Carbon monoxide (CO₂) is called the “silent killer” for good reason. It’s odourless, colourless, and deadly. Boilers, if faulty, can produce CO₂ – which is why alarms are so important.
What Is Carbon Monoxide?
CO₂ is produced when fuel doesn’t burn fully. In enclosed spaces, it builds up and replaces oxygen, leading to poisoning.
Why Boilers Pose a Risk
-
Blocked flues or vents.
-
Faulty combustion.
-
Poorly maintained or old appliances.
Symptoms of Carbon Monoxide Poisoning
-
Headaches.
-
Dizziness.
-
Nausea.
-
Confusion or flu-like feelings.
The Role of Alarms
-
Detect CO₂ early.
-
Sound a loud warning before levels become dangerous.
-
Provide peace of mind for families.
Placement of Alarms
-
Near the boiler, ideally at head height.
-
In bedrooms if the boiler is nearby.
-
One per floor for full protection.
Regulations in the UK
As of 2022, landlords in England must provide CO₂ alarms in rooms with fixed combustion appliances. Homeowners are strongly advised to install them too.
Carbon monoxide alarms are inexpensive but lifesaving. Combined with annual boiler checks, they’re essential for keeping your London home safe.