Gas is widely used for heating, cooking and hot water. It is safe when used correctly, but faulty appliances or leaks can be dangerous.
Gas problems can cause fires, explosions and carbon monoxide poisoning.
This guide explains how to stay safe and what to do if something goes wrong.
Common risks in the home
Gas risks can develop over time or from unsafe use.
Common hazards include:
- gas appliances that are not serviced regularly
- blocked vents or flues
- incorrectly installed appliances
- damaged or faulty equipment
- poor ventilation in rooms with gas appliances
Knowing these risks can help you prevent serious incidents.
Simple safety steps
Follow these steps to reduce the risk of gas problems in your home.
Do
- have gas appliances serviced every year
- use a Gas Safe registered engineer for all gas work
- install a carbon monoxide alarm near every gas fuel appliance in your home
- keep vents and air bricks clear
- ask for permission before install a gas appliance
- follow the manufacturer’s instructions for appliances
Do not
- try to repair or install gas appliances yourself
- block ventilation or air vents
- use appliances if you think they are unsafe
- ignore warning signs of gas problems
Carbon monoxide safety
Carbon monoxide is a poisonous gas. You cannot see it, smell it or taste it. It can be produced by gas appliances that are not working properly.
Symptoms of carbon monoxide poisoning
- headaches
- dizziness
- nausea or vomiting
- shortness of breath
- confusion
- loss of consciousness in severe cases
If you think you have been exposed, get fresh air immediately and seek medical help.
Protect yourself
- install a carbon monoxide alarm, where applicable and test it regularly
- never ignore an alarm sounding
- have appliances checked every year
Warning signs of gas problems
You should act quickly if you notice:
- a smell of gas (strong, sharp, and unpleasant sulphurous smell)
- yellow or orange flames instead of blue
- soot or staining around appliances
- pilot lights that go out often
- unusual condensation on windows
These signs may mean your appliances are not working safely.
What to do in an emergency
If you smell gas
- open doors and windows
- turn off the gas supply if it is safe to do so (turn off red handle lever near the meter or at each appliance)
- do not use electrical switches or naked flames
- leave the property
- call the National Gas on 0800 111 999
- then call us
If you suspect carbon monoxide
- get fresh air immediately
- leave the property
- seek medical advice
- do not return until it has been checked
When to get professional help
You should always use a qualified professional for gas work.
Contact a Gas Safe registered engineer if you need:
- annual servicing of appliances
- installation or replacement of gas equipment
- repairs to faults or leaks
- safety checks
- get advice and approval before installing a solid fuel heating appliance, for example a wood burner
If you are a landlord, you must arrange annual gas safety checks for your tenants.
Report a repair
Safety checklist
Use this checklist to help keep your home safe:
- gas appliances are serviced every year
- a carbon monoxide alarm is installed and working
- vents and airways are clear
- you use a Gas Safe registered engineer
- you know what to do in an emergency
Keeping your home safe
Gas safety depends on regular checks and acting quickly when something is wrong.
Simple steps can help protect you, your home and the people in it.