Fit an audible carbon monoxide alarm: They need to be put in a central location in the house and can be fixed to the wall or can be placed on a table, bookshelf or shelf.
Don't block ventilation and have chimneys swept at least once a year.
Know the main symptoms: headaches, dizziness, nausea, breathlessness, collapsing and loss of consciousness.
Keys signs are if symptoms clear up when you are away from home and come back when you return, or if other people in your household experience similar symptoms.
Watch out for soot or yellow/brown staining on or around your appliance.
Millions still at risk from carbon monoxide poisoning
At least 35 million people in Britain are still at risk from carbon monoxide poisoning, a new survey has found.
A survey for the Carbon Monoxide - Be Alarmed! campaign - found that people mistakenly think that their smoke alarm will detect carbon monoxide.
The Department of Health estimates that 50 people are killed by carbon monoxide poisoning, and at least 4,000 are treated in hospital, in the UK each year.
ITV's Daybreak has been told of the 'deadly' nature of carbon monoxide fumes, thought to have killed teenager Hannah Thomas-Jones.
President of the Carbon Monoxide and Gas Safety Society, Stephanie Trotter, said there needs to be better government warnings about items like the disposable barbecue.