If the dirt collected in the furnace is left wet for an extended period, sooty mold can develop and later spread to the furnace filter. Many of the central heating systems that are not cleaned regularly have grown mold, which causes the filter to have a black color.
Why is my furnace filter black after one week?
If you’ve recently changed out your air filter and noticed it was black, you’re experiencing something called “black soot deposition. Essentially, black soot deposition is just an excess build-up of soot, which is typically the result of: A gas appliance or fireplace that isn’t burning fuel properly. Scented candles.
Why is my air filter turning black so fast?
Soot can quickly turn your air filters black, leaving you surprised when you remove to filter to replace it with a clean one. Soot is typically caused one of two ways: candles or gas water heaters. Black soot is a byproduct of burning candles. … Gas water heaters can also produce black soot.
Why does my furnace filter get dirty so quickly?
When the thermostat’s fan setting is set to “ON” the indoor blower will run 24/7, constantly circulating air over the air filter. So now the filter is constantly catching airborne contaminants, causing it to quickly get dirty.
Why does my furnace filter turn black?
Carbon Monoxide Exposure
Carbon monoxide is probably the worst reason why a filter turns black. It’s a poisonous gas, and if it is leaking into your home, you and your family could be breathing it. The health risks are enormous. Carbon monoxide leaks may result from damage inside the furnace.
Can a black air filter make you sick?
You get air filter black mold. As soon as you notice air filter black mold, dispose of the filters! Mold can make you and your family very ill. Symptoms of sickness from mold can include a sore throat, stuffy nose, coughing, wheezing and eye irritation.
Why is there black dust in my house?
Black dust in your house can be found on furniture, fans, rails, stairs, bedding, sinks, plants of appliances. … In fact, black dust may be due to deteriorating duct liner materials in your heater or air conditioner and in some cases cold air returns. It may alternatively be due to soot produced from candles.
What causes soot in a gas furnace?
As the furnace in your house burns fuel to create heat, especially natural gas, there are remnants left over after the process is completed. … One of the combustion byproducts is carbon, the primary ingredient in black soot, which is sent up the heat exchanger and out of the house.
Do candles turn your furnace filter black?
Why Burning a Candle Can Cause a Black Filter
If the filter is not, candle burning is the likely culprit. The reason for this is every time you burn a candle, black soot is produced and this soot gets sucked into your duct system which then collects on your filter turning it black.
Why is my furnace filter not getting dirty?
A filter is designed to catch all the air that goes through your air conditioning. Because of this, it needs to fit snugly inside the holder to have a chance at catching the air. … When that happens, the filter won’t get dirty because all that air isn’t going anywhere near it.
Why does my house get so dirty so quickly?
The dirt from shoes and pet paws and particles in the air that settle into carpet fibers can be a major contributor to dust in the home. Frequent vacuuming (daily or every other day) can help—as long as you don’t recirculate some of the dust back into the living space while vacuuming.
Why are my air filters getting so dirty?
Leaks in your air ducts introduce dust and dirt from areas like your attic. The more dirt a leaky duct system brings into your home, the more dirt your air filter accumulates.
What does black mold look like on furnace filter?
You can typically identify black mold by its color. Many other molds are green or grey, but black mold tends to be a dark greenish black or gray color. It will appear around the home as a slimy, dark greenish-black or gray substance. Black mold grows off of moisture, releasing spores as it consumes organic substances.
Can dirty furnace filters cause carbon monoxide?
How a dirty air filter can lead to CO poisoning. Here’s the brief explanation: a clogged filter reduces air flow and causes your furnace heat exchanger to overheat and crack. Once the heat exchanger cracks, poisonous carbon monoxide can leak into your home.