Why is gas fireplace leaving black soot?

Clogged Ports on the gas burner, which can cause the gas to not burn fully or cleanly, causing a buildup of soot to occur. If you suspect clogged ports, having your ports cleaned according to the manufactures instructions can alleviate this issue. Improper Airflow can cause excessive buildup of soot.
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How do you keep gas fireplace from sooting?

A technician can often reduce soot levels simply by cleaning out the air intake shutters and restoring the air-fuel ratio. Gas fireplaces that contain ceramic logs used to mimic the look of a wood-burning fireplace often fall prey to another problem having to do with flame impingement.
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Is it normal for gas logs to blacken?

Soot on vented gas logs is nothing to worry about. It is a natural occurrence when the yellowish flames of a gas log impinge on a rough surface. Some people like the look, some don't. If you don't, we suggest that you VERY CAREFULLY take the logs outside and brush the soot off with a whisk broom.
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Why are my gas logs causing soot?

If the logs are improperly placed or are knocked out of position and get in the way of the flame from the burner, then impingement occurs. The flame impinging on the ceramic log will cause soot to form.
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How do you adjust the air mix on a gas fireplace?

Adjust the Air shutter if the Air to Fuel mixture is not correct:
  1. Flame is Yellow or orange producing soot ( low air leading to a rich flame) – Introduce more air by turning clockwise.
  2. Flame is very blue (too much air) – Reduce the air by turning counter clockwise.
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Obadiah's: Gas Fireplace Troubleshooting - Fixing Soot Build Up



What color should flame be in gas fireplace?

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.
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How do I make my gas fireplace flame yellow?

The Gas Fireplace Flame Color adjustment knob is located on the front of your gas fireplace and is used to adjust the color of the flames. Turning the knob clockwise will make the flames more yellow, while turning it counter-clockwise will make them more blue.
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Why do I have black soot in my house?

Black soot, sometimes mistaken for mold, is a black substance or residue that's left behind after fuel is burned. It can come from common household items like candles and is an air pollutant that can cause health problems if it isn't addressed.
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Do gas fireplaces create soot?

Gas fireplaces are typically tuned specifically to produce either yellow or blue flames, and typically produce very minimal soot. So, if you have noticed this build up, you need to address the potential causes with a chimney sweep.
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Do gas logs need to be cleaned?

It is important to clean a gas fireplace monthly even when it is not being used heavily. This will prevent dust and dirt from harming the system and allows you to inspect for damage – potentially catching something that could, later down the road, become an issue.
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Do vent free gas logs produce soot?

Ventless gas logs will provide more heat and will not create soot (if properly installed), but they are far less realistic. They also produce an odor that many people dislike or simply cannot handle, so ventless gas logs are only recommended if heat is the primary reason for thier use.
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Can the fake logs in a gas fireplace burn?

They're specially designed logs made of ceramic that never burn up. They can be used with natural gas or liquid propane gas (LPG). In recent years the vented gas logs have become very popular, because they burn cleanly.
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Do gas fireplace logs need to be replaced?

A: Gas log sets require no daily maintenance but should be inspected annually by a professional. Logs need to be inspected for cracks and breaks and replaced if they are not in sound condition.
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Why does my fireplace glass get black?

So why does the glass on your fireplace turn black? Blackened or cloudy fireplace glass is caused a buildup of soot and other small particles on the glass as a result of the fuel in the fireplace not burning properly, or a lack of ventilation over the inside of the glass.
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How do you stop soot from fireplace glass?

Most modern stoves are built with their own airwash system preventing the build up of soot on the glass. Airwash systems use the vent at the top of the stove to direct a thin layer of air across the glass to wash it and reduce the build up of soot, dirt and grime.
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Why is black soot coming from my heater vents?

If you've noticed black stuff coming out of your AC vents, it's most likely either: Soot from candles or your fireplace (the most likely culprit) Mold spores. Dark dust or dirty insulation.
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How can you tell the difference between black soot and black mold?

You can test the stain by rubbing it with a little bleach on a paper towel; if the black color remains, it's soot, and if the color goes away, it's mold.
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How do you clean black soot?

General directions. Soot particles can be very fine and you may cause further damage by trying to brush them away. Instead, use the nozzle attachment of the vacuum cleaner to pick up the residue. Sprinkle talcum powder over the area to absorb the stain, rub in lightly, then vacuum away the deposit.
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What colour 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.
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Why does my gas fireplace only have blue flames?

When a flame is turned on, it may appear blue in color. This may be temporary and caused by a few factors: particles in the air such as dust, or an incomplete combustion, which refers to a possible lack of oxygen.
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How high should the flames be on a gas fireplace?

Then, turn the gas on and light the pilot. Turn the burner on and set the flame height to high. Take a reading. This time, you want to see an ideal reading of 3.5 inches or the pressure rating indicated in the manual.
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How do I know if my gas fireplace is vented or ventless?

A vented fireplace has attractive yellow and orange flames that lick upward around the sides of the ceramic logs. An unvented fireplace, by contrast, has much less striking flames. These flames tend to be smaller and bluer. As a result, an unvented gas fireplace won't create quite the same illusion as a vented one.
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Can the pilot light on a gas fireplace be adjusted?

On some fireplaces, there will be a "Lo-Hi" button that allows you to adjust the flame upward or downward. On others, there will be a screw that you can easily adjust with a screwdriver. Turning the screw clockwise will lower the flame, while a counterclockwise motion will turn it up.
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What is the average lifespan of a gas fireplace?

How Long Can a Gas Fireplace Last? Generally speaking, you can get a good ten to fifteen years of use before you need to replace your gas fireplace.
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