If levels are above 2,000 ppm, this can be a serious condition that could warrant HVAC modification. If the levels exceed 1,000 ppm, the furnace should be tuned to increase levels of fresh air coming into the building. Have an HVAC (heating, ventilation, and air conditioning) or weatherization contractor measure CO 2 levels within your home.High levels of CO 2 can displace oxygen (O 2) and nitrogen (N 2), potentially causing health problems. CO 2 can also build up in buildings that house a lot of people or animals, and is a symptom of problems with fresh air circulation in the building or home. Where CO 2 levels in soils are high, the gas can seep into basements through stone walls or cracks in floors and foundations. The use of dry ice can elevate indoor CO 2 if the air is not ventilated. In its solid form, carbon dioxide is used in fire extinguishers, in laboratories, and in theater and stage productions as dry ice to make fog. Surface soils can sometimes contain high concentrations of this gas, from decaying vegetation or chemical changes in the bedrock. CO 2 is also produced when fossil fuels (such as gasoline, natural gas and coal) and wood are burned. Where is carbon dioxide found?Ĭarbon dioxide is a byproduct of normal cell function when it is breathed out of the body. Solid carbon dioxide is called dry ice because it slowly changes from a cold solid directly into a gas.
At room temperature, carbon dioxide (CO 2) is a colorless, odorless, non-flammable gas, at other temperatures and pressures, carbon dioxide can be a liquid or a solid. Learn what you need to know about carbon dioxide.Īlso known as: Carbonic acid gas Dry Ice CO 2 Diesel Exhaust Component What is carbon dioxide?Ĭarbon dioxide is the fourth most abundant gas in the earth's atmosphere.
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