Carbon monoxide call outs surge

The number of callouts for carbon monoxide emergencies in London has more than doubled in the last five years according to figures from the London Fire Brigade

There were 1,714 emergency callouts for firefighters between August 2024 and July 2025, Brigade data shows. This is up from 821 recorded between August 2019 and July 2020. In total, the Brigade has recorded 7,764 carbon monoxide-related incidents between August 2019 and July 2025, where carbon monoxide was suspected or confirmed.

Carbon monoxide fumes are highly poisonous fumes that are produced by the incomplete burning of fossil fuels (e.g. coal, gas, oil, wood). CO is difficult to detect because you cannot taste, see or smell it.

The fumes can be produced when appliances such as boilers, cookers, heaters, gas fires and solid fuel burners are faulty, have been incorrectly fitted, or not regularly serviced. It can also occur if flues, chimneys or vents are blocked or poorly maintained, either at home or at commercial premises.

The service warn the rise could be linked to the cost of living crisis, as people seek alternative ways to heat their homes, particularly during the colder months. Associated costs also mean that people may not be servicing their appliances as often as they should. 

Assistant Commissioner for Prevention & Protection, Pamela Oparaocha, said: “As we enter some of the coldest months of the year, it’s natural to want to heat homes in a cost-effective way, but keeping warm must be done in a safe way.

“As many households look for ways to manage rising energy costs, it’s important to stay mindful of safety - especially during the colder months.

"Some alternative heating methods, while well-intentioned, can carry serious risks. For instance, burning treated wood might seem like a cost-saving option, but it can release toxic fumes and is more likely to spit embers, which could ignite nearby materials.

"Another key precaution is ensuring that carbon monoxide alarms are installed and working properly. Carbon monoxide is a silent and invisible danger—you can’t see, smell, or taste it, but it can be fatal within minutes.

"Taking small steps to stay safe can make a big difference. We encourage everyone to look out for themselves and their neighbours this winter."

The brigade say CO alarms should be fitted in all rooms containing fuel burning appliances, ensuring that the alarm is able to be heard throughout the property.

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