Carbon monoxide (CO) is an invisible gas that can cause serious illness, brain damage and even death. You can't see, smell or taste it, so it's very hard to detect without a CO alarm.
CO is produced when fuels, such as natural gas, wood, coal or propane, are burned incompletely (because an appliance is faulty or there's a blocked flue or chimney, for example).
Common sources of carbon monoxide will come from your:
If you have a gas boiler in your home, it’s important to allow Habinteg’s contractors to service it each year. During the service visit, a gas engineer will also check your CO alarm and, if it’s not working properly and they need to, they'll replace the alarm. Find out more about gas safety here.
Carbon monoxide alarms in your home can be battery powered or hard wired into your mains supply. They should be placed up high, about 1 to 3 metres from the gas or fossil fuel appliance you're monitoring for leaks. They can be on a shelf, fixed to a wall or a ceiling, or free standing.
You need to ensure alarms aren't covered or blocked by anything. If on a ceiling, the alarm should be mounted at least 30cm from any wall. If on a wall, the alarm should be mounted at least 15cm from the ceiling, but as a rule, placing an alarm at head height is sufficient.
Note that CO can also come from any fuel-burning appliance such as:
- Oil or solid fuel cookers
- Gas or paraffin heaters
- Oil and gas boilers
- Portable generators
- Wood or gas fireplaces
- Cigarette smoke.
Symptoms of mild carbon monoxide poisoning include slight headache, nausea, vomiting, fatigue, moving to severe headache, drowsiness, confusion and fast heart rate in medium symptoms. CO symptoms are often described as ‘flu-like’.
If you think you may have a carbon monoxide leak:
- Open all doors and windows.
- Turn off any appliances, if possible.
- You and anyone else in your home should then leave the property.
- Once you’re a safe distance away, call the National Gas Service on 0800 111 999 and report the leak.
Seek medical help for anyone you think might have carbon monoxide poisoning. Don't go back inside your home until you're told it's safe to do so by the National Gas Service or a gas engineer.