However, with natural gas as the fuel, you don't have to worry about old fuel or butane. They do not produce soot when operating correctly. June 2015 in Oil Heating. Share this conversation. If it looks as black as soot, and you really like your scented candles and lounging by the fire, it may be black because of soot. 1 … Michael Ferryman. Soot is a carbon residue in the form of a black powder that’s created when organic matter doesn’t burn completely. Category: HVAC. DAN: I have black soot coming out of my heater through the vent, through the wall. Could be caused by incorrect air flow, wrong size burner office (unlikely since it worked for years), or low or high gas pressure at the burner. Submitted: 3 days ago. It should burn clean. These ovens work similarly to a natural gas system and can have similar problems, including soot issues. 2) Soot can be deposited on the heat exchanger, acting as an insulating barrier. Soot buildup in fireplaces that use natural gas for fuel is also largely due to an improper air/fuel ratio. I pulled the cover off where the burner is. When I tap on the ductwork above, some more falls out. TOM: Mm-hmm. 7 Answers. Propane furnace black soot. It will only run for about 1/2 hour before it begins to sputter again. When changing the furnace filter in your Oklahoma home, you should look carefully for soot and a thick black powder that forms when the gas or oil that fuels your furnace is not being burned properly. It is putting out black mist at the exhaust vent is not heating properly. 7 Answers. Relevance. Soot stains on walls are unsightly and difficult to deal with, but it is possible to remove soot from walls, and all you need is some basic cleaning tools and a special kind of sponge. I suspect that the furnace filters have never been changed, or it's been a long time, and that may be the culprit. Once the furnace finally ignites, this combination of oil and gas vapors explodes, causing the dangerous phenomenon known as a furnace puffback. The conversion kit consist of a small spring and orfices that are installed at burners to regulate gas flow. Under normal conditions, your filter should last at least a month and gradually become clogged with grey-colored dust and debris. I have noticed that my heat from vents doesnt feel very war and the furnace seems to run a lot . That’s not good. Menu. The only time they would cause soot is if the propane is burning without the require air mixture. Favorite Answer. Category: HVAC. HVAC Technician: Michael Ferryman, replied 3 days ago. Gas fireplaces and gas fireplace inserts let you enjoy the look and feel of a wood-burning fireplace without the work and mess. You may examine your furnace filter and see that it has turned completely black. That is done with the adjustable sleeve on the mixture tube that the propane is going through before it is mixed with the air that allows it to burn. Their salesman came out and is working up quotes. Experience: Operating Engineer at NRG Energy. One of the biggest problems with oil furnaces is sooting up. Carbon black can be found in black printing inks, paper, plastics, and surface coatings. Satisfied Customers: 601. Three Most Common Causes of Fire Glass Turning Black 1) Missing Air-Mixer (Propane Only) Unlike natural gas that is clean and light, LP gas is a denser, heavier fuel that requires the addition of air to the gas. When a furnace misfires, it releases a puff of black, grimy soot or blackened smoke. If you have a black air filter, first look for black soot and mold. call for black soot in house every were puff back .appaired to be soot through out the house .just started after 10 years of living in house . How to Stop Soot in a Gas Fireplace. I kept smelling gas so i called the gas provider out they came and did leak test and found that it was all good , but they found that the smell was coming from the exhaust vent and there was black stuff in pipe . I assume you have a propane furnace and oven. However, excessive soot buildup can indicate that your furnace is not running at peak efficiency. Reasons Your Furnace Filter Is Black. In this episode of How To, by Sobroke Media, Dan Bethel shows how to properly clean and maintain your propane furnace. TOM: Huh. WOMBAT, Manliness Expert. Because of its close physical and chemical similarity to soot, carbon black is thought to be carcinogenic and can possibly pose a risk to your health if inhaled. crack I have opened in the firebox damper. He did not look inside furnace. Your furnace can create black or brown soot that can get your carpet or floor dirty. Did not see any rust or cracks in the heat exchanger and the CO detector shows no CO inside. moved in to a house and had a look at the furnace. They spread smoke and soot into the air, which can settle on the filter. So, this is coming – you say, it’s – is it coming out of the vent for the – through the wall heater? If black soot is found near where the furnace connects to the ducts, the heat exchanger may be leaking. ! Some soot is only natural, but if soot is causing visible stains, it could indicate several problems. It’s a wall mount heater. My gas logs after burning for more than 20 or minutes in the FP, leave some black soot on the tile below the mantle and the white board above it running horizontal. Excessive sooting can be the result, or combination of, any of three different problems: The ratio of gas and oxygen may need to be adjusted. As the soot layer gets thicker less heat is transferred and more of the heat simply continues to go up the chimney instead of into the building. My oil company has told me it's from a cracked heat exchanger and that I need a new furnace. Can black soot on air filter, in furnace & returns in house be caused by a fixable leak? It begins to sputter and pop. fred9 Member Posts: 29. Soot inside the furnace or boiler reduces the transfer of heat into the heating system's water (or air if it's a furnace). If you have extensive soot marks on your carpet, hire a professional to clean the carpet, as soot is one of the hardest stains to remove if it has already sunk deep into your carpet fibers. Natural gas fireplaces are connected to the house's gas lines and generally receives "fresh" gas. Friday, August 10, 2018. Vented gas fireplace logs will usually have a bit of soot on them because it is a factor of the combustion process, but it is not be the norm for a non-vented fireplace. I have a Payne PG9YAB060100 (model no), 4909A57968 (serial no) propane furnace. Answer Save. Large amounts of soot can be caused by a dirty, clogged or malfunctioning burner, inadequate draft or a low air-to-fuel ratio. Black Soot from Furnace. Search terms Search form submit button. I checked the combustion air intake and it is clear. Black soot can build up inside the combustion chamber of a furnace due to a lack of routine maintenance, but this soot shouldn’t end up in the ducts or coming out of your vents unless there’s a serious problem like a puff back. There is black soot around furnace. In order for a gas furnace to properly work without creating soot, a conversion kit to propane has to be bought seperatly and installed. Lv 7. Lv 7. If there is poor combustion of the propane and/or natural gas then you can have a sooty black residue. 335 S HWY 81 Duncan, OK 73533 (580) 252-1787. Anyway, I always check things out, like filters etc before cranking things on. But it is because I am too cheap to let the emergency heat that I use it for to go up the flue any wider than the .50 in. 1627 SE 1st St Lawton, OK 73501 (580) 357-1787 . Home; Products. If you notice soot buildup on the fireplace glass, check the position of the ceramic logs. It took 30 … i noticed that the condensate water was black and upon pulling the drain tube for the venter motor and secondary heat exchanger have found black particle ( soot) i took a combustion reading at the vent outlet and it was reading 142 ppm co. after contacting the … Favorite Answer. Using low-grade fuel oil boilers also produces more soot than high-quality fuel. Solution to propane furnace discharging soot throughout the home? Verified. DSC_0674.JPG DSC_0674.JPG. 4 reasons a soot smell is bad news: 1) Soot is the result of incomplete combustion, meaning that your furnace isn’t burning the gas properly or efficiently. With gas however it will be very hard to produce the amount of soot that would even make your snot turn black. Thus the transfer of heat into the building is reduced by soot in the heating equipment. Answer Save. What is that means? Sources of soot include candles, fires, matches, and other burning materials. . Unburned oils and gases build up inside the furnace combustion chamber as a result of a furnace failing to ignite correctly. LP stands for liquid (or liquefied) propane, a common fuel for gas ovens that are not connected to natural gas lines. Carbon monoxide can also be released in this fashion, which is highly toxic. Relevance. This insulation barrier lowers your furnace’s efficiency, increasing your energy bills as a result. If perchance the gas pressure is way off from the regulator at the tank, or other causes, a new furnace may also soot up. its a 2006 goodman gmvc950704cxab with a propane conversion kit. What causes black soot buildup on my gas fireplace logs? DAN: It’s coming out of the vent. Puppy Zwolle. It appears as a fluffy, highly pigmented, black powder. I went ahead and turned it on and watched it for a while and little bits of firey red soot was falling....not a lot but still some. 1 decade ago . Do not do this at home. Answered in 4 hours by: 11/10/2020. If you have soot you should check if the ventilation is blocked somehow. I just went to fire up the furnace...it's getting chilly outside and in. New Colman furance and new instant hot water heater, also converted propane cloths dryer and cooking range to electric. If you do not live near enough to a natural gas center but want a gas oven, LP is your only choice. Hi My name … Ask Your Own HVAC Question. Black soot would typically be incorrect air/propane ratio. And it’s all over the outside of my building. 1 decade ago. Black soot will be high if gas furnace has not been converted to propane, most or all furnaces are equipped to operate with natural gas. I noticed soot just above the Control Access Panel. I noticed the other day that the furnace in my fifth wheel was throwing some soot. Otherwise, it won’t burn cleanly and will produce a black soot. If you have neither, try abstaining from candles, and increasing the amount of times you dust. 0 0. audioworm31. I'm homeowner with 22 year old Heil oil burning hot air furnace. Why would I have a black soot over walls and ceilings from a propane gas fireplace? This can cause combustion byproducts like soot to mix with the air in the house. It’s not normal, or healthy, for a furnace filter to turn completely black. I have a Quatro true blue 90 furnace that is approx 10 years old. If you see soot in this area of your house, turn the heat off and call a professional right away. the flame gets blown out and we have to shut it down and let it stop running before turning it back on. 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