The short answer
What Creates Carbon Monoxide After a Fire
Any fire that burns without enough oxygen produces carbon monoxide. After the flames are out, smoldering wood, insulation, drywall, and upholstery can continue to release the gas. Damaged furnaces, water heaters, or gas lines that were exposed to heat may also leak it into the air you breathe.
The risk does not end when the smoke clears. Carbon monoxide can linger in trapped pockets, inside wall cavities, and in basements. You cannot see or smell it, so you might not know it is present until you feel symptoms. That makes it a hidden danger during the cleanup phase.
How Carbon Monoxide Affects Your Body
Carbon monoxide binds to hemoglobin in your blood much more strongly than oxygen does. That means less oxygen reaches your organs and tissues. Even low levels can cause headaches, fatigue, nausea, and confusion. Higher levels can lead to fainting, chest pain, and serious long-term health issues.
Symptoms can appear gradually, especially if you are working in the affected area for a while. Children, older adults, and people with heart or lung conditions are more sensitive. If you feel dizzy or short of breath, get to fresh air right away and see a doctor.
- Headaches and dizziness
- Nausea or vomiting
- Confusion or poor coordination
- Rapid heartbeat or chest tightness
- Fatigue that gets worse over time
- Flu-like symptoms without a fever
Why You Should Not Re-Enter Too Soon
After a fire, your instinct might be to grab belongings or start cleaning. But the air can still be unsafe. Carbon monoxide levels may stay high for many hours, especially in enclosed spaces. Opening windows helps, but it does not remove gas trapped in walls or under debris.
Professional air testing is the only reliable way to know if it is safe. You cannot rely on your nose or the absence of smoke. If you have a portable carbon monoxide detector, use it, but understand that it might not catch every pocket. Your safety comes first, so wait for proper checks.
How Pros Handle Carbon Monoxide Risks
Local water damage pros use specialized meters to measure carbon monoxide levels in the air and inside wall cavities. They also check appliances and fuel-burning equipment for leaks that could have started during the fire. This testing guides how long the area needs to air out before anyone works inside.
The pros also remove charred materials that continue to off-gas and clean soot from surfaces where it can release more gas. They ventilate the space using high-powered fans and negative air machines. The goal is to bring the air back to safe levels before any restoration work begins.
If you live in Rogers, keep your own carbon monoxide detector near sleeping areas and check its batteries regularly. It is a simple step that can alert you to problems long after the emergency response ends.
- Testing air in multiple rooms and levels
- Checking inside wall cavities and crawl spaces
- Inspecting gas appliances for damage
- Using ventilation equipment to clear the air
- Removing burnt materials that still emit gas
- Recommending when it is safe to re-enter
Steps You Can Take Right Now
If you suspect carbon monoxide is present, leave the building immediately and call emergency services. Do not return until a professional has tested the air. Open all windows and doors from the outside if you can, but do not put yourself at risk to do so.
Turn off gas appliances if it is safe, but never touch a furnace or water heater that has been damaged by heat. Your utility company can shut off the gas supply at the meter. Do not try to clean soot or debris yourself, as that can stir up more gas and other contaminants.
Keep a record of everything you see and do, including any symptoms you feel. That information helps the pros understand the situation and helps your insurance company process any claims. Policies vary, and your insurer decides what is covered.
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Call (479) 370-1500 any time, day or night, and describe what happened.
Call Now (479) 370-1500Frequently asked questions
How long after a fire can carbon monoxide remain?
It depends on the fire size, materials burned, and ventilation. In enclosed spaces, dangerous levels can last for many hours or even a couple of days. Smoldering debris keeps producing gas until it is fully removed. Do not guess; have the air tested.
Will opening windows get rid of carbon monoxide?
Opening windows helps dilute the gas in open areas, but it does not remove gas trapped inside walls, under flooring, or in basements. Smoldering material can keep emitting it. Professional ventilation and testing are needed to be sure the air is safe.
Can I use a home carbon monoxide detector after a fire?
A home detector can alert you to high levels in the room where it is placed, but it may not catch pockets elsewhere. It is a useful backup, not a safety measure you can rely on fully. Professional air testing is the way to know for sure before you re-enter.