A boiler that has stopped working completely is stressful, especially in winter. Call 020 7183 4810 and we will get an engineer to you fast, often the same day.
Boiler completely stopped working?
Same-day emergency call-outs across London.
Need a Gas Safe engineer today?
Same day callouts across Central and West London, fixed quotes and fully guaranteed work.
What might be happening
A boiler can stop for many reasons — low pressure, a tripped electrical supply, a failed component, ignition failure, or a fault picked up by the boiler’s own safety systems shutting it down. Some causes are simple, others need proper diagnostic equipment to identify safely.
Before you call — a few safe checks
- Check your thermostat is set correctly and has power
- Check the boiler display for any error codes (note them down for the engineer)
- Check your electricity supply has not tripped at the fuse box
Beyond these basic checks, we would not recommend opening up the boiler yourself — internal faults need Gas Safe diagnosis.
Why we do not recommend the popular online fixes
| Common online advice | Why it falls short |
|---|---|
| “Reset the boiler repeatedly” | Repeated resets without diagnosis can mask a developing fault or safety lockout. |
| “Open the casing and check the parts” | Internal boiler components involve gas and electrics that should only be handled by a Gas Safe engineer. |
Smell gas alongside the fault?
Turn off the gas at the emergency control valve, ventilate the property, avoid naked flames or switches, and leave the building.
Call the National Gas Emergency Service on 0800 111 999, then call us on 020 7183 4810.
What it costs to wait
Leaving a broken boiler without heating or hot water for days is uncomfortable and, in cold weather, can risk frozen pipes. Getting it looked at quickly usually means a faster, cheaper fix than letting the issue sit.
How Olia’s Plumbing & Heating handles it
- Call 020 7183 4810 and describe the fault and any error codes
- We book a Gas Safe registered engineer, often same-day
- We diagnose and quote before any repair work
- We get your heating and hot water back on as quickly as possible
Get your boiler fixed today
Fast, reliable emergency call-outs across London.
Frequently asked questions
How quickly can you come out?
We offer same-day appointments in most cases. Call 020 7183 4810 to check availability in your area.
Is it safe to leave the boiler off overnight?
Generally yes, though in very cold weather leaving heating off risks frozen pipes — call us to book a repair as soon as possible.
How much will the repair cost?
It depends on the fault. We will give you a clear price after diagnosis, before any work starts.
Do not spend the evening troubleshooting alone. Call 020 7183 4810 now.
Related services: Boiler Repair Central London, Signs Your Boiler Needs Repair, Boiler Repair or Replacement: What Makes Sense
Peyman
CEO & Founder — Gas Safe Registered Engineer
Peyman is the founder of Olia's Plumbing & Heating, a London based team with over 15 years of hands on experience in boiler installation and repair, central heating, gas work and emergency plumbing. He personally oversees jobs across Central and West London and writes these guides to help homeowners understand their heating systems.
- Gas Safe Registered
- 15+ years experience
- Covering all of London
