What Are the Signs of a Carbon Monoxide Gas Leak?

Carbon monoxide (CO) is called the “silent killer” for a reason. It’s colorless, odorless and hard to notice without proper tools. If it builds up in your home, it can quickly become a danger for you and your family. So, how do you protect yourself against something you can’t see, smell or taste?

The key is to install carbon monoxide detectors. These alarms are the initial line of defense, alerting you to the presence of CO gas before the situation becomes life-threatening. But aside from a detector going off, how can you tell if there’s a carbon monoxide leak in your home? Here are 10 signs to watch out for.

1. Condensation on Windows Closest to Appliances

If you notice lots of condensation on your windows, namely near a fuel-burning appliance like a gas fireplace, this could indicate that something isn’t venting correctly. While condensation alone isn’t always CO-related, this still warrants investigation.

2. Discoloration or Soot-Like Stains

Appliances that run on combusting fuel should always have clean, clear exhaust. If you see brownish-yellow or soot-like stains around a furnace, fireplace or water heater, combustion isn’t happening as it should. This may point to a carbon monoxide risk.

3. Exhaust Fumes Are Inside

If you start to smell exhaust fumes indoors, you are in danger of carbon monoxide leaks. Fuel-burning appliances like cars, charcoal grills and generators should always be operated outside to avoid the buildup of exhaust fumes indoors.

4. Soot in or Around Your Fireplace

Your fireplace should vent smoke and other gases up and out the chimney. Finding soot inside or around the fireplace is a red flag, especially if there’s more than usual. A clogged chimney could be why carbon monoxide is backdrafting indoors.

5. Weaker or No Draft from Your Chimney

Speaking of chimneys, a properly working one needs the solid updrafts to fully remove smoke and other fumes. If you notice weak airflow or even no draft at all, the chimney might be blocked, forcing carbon monoxide back into your home.

6. Discolored or Weak Flames

Most gas-burning appliances should have a clear blue flame. When the flame is yellow or flickering (and it isn’t a decorative gas fireplace), it can mean the gas isn’t burning properly and may be emitting carbon monoxide.

7. Solid Fuel Fires Burn More Slowly

When your wood- or coal-fired stove starts burning slower than usual or has trouble staying lit, it could be dealing with a ventilation issue, increasing the risk of CO buildup.

Signs You May Have CO Poisoning

If you don’t catch the other signs of a carbon monoxide leak in time, the next warning could come from your health. Symptoms of CO poisoning include:

  • Flu-like symptoms
  • Headaches
  • Dizziness
  • Nausea or vomiting
  • Shortness of breath
  • Confusion
  • And fatigue

If you or anyone in your family experiences these symptoms, especially combined with any of the above signs, get fresh air immediately and call 911.

Preventing CO Leaks and Top Safety Tips

Prevention is always better than a cure, especially when it comes to CO gas exposure. First, make sure you have carbon monoxide detectors in appropriate places. Building codes require them outside every bedroom, on each floor of the house and in rooms with fuel-burning appliances. For extra safety, it’s smart to install interconnected detectors so that when one goes off, all of them will sound. Test these detectors monthly and replace them as needed, about every five to seven years.

Along with installing and maintaining carbon monoxide detectors, follow these safety tips:

  • Hire a professional to regularly inspect your heating system, gas or wood fireplace, and any other fuel-burning appliances.
  • Never use grills, portable generators or similar equipment indoors or in enclosed spaces.
  • Run the kitchen exhaust fan whenever you’re cooking with a gas-fired oven or stove, and never use these appliances to try and heat your home.

Service Experts Heating, Air Conditioning & Plumbing Will Help Protect Your Home and Family

At Service Experts Heating, Air Conditioning & Plumbing, we understand the health and safety risks of carbon monoxide poisoning. That’s why our team provides fast, long-lasting solutions for your heating and ventilation needs. We’ll keep your home comfortable, cost-efficient, and most importantly, safe. Please contact us today to ensure you’re taking the proper precautions against carbon monoxide leaks.

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