What are the symptoms of carbon monoxide poisoning?

Carbon Monoxide Warning Signs

⚠️ Carbon monoxide (CO) is a silent killer - it's colourless and odourless. Know the symptoms to protect your family.

Early Symptoms (Low Exposure)

• Headaches - often described as a dull, throbbing pain
• Dizziness and light-headedness
• Nausea and stomach pain
• Tiredness and confusion
• Shortness of breath

Severe Symptoms (High Exposure)

• Difficulty breathing
• Loss of consciousness
• Seizures
• Chest pain
• Memory problems

Warning Signs in Your Home

• Yellow or orange flames on gas appliances (should be blue)
• Sooty marks on walls near appliances
• Pilot lights frequently blowing out
• Increased condensation on windows
• Symptoms improve when you leave the house

What To Do

1. Get everyone out of the property immediately
2. Open all windows and doors
3. Call 999 if anyone has symptoms
4. Turn off gas supply at the meter if safe
5. Don't go back inside until cleared by professionals

Prevention

• Install CO alarms - One on each floor, tested weekly
• Annual boiler service - Includes CO check with gas analyser
• Check ventilation - Never block air vents near gas appliances
• Gas Safety Certificate - Annual inspection catches problems early

NK Gas Services includes carbon monoxide testing with every boiler service. Book your annual service on 07404 922458.