24/7 emergency boiler repairin Harrow and North West London,day or night
No heating or hot water? Call a Gas Safe registered engineer any hour, any day, and get your home safe and warm again.
Open 24 hours, 7 days a week · Gas Safe 961481
20 years
trade experience
Gas Safe
Registered no. 961481
£10m
public liability cover
24/7
emergency service
10 years
copper pipework guarantee
Service overview
Emergency Boiler Repair (24/7): what it is and when you need it
What it is
Emergency boiler repair is an urgent call-out for a boiler breakdown or heating fault that cannot wait for a normal appointment: no heating in cold weather, no hot water, a leaking boiler or a boiler that will not stay on.
Who it's for
Families with young children or elderly relatives, people working from home, and landlords with tenants who have lost heating or hot water.
When you need it
Any time the loss of heat or hot water puts comfort, health or property at risk, including nights, weekends and bank holidays.
Why use a professional
A fast, safe response limits damage and discomfort. Gas appliance work must be carried out by a Gas Safe registered engineer. If you smell gas, call the National Gas Emergency number on 0800 111 999 first.
The cost of waiting
What happens if you leave it
In an emergency, every hour without heat or with a leak makes things worse.
Risks if it's ignored
- Leaks spread into ceilings, floors and electrics.
- Cold homes are a real health risk for the very young and elderly.
- Pipes are more likely to freeze when a home is left unheated in winter.
- Tenants left without heating or hot water can lead to complaints and legal obligations for landlords.
Common mistakes we see
- Waiting until the morning or after the weekend when the problem is getting worse.
- Opening the boiler case or attempting gas repairs yourself.
- Ignoring the smell of gas: always call 0800 111 999 and leave the property.
- Not knowing where your stopcock or gas meter control valve is.
Our process
How we handle your emergency boiler repair (24/7)
01
Call any time
Ring 07843 900760. We take the details and give you safe first steps.
02
Make safe
On arrival we make the system safe and stop any leak.
03
Diagnose
We find the cause of the breakdown.
04
Repair
Where possible we repair on the spot; if parts are needed, we explain the plan.
05
Test & sign off
We test the boiler for safe operation before leaving.
What you get
The benefits of doing it properly
Genuinely 24/7
Open every hour of every day, including weekends.
Safety first
Gas Safe registered engineers make your home safe before anything else.
Limit damage
Fast action stops leaks before they spread.
Local
Based in Harrow, covering North West London and Hertfordshire.
Experienced
20 years of fixing breakdowns in local homes.
Insured
£10 million public liability cover.
In detail
What counts as a heating emergency
Not every fault is an emergency, but these situations should not wait.
No heating in cold weather
Especially where there are children, elderly or vulnerable people in the home.
Boiler or pipe leaks
Water near electrics or coming through a ceiling needs immediate attention. Turn off the water at the stopcock while you wait.
Boiler repeatedly locking out
A boiler that keeps shutting down can point to a fault with ignition, flue or pressure.
No hot water
For households that rely on hot water for care, hygiene or young children.
Landlord emergencies
Tenants without heating or hot water need a prompt response. We work with landlords across Harrow and North West London.
If you smell gas
Do not use switches or naked flames, open windows, turn off the gas at the meter if safe to do so, leave the property and call the National Gas Emergency Service on 0800 111 999.
Useful guide
What to do while you wait for an emergency engineer
If water is leaking, turn off the water at the stopcock (usually under the kitchen sink) and switch off the boiler. Place towels or a bowl under the leak and move anything electrical away from the water. If a ceiling is bulging with water, keep clear of it.
If your heating has failed in cold weather, keep doors closed to hold heat in the rooms you're using, and use safe electric heaters if you have them. Keep an eye on vulnerable people in the house.
For a frozen condensate pipe (common in a cold snap on condensing boilers), pouring warm, not boiling, water along the outside section of the pipe can thaw it. If you're not sure, call us and we'll talk you through it.
If you smell gas, do not use switches or naked flames, open windows, turn off the gas at the meter if it is safe, leave the property and call 0800 111 999.
When you call, have the make and model of your boiler, any fault code on the display and the pressure reading ready if you can. Tell us who is in the home, especially young children, elderly or vulnerable people, so we understand how urgent the situation is. This helps us give you the right advice straight away and arrive prepared.
Why J&L
Why homeowners and landlords call us
J&L Gas & Renewables Limited is a Gas Safe registered heating and gas engineering company based in Harrow, registration number 961481. We bring 20 years of trade experience to every job, from a single repair to a full heating system.
We are approved installers for Worcester Bosch and Vaillant, so new boilers can come with manufacturer warranties of up to 10 years. Copper pipework we install carries a 10-year guarantee, and we carry £10 million public liability cover.
Our pricing is clear: Landlord Gas Safety Certificates cost £75, boiler services start from £100, and a combined certificate and service starts from £150. Installations are quoted individually after a survey. If anything isn't right after an installation, we commit to putting it right until you're fully satisfied.
Local service
Emergency Boiler Repair (24/7) across North West London and Hertfordshire
We're based at Banner House, 29 Byron Road, Harrow, and cover homes and rental properties in these areas:
- Harrow
- London
- Watford
- Stanmore
- Radlett
- St Albans
- Bushey
- Rickmansworth
- Hemel Hempstead
- Barnet
- Pinner
- Edgware
- Wembley
- Ruislip
- Northwood
- Borehamwood
- Mill Hill
- Kings Langley
Related services
You might also need
Questions
Emergency Boiler Repair (24/7) FAQs
Can't see your question? Call 07843 900760; our emergency heating service runs 24/7.
Are you really available 24 hours a day?
Yes. We are open 24 hours, 7 days a week, for breakdowns and heating faults.
What should I do if I smell gas?
Leave the property, avoid switches and flames, and call the National Gas Emergency Service on 0800 111 999 straight away. Once it is safe, we can repair the appliance.
Which areas do you cover for emergencies?
Harrow, London, Watford, Stanmore, Edgware, Pinner, Wembley, Barnet, Bushey and the rest of our North West London and Hertfordshire area.
Do you handle emergencies for landlords?
Yes. We help landlords restore heating and hot water for tenants quickly.
Do you charge more at night or weekends?
Call us for a price when you get in touch. We'll explain the cost before we attend.
Can you help with a frozen condensate pipe?
Yes. We can clear it and advise on protecting or re-routing the pipe so it doesn't freeze again.
Do you cover St Albans and Hemel Hempstead out of hours?
Our 24/7 service covers our full area, including St Albans, Hemel Hempstead and Kings Langley.
Do you offer a 24/7 emergency service?
Yes. J&L Gas & Renewables runs a 24/7 emergency service for boiler breakdowns and heating faults across Harrow, North West London and Hertfordshire. Call us at any hour and speak to us directly.
Are your engineers Gas Safe registered and insured?
Yes. We are Gas Safe registered (number 961481) and carry £10 million public liability cover. You can check our registration on the Gas Safe Register before we arrive.
How do I pay?
Payment is by bank transfer on invoice. For boiler installations over £2,000 we usually ask for a 50% deposit. Payment timing is agreed with your quote.
Get your emergency boiler repair (24/7)sorted by a Gas Safe engineer.
1. You call or send the form
Tell us what you need, your postcode and the best time to reach you. Let us know whether you need an installation, servicing or emergency heating help.
2. You get a clear price
CP12 certificates cost £75, servicing starts from £100 and combined visits start from £150. For bigger jobs, a written quote after we've seen the work, so there are no surprises later.
3. We do the work properly
A Gas Safe registered engineer completes the job, tests it and explains what was done. Payment is by bank transfer on invoice.
Call now for a clear price and a straight answer. Gas Safe registered 961481, £10m insured, 20 years' experience.