The worst thing about having a boiler breakdown is that it can happen when you’re least expecting it. If this does happen it’s often an extremely stressful experience.

At Avenue Heating we know that you want your boiler fixed as quickly and affordably possible. If an emergency arises, then we could get the job done in under 24 hours.

Boiler Servicing and repair with Avenue Heating


Every boiler needs upgrading at some point, maybe it is too old, no longer working properly, or it may have been condemned.

There are some common reasons for needing a new boiler installation:

Boiler Repair & Servicing from Avenue heating



A Combi boiler provides an unlimited, instantaneous hot water supply, in addition to your central heating requirements.

Combi boilers are fantastic for smaller houses, like flats or small houses, where space is a bit tight. A combination boiler is very energy efficient and cost-effective as water is only heated when you need it and not heated and stored.

The downside to combi boilers is that when there are two or more taps being used together, it can reduce the flow rate of the hot water as the water comes directly from the mains water supply. 


This type of boiler is only a heat source, you can either use it to heat your radiators or under-floor heating, or you can use it to heat the water in your hot water cylinder.

These boilers are similar to conventional boilers, with the exception that they contain additional components, such as a central heating pump, pressure relief valve, and expansion vessel.

System boilers, like combination boilers, are installed as part of a “sealed” heating system, meaning, if also fitted with an unvented cylinder, there is no need for any tanks in your loft.


Although conventional boilers have no additional components, they also act as a heat source, like system boilers.

They are sometimes installed in a ‘classic’ type of heating system, where there may be a cylinder, along with pumps to boost water pressure to baths and showers.

Boilers of this type are suitable for older heating systems, where increased pressures may cause problems with leaks, etc . 




When you contact us about a new gas boiler installation, we will gather as much information as possible and if necessary, one of our professional heating engineers will visit your home to conduct a full survey at a time that suits you


When we are confident that the suggested boiler is right for you and your home, we will send you a free, no-obligation quote.


When the quote is agreed, we will arrange an installation date and book you in, following which the deposit invoice for the work will be sent to you.

We will typically arrive between 8-9 AM on the day of installation and finish between 3-6 PM. If it is a large installation, we may need to return for a second even third day to complete the work.

During the work, we will provide regular updates as to what we are doing and any abnormalities or issues we come up against.


Invariably while carrying out any boiler installation, there is likely to be something that wasn’t accounted for, such as previous poor workmanship or things such as birds and wasps nests! But you can be confident, no matter what we find, our gas safe registered engineers have the skill and experience to find a suitable solution to the problem, as it will not be the first time we have come across it!


Once the job is completed, we will fully test and commission the boiler and provide you with the completed manufacturers’ benchmark, after talking you through any {user controls| or other information that you may need to know with your new boiler. 

If we sounds like the type of company that you would like to have working in your home, please don’t hesitate to get on contact today! Call 0203 137 3333 or just fill in the form below and we will contact you to discuss your options!


Avenue Heating are able to assist you with all of your homes plumbing and heating requirements.


Don't take our word for it, have a look at what our customers say about working with us.


We provide estimates before work commences. Our invoices will always show a full breakdown of costs.


We cover Watford, Rickmansworth, Chorleywood, St.Albans, Finchley, Harrow and surrounding areas

– Call the National Grid UK on 0800 111 999, any time, day or night!
– Extinguish all naked flames and do not smoke or light anything.
– Do not touch any electrical switches, turning on or off.
– Turn the gas off at the meter (generally outside the house).
– Open all doors and windows.
– Get everyone out of the area

YES – It is recommended that boilers are serviced annually and you hold a gas safety certificate for your home

– You can catch boiler problems early before they develop and avoid the need for boiler repair
– It is cheaper than replacing your boiler
– It will save money on your energy bills
– You can keep your boiler safe
– Your boiler will stay under the manufacturer warranty

– Unusual whistling, banging, or tapping noises.
– Higher than average gas usage indicates the boiler is not performing efficiently.
– The pilot light or flames are orange/yellow in colour, which should normally be blue.
– It will show a high system water pressure instead of continuing at a steady pressure

Boiler installations vary. It depends on the work that needs to be done. If you have a combi boiler and we are installing a new combi boiler in the same place, this will take approx 4-6 hours.

If you are converting from a system boiler to a combi boile, this will take approx 2 days.

If you would like your boiler relocating to a different part of your home, you need to add another 1/2-1 Day onto the work to install the boiler

This depends on the type and the make of boiler in which you need. Our expert boiler installation engineers will make an assesment of your home and lifestyle and suggest the right type of boiler for you. you will then have a choice of brands of boiler to choose to suit your budget