Orange flame and only burning at half flame

Orange or yellow gas flame indicates air is not being mixed with the gas before burning.

The pilot burner has air holes to allow air to mix with the gas for efficient blue flame burning.

The air holes are probably blocked if the flame is approximately the usual length or longer. If it is significantly shorter it indicates the gas pressure to the jet is reduced.

The color of the flame can be affected by a few different things. here are three of them: 1. If there is a food substance contacting the burner where the flame comes out, this will give the flame an orange tint. 2. If the propane is being burned at a very high rate, the flame can become invisible in daylight-like conditions. 3. If the propane is being burned at a very low rate it can also have an orange tint. Hope this is clarifying.

You need to get a Plumber or Appliance Tech to come out immediately and check the fuel to air ratio. You are not burning your fuel at the proper mixture. A blue flame is good, yellow-orange is bad.

Normally this is because the burner area is dirty or the pressure regulator may be set too high/low. The black marks are a sure sign that your ratio is too rich and it's just going to build up more soot and become unhealthy and dangerous.

http://inspectapedia.com/plumbing/Gas_Flame_Noise_Defects.htm
Don't wait...

You must get more air to water heater, and check venting .... immediate CO poison danger.
Call qualified plumber immediately.... because deadly carbon monoxide is not being vented properly.
http://waterheatertimer.org/Water-heater-safety-precautions.html#soot

Gene h

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Could be orange for a few reasons could just be burning some dust or something in the air. if it keeps staying orange i would say that it has a cracked heat exchanger and the fan is disrupting the flame.

blue with just a small amount of orange flame flicker ervey now and then,if its orange more than blue your gas orfice is dirty or you need to open up the air shutter so you get more air to burn gas more completely

A <i>temporary</i> orange flame from your gas stove can also occur at peak usage times. An increase in local demand can cause a decrease in pressure in the natural gas line. If all of your gas appliances are in combustion simultaneously, this may also cause a drop in pressure, especially in older houses. If the problem persists, it is likely a dirty/clogged burner or the stove needs servicing. In general, an orange flame (on a gas combustion appliance) means incomplete combustion and carbon monoxide production.

Research Design Studio

its an air shutter issue

On a gas range the tip should just be orange. Are you using gas or propaine? If propaine you need to buy a conversion kit.

there may be an adjustment screw for pilot height. you'll have to look at the valve. a pilot should have an inner cone of greenish blue color and the surrounding flame should be a deep blue no yellow or orange tips. the pilot burns pure fuel no air. the main valve does mix air with the gas in order to burn.