← 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

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.

3

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.

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 →