burner ports

Misaligned burner cap

Incorrect gas pressure

Risks

Incomplete combustion

Carbon monoxide production

Soot buildup

Reduced efficiency

Solutions

Clean burner ports with needle or brush

Verify burner cap is properly seated

Check for debris under cap

If persists, professional adjustment needed

Other Flame Issues

Uneven Flame

Some ports clogged, some clear.

Lifting Flame

Flame separates from burner - too much air.

Sputtering Flame

Moisture in burner or gas supply issues.

Safety Note

If you smell gas without a lit burner, turn off gas supply and call for service immediately.