For proper and efficient combustion, air fuel ration is very important, if the supply of air is excess then there will be excess of smoke, and if it exceeds more than normal level the combustion will burn off causing flame failure.

Why is my boiler flame yellow?

A blue flame from your furnace or gas stove indicates that the gas has become completely combustible. If your burner flame is yellow, orange or red, this usually indicates that it’s not receiving enough air for complete combustion.

How do you fix a yellow flame on a furnace?

Dirt in the burner is the most common cause of a yellow flame, and it prevents the gas and air from mixing properly. A call to a technician for cleaning and evaluation is needed to fix that problem.

Why is my gas burner flame yellow?

A wavering, yellow flame on a normal gas burner indicates that the burner is out of adjustment or the air inlet is restricted. As a result, the burner may be producing excessive amounts of CO. However, the flames in burners that use fuel oil should burn with a clear yellow or orange flame .

How do I adjust the flame on my boiler?

All you will need to do is to twist the adjustment screw of the flame till the flame goes from one and half inches to two inches, which is about 4 to 5 centimeters high. Look for the adjustment screw on the pilot assembly close to the gas valve if the control valve has this adjustment feature.

What does yellow flame indicate?

A yellow flame indicates incomplete combustion, which means you are wasting gas and money, also it may serious safety hazard. With hydrocarbon flames, such as gas, the amount of oxygen supplied with the gas determines the rate of combustion, flame colour, and temperature.

How do you fix a orange flame on a gas heater?

Quote from the video:
Quote from Youtube video: Range make sure the burner portholes are clean and free of debris spill overs and cooking grease and block these openings which can affect the flame color.

What Colour should the flame in my boiler be?

blue flame

When you look and see the flame inside your boiler it should be burning with a blue flame. If it is burning with a yellow flame, this could be a sign that carbon monoxide is being produce.

What color should boiler flame be?


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 color is a carbon monoxide flame?

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.

Should gas fire flames be blue or yellow?

blue flames

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.

What is the difference between a yellow gas flame and an orange gas flame?

There is a yellow flame. Carbon monoxide is produced. The burning of dust is represented by the orange flame.

What is the difference between a blue flame and a yellow flame?

Blue and Yellow Flame

As it relates to hydrocarbon gases, blue flame is indicative of complete combustion whilst a yellow flame indicates incomplete combustion. An LPG blue flame also burns hotter, at around 1,980°C, vs about 1,000°C for a yellow flame.

Why is my gas flame orange and not blue?

If you see orange, yellow or red flames instead of blue flames, the burners may need cleaning or adjusting. The orange colour warns you that the gas stove has inappropriate combustion, and it may emit treacherous levels of carbon monoxide gas (CO).

Can low gas pressure cause yellow flame?

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.

Why is my natural gas flame 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.

Does orange flame mean carbon monoxide?

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.

Why is my gas flame orange UK?

Why is my Gas Hob Flame Orange? If your gas hob flame is burning orange, then your worktop needs attention immediately. An orange or yellow flame means that it’s releasing carbon monoxide as it burns which isn’t what you want at all.

What Colour should a gas fire flame be?

Proper Flame Colour

A gas fireplace should burn flames that are blue, perhaps with very small tips in yellow or orange. The flames should be steady and consistent no matter what. Although, there is a small exception.

How do you detect carbon monoxide?

How to find carbon monoxide leaks

  1. Brownish or yellowish stains around appliances.
  2. A pilot light that frequently goes out.
  3. Burner flame appears yellow instead of clear blue (exception: natural gas fireplaces)
  4. No upward draft in chimney flue.
  5. Stale-smelling air.
  6. Soot, smoke or back-draft inside the home.

How do I know if my house has a carbon monoxide leak?

Signs of a carbon monoxide leak in your house or home

Sooty or brownish-yellow stains around the leaking appliance. Stale, stuffy, or smelly air, like the smell of something burning or overheating. Soot, smoke, fumes, or back-draft in the house from a chimney, fireplace, or other fuel burning equipment.

Can an Iphone detect carbon monoxide?

HIGHLIGHTS. Apple has been granted a patent to integrate gas sensors on its devices. The patent talks about gas sensors being integrated on iPhones and Apple Watches. These sensors will be able to detect toxic gases such as carbon monoxide and methane.

What are the signs of carbon monoxide in a home?

The underground electrical cable fires produce large amounts of carbon monoxide gas that may seep into nearby houses.

The following 12 signs may help you to detect a carbon monoxide leakage or buildup in your home, such as:

  • Breathlessness.
  • Chest pains.
  • Fits.
  • Loss of consciousness.
  • Headaches.
  • Nausea.
  • Confusion.

Can opening a window stop carbon monoxide poisoning?

Opening a window will slow carbon monoxide poisoning, but it likely won’t stop it. There simply isn’t enough airflow through most windows to get rid of the poisonous gas, and it could take between four and eight hours for the CO to dissipate entirely.

How do you get carbon dioxide out of your house?

Reducing Carbon Dioxide Levels At Home With An Algae-Based Air…

  1. Ventilation can make a huge difference. …
  2. Keep a tab on your HVAC system. …
  3. Installing algae-based air filters can be beneficial. …
  4. Bring the greenery inside. …
  5. Limit using rugs or carpets around the house.

What leaks carbon monoxide in a house?

Clothes dryers. Water heaters. Furnaces or boilers. Fireplaces, both gas and wood burning.