← Back to categories
⚠️
Problem Guides

Gas & Carbon Monoxide Safety

Gas leaks, carbon monoxide, pilot lights and emergency situations

5 free DIY guides · 17 total

Gas safety is not something to diagnose yourself — but knowing the warning signs of a gas leak or carbon monoxide build-up could save lives. In the UK, all gas work must be carried out by a Gas Safe registered engineer; it is a criminal offence for anyone else to do it. These guides explain the warning signs to watch for, what to do in a gas emergency, how carbon monoxide detectors work and where to position them, and why an annual boiler service is a legal requirement for landlords. If you smell gas, leave the property immediately and call the Gas Emergency Service on 0800 111 999.

Most popular
1

Boiler Ventilation Requirements — Is Your Boiler Room Safe?

Understanding ventilation requirements for gas boilers in cupboards, utility rooms, and garages

2

How to check a gas engineer is Gas Safe registered

Verifying an engineer's registration before letting them work on your gas

3

Where to Put Carbon Monoxide Detectors in Your Home

CO alarms only protect you if they're in the right places. Most homes don't have enough of them.

All guides
Boiler Keeps Locking Out — When Is It Safe to Reset?
Boiler lockouts are safety shutdowns. Resetting without understanding the cause can be unsafe.· 15 min
›
Boiler Pilot Light Keeps Going Out
A pilot light that won't stay lit is usually a faulty thermocouple, draught, or gas supply problem.· 1–2 hrs
›
Boiler Ventilation Requirements — Is Your Boiler Room Safe?
Understanding ventilation requirements for gas boilers in cupboards, utility rooms, and garages· 1–2 hrs (inspection)
›
Boiler flue safety — what to look out for
Signs of a dangerous or blocked flue on a gas boiler· 30 min check
›
Carbon Monoxide Alarm Going Off — What to Do
A CO alarm is a life-threatening emergency. Act immediately — do not wait to see if it stops.
›
Carbon monoxide alarm has gone off — what to do
Immediate steps when a CO alarm activates in your home· Immediate
›
Carbon monoxide poisoning — symptoms and what to doFree
Recognise CO poisoning and take the right action immediately· Immediate
›
Gas safety certificate (CP12) — what landlords need to know
Legal requirements for landlords under Gas Safety Regulations 1998· 45–60 min
›
How to check a gas engineer is Gas Safe registeredFree
Verifying an engineer's registration before letting them work on your gas· 2 min
›
I Can Smell Gas in My House — What Should I Do?
A gas smell indoors is a serious emergency. Here is exactly what to do in the right order.
›
I can smell gas — what do I do right now?Free
Immediate steps when you smell gas at home· Immediate
›
Landlord Gas Safety Certificate — What You Need to Know
What is required, how often, and what the CP12 certificate covers· Annual
›
Landlord gas safety certificates — what you need to know
Legal requirements for landlords and what a CP12 certificate covers· 30–60 min per property
›
Signs your boiler may be unsafe — when to turn it off
Warning signs that your boiler could be dangerous and needs urgent attention· Immediate
›
Smell of gas in the house — what to do now
Immediate steps when you suspect a gas leak at home· Immediate
›
Where to Put Carbon Monoxide Detectors in Your HomeFree
CO alarms only protect you if they're in the right places. Most homes don't have enough of them.· 30 min
›
Where to fit carbon monoxide alarms in your homeFree
BS EN 50291 guidance on CO alarm placement and types· 15–30 min
›

Can't find your problem?

Request a guide and we'll write it — usually within a few days.

Request a guide →