Safety 1 March 2026 8 min read

Carbon Monoxide Safety: Protecting Your Family

Understanding the silent killer and how to keep your home safe with proper gas appliance maintenance and CO detectors.

Carbon monoxide (CO) is often called the "silent killer" - and for good reason. This colourless, odourless, and tasteless gas claims around 50 lives each year in the UK and sends thousands more to hospital. At Gas Care, the safety of families across Bradford, Leeds, and West Yorkshire is our top priority.

Emergency: If You Suspect a CO Leak

  1. 1 Stop using all appliances and turn them off
  2. 2 Open all doors and windows to ventilate
  3. 3 Leave the property immediately
  4. 4 Call the Gas Emergency line: 0800 111 999
  5. 5 Seek medical attention if anyone feels unwell

What is Carbon Monoxide?

Carbon monoxide is a poisonous gas produced when fuels like gas, oil, coal, or wood don't burn completely. In homes, the most common sources are:

Gas boilers & heating
Gas cookers & ovens
Gas fires
Blocked chimneys/flues

Symptoms of Carbon Monoxide Poisoning

CO poisoning symptoms are often mistaken for flu or food poisoning. Be alert to:

Early/Mild Symptoms

  • Headaches
  • Dizziness
  • Nausea
  • Tiredness and confusion
  • Shortness of breath

Severe Symptoms

  • Impaired vision
  • Loss of consciousness
  • Vertigo
  • Memory problems
  • Difficulty thinking clearly

Key warning sign: Symptoms improve when you leave the house and return when you come back. If multiple people in your household experience similar symptoms simultaneously, suspect CO immediately.

Warning Signs of a CO Leak

While CO itself is undetectable without an alarm, these signs may indicate a problem:

Yellow/Orange Flame

Should be blue

Soot or Staining

Around appliances

Pilot Lights

Frequently blow out

Excess Condensation

On windows

Installing Carbon Monoxide Detectors

A CO alarm is your first line of defence. Here's what you need to know:

Where to Install CO Alarms

In every room with a gas appliance
In hallways near bedrooms
At head height or on ceiling
1+ metre from fuel-burning appliances

Preventing Carbon Monoxide in Your Home

1

Annual Gas Appliance Servicing

The single most important thing you can do. Our Gas Safe registered engineers check for CO leaks, ensure proper combustion, and verify adequate ventilation.

2

Never Block Ventilation

Never block air vents in walls or windows, flues or chimneys, or air bricks.

3

Don't Use Outdoor Appliances Indoors

Never use barbecues, camping stoves, or patio heaters indoors or in enclosed spaces.

4

Keep Chimneys and Flues Clear

Have chimneys swept annually and ensure flues are not blocked by debris, birds' nests, or snow.

Useful Resources