Carbon Monoxide Safety — What Every Homeowner Needs to Know

What Is Carbon Monoxide?

Carbon monoxide (CO) is a colourless, odourless, tasteless gas produced by the incomplete combustion of fuels — including gas, oil, LPG, wood, and coal. It's often called the "silent killer" because you cannot detect it without a monitor.

Sources of CO in the Home

Any fuel-burning appliance can produce CO if faulty or poorly ventilated:

Symptoms of CO Poisoning

CO poisoning symptoms can be mistaken for flu:

If multiple people in the house feel unwell at the same time, or symptoms improve when you leave the house, suspect CO poisoning immediately.

What to Do If You Suspect a CO Leak

1. Get out of the house immediately — don't stop to open windows or turn things off

2. Call 999 and the National Gas Emergency line: 0800 111 999

3. Do not re-enter the property until it has been declared safe by engineers

4. Seek medical attention — even if you feel OK, tell the doctor you may have been exposed to CO

Protecting Your Home

Halo Heating's annual boiler service includes a CO check. Call 01483 676108 to book.