07951 521 281 [email protected]

Boiler Breakdown
North London

Gas & Heating specialists



CALL 07951 521 281

In the Media

Jeremy Vine Show

David Butler on the
Jeremy Vine Show
BBC2 Radio

Plumbing Services

Burst Pipes
Unblock Drains
Showers Installation
Toilet / Bathroom Repairs
Replacement Waste Disposal Units

Capitalboilers – your North London based Gas Safe Registered Heating and Boiler Breakdown North London, that are operating a 24-Hour Response to Boiler Breakdowns and Plumbing Emergencies – Above all, we are trusted heating specialists that give 1 Year Guarantee on our Work. Call 07951 521 281

gas-safe logo

Gas Safe Reg No: 139826

Capital Boilers is Gas Safe registered and carry ID.

Do You Smell Gas?

Do You Suspect a Gas Leak?


0800 111 999


0800 371 787


  • Put out naked gas flames
  • Turn off the meter at the control valve
  • Open doors and windows
  • Keep people away from the affected area
  • Get medical help if you are feeling unwell


  • Smoke or strike matches
  • Turn electrical switches on or off

Switch Off Your Gas

Gas Valve on offFind the Isolation Valve at your meter. To turn off the valve simply pull or push the valve into a horizontal position so it sits at a 90 Degrees angle to the valve.

Services: Heating & Plumbing

Code of Practice: Turn up on Time - Work Professionally according to the Codes of Building Practice - Customer Satisfaction

Gas Heating & Boiler Services

Heating Services

  • Fitting, Repair & Replacement of all Types of Boilers
  • Radiators and Thermostatic Radiator Valves
  • Pumps, all Valves and Central Heating Controls
  • Thermostats and Carbon Monoxide Controls
  • Tanks and Cylinders Replacements
  • Immersion Heater Fit/Replacements
  • Heat Exchangers
  • System Descaling, Cleaning and Power Flushing
  • Domestic Water Heaters, Gas Fires, Gas Cookers/Hobs
  • Gas Safety Inspection / Certificates

Boiler Types

  • High Efficiency Boiler (e.g. Condensing System Boiler)
  • High Performance Combi (e.g. Storage Combi Boiler)
  • Combination Boiler
  • System Boiler
  • Cast Iron Boiler
  • Floor Standing Boiler
  • Back Boiler
  • Forefront Boiler

Boiler Makes

Saurier Duval
Chaffoteaux & Maury

Power-Flushing your Heating System Saves Money

Over time, sludge, rust and other corrosion build up up in your central heating system, clogging your radiators, pipes and boiler and causing noise, reduced efficiency and potentially boiler failure. By pumping cleansing agents around your entire central heating system, we can flush out ALL the corrosion and sludge – not just in the radiators and boiler, but in the pipework too, even in those impossible-to-reach places under the floorboards! – giving you lower heating bills, extending the life of your boiler and the rest of your system, and saving you money!

 Plumbing Services

  • Burst Pipes and Unblock Drains
  • Installation of all Types of Showers
  • Toilet/Bath/Sinks Repair/Replacement
  • Dripping Taps
  • Replacing taps (sink, basin or bath)
  • Replacing Ball Valves
  • Installation of Washing Machines
  • Waste Disposal Units
  • Installation of Dishwashers
  • Toilet Repairs and Overflows
  • Replacing Taps
  • Replacing a Bathroom Suite

Save up to £305 per Year by Upgrading your Boiler!

According to the Energy Savings Trust a new boilers have A-rated efficiencies of 90% or more meaning that they use less fuel, resulting in lower running costs and CO2 emissions. As boilers account for around 55 per cent of what you spend in a year on energy bills, upgrading from G-rated with no controls, to A-rated high-efficiency condensing boiler and full set of heating controls will significantly cut your home's CO2 emissions - AND could save you as much as £305 a year.

“Modern boilers are more efficient for several reasons, but their main advantage is that they are all condensing boilers. All well-maintained boilers burn their fuel very efficiently, but they inevitably loose some heat in the hot gases that escape up the flue. A Condensing Boiler has a bigger heat exchanger, so it recovers more heat, sends cooler gases up the flue and is more efficient.
Sometimes the flue gases get so cool that the water vapour in the gas condenses out (hence the name). When this happens, even more energy is recovered from the condensing vapour, and the efficiency gets higher still.” (Energy Savings Trust)

Gas Safety

Gas Safety | CO2 - Carbon Monoxide | What To Do

What is Carbon Monoxide?

“Carbon monoxide (CO) is a colourless, odourless, tasteless, poisonous gas produced by incomplete burning of carbon-based fuels, including gas, oil, wood and coal. Carbon-based fuels are safe to use. It is only when the fuel does not burn properly that excess CO is produced, which is poisonous. When CO enters the body, it prevents the blood from bringing oxygen to cells, tissues, and organs. “

What are the symptoms of Carbon Monoxide Poisoning ?

Early symptoms of carbon monoxide (CO) poisoning can mimic many common ailments and may easily be confused with food poisoning, viral infections, flu or simple tiredness. Symptoms to look out for include: – headaches or dizziness – breathlessness and tiredness – nausea and loss of consciousness – pains in the chest or stomach – erratic behaviour and/or visual problems

Gas Safety Checks - It's the Law

Home Owners - Landlords - Estate Agents - Property Managers Keep your properties Gas Safety Records up-to-date with attractive discounts from Capital Boilers. A Gas Safety Record (also known as Certificate) is a record, that is required by law to be held for all rental accommodation in the UK where there are gas appliances present. Gas Safety Regulations 1998 require all gas appliances in a rented property to be checked annually, complete a gas safety record and a copy provided to tenants.


Trusted Gas Safe Heating Specialist All North London Postcodes | 07951 521 281

Free Estimates

You only pay for the work done

1 Year Guarantee

Who is Capital Boilers

Capital Boilers is a Heating and Plumbing Service based in Turnpike Lane, North London. A family-run business offering a prompt, professional and friendly service. Any engineer representing Capital Boilers is fully trained, qualified and  Gas Safe registerd. We specialise in Boiler Breakdowns and replacements.

The Services

Although specialised in Boiler and Heating Systems all calls for the smaller plumbing jobs are appreciated. 80% of parts are carried in the vans. All other parts can be sourced within 24 hours – so you, the customer, do not have to wait in the cold.

Capitalboilers :  In the Media


"Thermostat Wars" Jeremy Vine interviews David Butler

Jeremy Vine Show on BBC2 Radio 01/03/18 | CLICK TO LISTEN

boiler manufature we service on breakdown

Frequently Asked Questions

If we have not answered your question, call us on 07951 521 281

Do you have a call-out charge?

Quotations on new boilers and radiators usually (with few exceptions) do not carry a call-out charge and a price for the whole project is given to the customer. For repairs we charge a Diagnostics Charge of £75 which is credited back to the customer as the first hours labour when the repair is carried out (most repairs can be carried out within that first hour).

I need a new boiler. Do you charge me a call out to give me a quote on a new boiler?

No. If you need a new boiler fitted Capital Boilers is happy to come to your home and give you a FREE quote

I want a radiator fitted in my home. Will you charge me to have a look ?

No. Capital Boilers is happy to come to your home to give you a price on fitting only or supply and fit you new radiator for you.

Do you take the old boiler/radiators away or do I pay for that extra?

Old boilers are taken for recycling at no cost and any mess is cleared. However we do not box-in pipework unless specified at the the time of the quote.

If you repair my boiler and a month later it breaks down again will you charge me again?

No, there is no charge. Any work carried out by Capital Boilers is guarantee for 1 year which includes any parts fitted that were supplied by the engineer.

If I call out Capital Boilers to come to my home to repair my boiler how are the charges broken down?

Capital Boilers always aim to repair your boiler as quickly as possible and the engineer will diagnose any fault as soon as he can and will charge £75 as well as tell you the cost of repair and if any parts are needed.

If Capital Boilers fitted my new boiler and after 3 months it brakes down do I call the manufacture or Capital Boilers?

The recommendation is to call us first because it is a quicker process for you. The engineer will get there the same day or the next. Once the new boiler has been assessed the engineer will know if it is a manufacture repair or not and take the appropriate action.

What is an annual service and why do I need it done?

It is very important that you get your boiler serviced each year. All manufacturers and Gas Safe advises that it should be done. A service ensures that your gas boiler is safe and working correctly. You may also find that your Home Insurance Company insists on a boiler service for your yearly cover – check your policy for details.

Can I buy the part myself and you fit it for me ?

Yes. You can buy your own parts, BUT no guarantee can be issued for it by Capital Boilers for you. Should you supply the wrong part in error a fitting payment will still be required.

I have been told my fan in the boiler is broken. Do I have to get the fan for you to fix it for me?

No. Please, don’t buy anything until the engineer has diagnosed why the fan is not working. Should it need a replacement fan it will be supplied for you, with a 1 Year Guarantee.

Do you only fix/install boilers?

No. Capital Boilers can also fit gas hobs, gas firers, gas cookers, gas water heaters and gas boilers. For a full listing of all Heating and Plumbing Services please go to the menu and click on ‘Services’

My landlord asked me to call Capital Boilers to repair my boiler. Do you invoice him?

Only if your landlord is an account customer with Capital Boilers he will be invoiced. If you have been instructed to call us without your landlord being an account customer, we will usually ask you for the payment and give you a receipt.

I smelled gas and called out Tranco (National Grid) who turn my gas off. They told me I MUST use a qualified gas engineer to repair the leak. Is this something Capital Boilers can do?

Yes. Capital Boilers is fully qualified and registered with Gas Safe to do this work for you. The gas leak will be found and repaired safely.

Why is my hot water not as hot as it used to be?

You may find that you have a small problem with your boiler. There are a some tests that the engineer can carry out to identify any faults. If a fault is diagnosed he will tell you the cost and of course you will get a one year guarantee on the work.

Can you carry out testing and provide Landlords Gas Safety Certificates?

Yes. Discounts are available for 5 and 10 bookings for the same day. All you need to do is call David on 07951 521 281 to make the booking.

We are moving home to a new house. Can your company come and disconnect our cooker, washing machine and dishwasher as well as reinstall them in our new house?

Yes. At the same time Capital Boilers can check your boiler in your new home for you and tell you how to use it safely.

I called out a plumber to fix my boiler and he told me that he doesn't do that job. I thought ALL plumbers fix boilers?

No, not all plumbers repair boilers. 90 % of plumbers only deal with the water side of plumbing (e.g toilet, sink, bath etc) and are often not ‘Gas Safe’ (previously Corgi) registered. Heating engineers (like Capital Boilers) can do the heating and the water side of any plumbing job.


24-Hour Contact
Emergency Boilder Breakdown across North London


07951 521 281




[email protected]

David Butler

10 Alfoxton Ave