What Are the Signs of a Carbon Monoxide Gas Leak?

Carbon monoxide (CO) is referred to as the “silent killer” for a reason. It’s colorless, odorless and hard to detect without proper tools. If it collects in your home, it can swiftly pose a serious threat 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 your first line of defense, warning you about the presence of CO gas before the situation becomes life-threatening. But besides a detector going off, how can you recognize if there’s a carbon monoxide leak in your home? Here are 10 warning signs to be aware of.

1. Condensation on Windows Closest to Appliances

If you see heavy condensation on your windows, namely near a gas-powered device like a gas fireplace, this could mean that something isn’t venting correctly. While condensation alone isn’t always CO-related, this clue deserves a closer look.

2. Yellow or Brown Stains

Fuel-powered appliances should always have clean, clear exhaust. If you find brownish-yellow or soot-like stains around a furnace, fireplace or water heater, combustion isn’t happening as it should. This can be a sign of a carbon monoxide leak.

3. Exhaust Fumes Are in the House

If you can smell exhaust fumes indoors, you are in danger of carbon monoxide leaks. Gas-burning items like cars, charcoal grills and generators should only be used outdoors to prevent an accumulation of exhaust fumes indoors.

4. Soot in or Around the Fireplace

Your fireplace should vent smoke and other gases through the chimney. Noticing more soot or grime is a red flag, especially if there’s an unusual amount. A blocked chimney vent could be why carbon monoxide is backdrafting indoors.

5. Weaker or No Draft from Your Chimney

Staying on the topic of chimneys, a properly working one should have the steady pull to fully ventilate smoke and other fumes. If you detect reduced ventilation or even no draft at all, the chimney might be blocked, pushing carbon monoxide right back indoors.

6. Yellowish or Inconsistent Flames

Gas-powered appliances should have a clear blue flame. When the flame is weaker and yellow (and it’s not a decorative gas fireplace), it means the gas isn’t burning properly and could be emitting carbon monoxide.

7. Solid Fuel Fires Aren’t Burning as Fast

In situations where your wood or coal stove is burning slower than usual or has trouble maintaining a flame, it could have a ventilation issue, increasing the risk of CO buildup.

Common Health Symptoms of CO Poisoning

If you fail to notice the initial warning signs of a carbon monoxide leak in time, the next clue might 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 household suddenly feels sick, especially together with any of the previously mentioned clues, move outdoors immediately and contact emergency services.

Prevent CO Poisoning and Gas Leaks with These Safety Tips

It’s always better to prevent issues than respond to them, especially regarding carbon monoxide. First, check that there are carbon monoxide detectors in appropriate places. Building codes mandate them in hallways near all bedrooms, on each level of the house and in rooms with fuel-burning appliances. For an additional safety measure, it’s smart to use interconnected detectors so that whenever one detects carbon monoxide, all of them will sound. Test these detectors monthly and change them when required, about every five to seven years.

Along with using carbon monoxide detectors, keep these safety precautions in mind:

• Schedule a certified technician to regularly inspect your heating system, fireplaces (both gas and wood), and all other fuel-burning appliances.
• Don’t allow anyone to use grills, portable backup generators or similar equipment inside, especially in small spaces.
• Run the kitchen exhaust fan when cooking with a gas stove, and avoid using these appliances for home heating.

At Service Experts Heating, Air Conditioning & Plumbing, we know the risks of carbon monoxide gas leaks. That’s why our team delivers fast, long-lasting solutions for your heating and ventilation needs. Our goal is to keep your home cozy, cost-efficient, and most importantly, safe and secure. Please contact us today to ensure you’re taking the proper precautions against carbon monoxide leaks.