A and C
A and C
Our boiler stopped working. We contacted Avenue Heating and within minutes on the phone Winston had our boiler working again. We were very impressed with the service and would definitely use Winston in the future.
Thomas Vosper
Thomas Vosper
Called around a few local options only to be abruptly told “no thanks, too busy”. These guys were polite, set clear expectations on availability and turned up on time. Job was completed quickly and at a reasonable cost.
Joanne King
Joanne King
So impressed with the service and how quick he was able to come round and fix our issue with the boiler especially in this cold weather… like a guardian angel at short notice. Winston is a lovely guy who was so professional and efficient and managed to fix the problem we had and gave us great advice! Definitely highly recommended.
Jake Christie
Jake Christie
was a very friendly service and sorted my problem out within 24 hours. Was really helpful and great pricing compared to most companies. Would highly recommend to use Avenue heating. Jake
Simon Jenkins
Simon Jenkins
I cannot recommend Winston and the team at Avenue Heating enough. They’ve just completed an extensive upgrade to our hot water and heating system; they provided an absolutely first class service at a very competitive price (they were the cheapest of 3 quotes and came in under budget). They’re also incredibly professional, honest, easy to deal with and great with communication. We’re absolutely delighted with the end result and I have subsequently used Winston to manage an electrical re-wire which was competed professionally and to the usual high standard. I would absolutely no hesitation in recommending Avenue Heating
Alistiar Elder
Alistiar Elder
I had Avenue Heating out today for a straight forward boiler check up. They have take great lengths to ensure they are Covid secure, Full PPE was used, which I am sure will give comfort to those with Covid concerns. The technician was friendly and was happy to engage in conversation throughout. The boiler area was left tidy and the work was completed quickly. Professional service, definitely would recommend.
Laura Green
Laura Green
We have had a new boiler, then given very professional advice on what we need to improve our heating system in an old house. Have cleaned the system and removed the gunge. Helped us out at short notice with repiping work when our kitchen was being redone. Winston and Ben are great. Thank you for assisting us in our hour of need.
Aidan McLeod
Aidan McLeod
Ben and Naz came on time, were clean and polite, very helpful and explained the work they did to our boiler. There was no sucking of air through teeth or ‘this is going to cost’, just an honest review and maintenance of our system. Such a pleasure to do business.


When you are ready to have to start thinking about needing a new boiler installation as your boiler repairs have failed. Whether it be due to an emergency break-down and you need a replacement boilerin a hurry, or whether you want to plan a possible future need for a boiler replacement so that you can be sure your heating will be working well during the cooler seasons.

Our heating engineers are here to help guide you into choosing the best new boiler installations for your home.

There are many different factors that you need to take into account when selecting the right boiler for your home, these include:


We install all of the top brand boiler manufacturers that are installed in UK.  As well as being accredited Vaillant and Viessman installers, our heating engineers also install WorcesterIdeal, Viessmann and Main boilers.

Avenue Heating Underfloor heating installation
Avenue Heating Boiler Installation


You and your home can both benefit from having your boiler replaced and a new boiler installation. Whether your boiler is beyond repair or if you simply need an upgrade, Our heating engineers can help you with a brand new boiler installation.

Our team has come up with what we believe are a few of the main benefits of replacing your boiler, such as:


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

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

Avenue Heating Boiler Installation & Boiler Replacement



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

Combi boilers are fantastic for smaller properties, such as flats or small houseshomes, where space is at a premium. A combination boiler is extremely energy efficient and cost-effective as water is only heated when you needit and not heated and stored.

The downside to combination boilers is that when there are two or more taps being used simulaniously, there is a noticeable difference in the flow rate of the hot water as the water comes directly from the mains water supply. 


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

They are similar to conventional boilers, with the difference being 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.


A Conventional boiler installation also acts only as a heat source,as with system boilers, although, they have no additional components in them.

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.

These types of boilers are best for older heating systems, where increased pressures used in a ‘sealed’ system may cause issues 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 experienced heating engineers will visit your home to carry out a full survey at a time that is best for you


When we are assured that the proposed boiler is suitable for you and your house, we will send you a free, no-obligation quotation.


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

We will usually 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 ob.

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 interesting discoveries such as birds and wasps nests! But you can be rest assured, no matter what we find, our gas safe registered engineers have the skill and experience to find a suitable solution to the issue!


Once the job is complete, 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 be aware of with your new boiler. 

If the above sounds like the kind 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 requirements!

Avenue Heating are able to assist you with all of your homes plumbing and heating requirements.
Don't take out word for it, take 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


St Albans is a cathedral city in Hertfordshire, England located at the east of Hemel Hempstead and west of Hatfield, 20 miles (32 km) north-west of London. St. Albans, which later became the Roman city of Verulamium, was the first significant settlement for travelers traveling north on the ancient Roman Watling Street. It is located in the Greater London Built-up Area and the commuter belt of London.

St Albans‘ numerous historic inns can be attributed to its past as a small rural market town, a Christian pilgrimage place, and the first coaching stop on the route to and from London. Small and lacking in industry, St. Albans was in the Victorian era.

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