In partnership with Avenue Property Services Group LTD

New Boiler Installation across Hertfordshire & North London

keeping WATFORD, HERTFORDSHIRE warm & cosy since 2017
Avenue Heating

Warming homes in Watford and Herts since 2017

HERTFORDSHIRE'S MOST REVIEWED BOILER Installation COMPANY​

Choosing a new boiler

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:

Size of your house
How many people live in your home
How much water you use
Any future plans for your home

Avenue Heating working with the UK's most trusted boiler brands

Hertfordshire & North London Boiler Packages

A boiler range for every Watford and Hertfordshire home & family budget!
WB 4000

Worcester 4000

Up to 10 year guarantee. Available in sizes ranging from 25kW – 30kW

£2000+

*Subject to supply chain fluctuations

Vaillant pro

Vaillant EcoTec Pro

Up to 10 year guarantee. Available in sizes ranging from 22kW – 35kW

£2370+

*Subject to supply chain fluctuations

WB 8000

Worcester 8000

Up to 12 year guarantee. Available in sizes ranging from 30kW – 50kW

£2350+

*Subject to supply chain fluctuations

The UK's biggest & most trusted boiler brands

We want to ensure you and your new boiler get along. 
So, all our new boilers include 90 days of homeowner help and support from our friendly staff.
man smiling after he's booked a boiler service

Installation & Heating Maintenance Solutions for the people of Hertfordshire

Average from 358 Happy Customer Reviews (4.89)
4.9/5
Read what other locals say about their AVENUE HEATING journey
Avenue Heating

Warming homes in Watford and Herts since 2017

HERTFORDSHIRE'S MOST REVIEWED BOILER Installation COMPANY​

Yes! We also service & repair boilers across Hertfordshire.

At Avenue Heating, we don’t just install boilers, we service and repair them too. We’re your local experts for Vaillant and Worcester Bosch boilers, as well as all other major boiler brands.

Whether you own a high-performance Vaillant ecoTEC, a trusted Worcester Bosch Greenstar, or a different make altogether, our gas engineers know how to keep your heating system running safely and efficiently.

Why an Annual Service Matters? If your boiler is still under its manufacturer’s guarantee, it needs to be serviced annually by a qualified engineer to keep that cover valid. Our team is fully trained to carry out thorough safety and performance checks, helping to prevent breakdowns and extend the life of your boiler.

Fast, Reliable Repairs, if something does go wrong, we’re here to help. From minor faults to urgent breakdowns, our engineers have the experience and know-how to get your heating and hot water back up and running quickly.

We’re based in Watford and proudly serve homes in Radlett, St Albans, and throughout Hertfordshire. With Avenue Heating, you can rely on professional, friendly service and honest advice every time.

 

Different Boiler Types

Avenue's
Combi Boilers

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. 

Avenue's
Regular Boilers

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.

Avenue's
System Boilers

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. 

 

A boiler range for every Watford and Hertfordshire home & family budget!

Worcester Boilers WAI

Our Worcester Bosch boiler range includes the Greenstar 2000, 4000 and 8000 combi boilers. The 8000 Life & Style models can warm the largest Hertfordshire home, while the 2000 & 4000 options are for smaller properties with no more than one bath/ shower.
 
Avenue Heating have been proud WAI ( Worcester Accredited Installers ) since 2015. Learn more about Worcester Bosch boilers and our WB options here.
wb 2000

Greenstar 2000

Supplied and fully installed combi boiler inc flue, control, cleansing & protection. 

£2350

*Subject to supply chain fluctuations

WB 4000

Greenstar 4000

Supplied and fully installed combi boiler inc flue, control, cleansing & protection. 

£2550

*Subject to supply chain fluctuations

WB 8000

Worcester 8000

Supplied and fully installed combi boiler inc flue, control, cleansing & protection. 

£3050

*Subject to supply chain fluctuations

We want to ensure you and your new Worcester boiler get along. 
So, all our Worcester boiler installations include 90 days of homeowner help and support from our friendly staff.
Worcester Bosch 2000

Worcester Bosch 2000 Combi Boiler

The Worcester Bosch Greenstar 2000 is the brand’s most price-competitive combi boiler. It’s available in outputs of 25 and 30kW, and for those on a tighter budget but who want the assurance of quality that a Worcester Bosch boiler brings, this will be a good option for you!

Property Type

The Worcester Bosch Greenstar 2000 might be a good fit for your apartment or smaller home if you only need hot water for one bathroom. This boiler is popular with first-time homeowners, landlords and buy-to-let property owners. What makes the Worcester Bosch 2000 unique is that it can also be fitted for use with LPG, which would make it a brilliant option for mobile homes or even caravans in holiday parks!

*Supplied and fully installed Combi boiler inc Flue, Honeywell Control, System Cleansing and protection.
List prices are for illustrative purposes only. Fixed-priced quotations will be supplied following a boiler survey. The final quotation may be subject to your unique situation & supply chain fluctuations.

Worcester Bosch 4000

Worcester Bosch 4000 Combi Boiler

The Worcester Bosch Greenstar 4000 is a super boiler, typically in terms of build and quality that you’d expect from the Worcester Bosch family. It features a modern new design, with an easy to use full-colour text display. Oh, it’s quiet too!

Property Type

The Worcester Bosch Greenstar 4000 is perfect for small to medium-sized homes with one bathroom. The Worcester 4000 has a wide modulation range to meet all of your heating and hot water needs whilst doing so efficiently for the best use of energy.

*Supplied and fully installed Combi boiler inc Flue, Honeywell Control, System Cleansing and protection.
List prices are for illustrative purposes only. Fixed-priced quotations will be supplied following a boiler survey. The final quotation may be subject to your unique situation & supply chain fluctuations.

Worcester Bosch 8000

Worcester Bosch 8000 Combi Boiler

The Worcester Bosch Greenstar 8000 is a stunning, design-led boiler. Whilst it is designed for those with a keen eye on how the boiler will look in the home, you can be confident that this has been achieved without any compromise on quality or performance.

Property Type

The Worcester Bosch Greenstar 8000 is available from 30kw up to 50kw, making it a very versatile unit. For a better consideration of this boiler, the 40kw output means this boiler is good for homes of most sizes, especially for those with two bathrooms where plenty of hot water is required simultaneously.

*Supplied and fully installed Combi boiler inc Flue, Honeywell Control, System Cleansing and protection.
List prices are for illustrative purposes only. Fixed-priced quotations will be supplied following a boiler survey. The final quotation may be subject to your unique situation & supply chain fluctuations.

A boiler range for every Watford & Hertfordshire home & family budget!

Vaillant Advanced Boiler Installers

Now for the good folk of Hertfordshire, we only install the best Boiler brands. If you think the Germans make good cars, well, they make better boilers! Vaillant is Europe’s largest heating manufacturer, winning countless awards over the decades. Although designed in Germany, the Vaillant UK head office and factory are in Derbyshire.
 
Our Vaillant boiler range includes the remastered Ecotec Plus for larger properties needing higher hot water flow rates. The little brother to the Ecotec Plus is the Pro model. Until recently, it is one of the most common combi boilers in the UK. For those with less space, head to the little cupboard fitting Ecofit Pure and rear flue.
Vaillant pure

Vaillant EcoFIT

25 / 30 / 35kW

Supplied and fully installed combi boiler inc flue, control, cleansing & protection. 

£2450

*Subject to supply chain fluctuations

Vaillant pro

Vaillant EcoTEC Pro

24 / 28 / 30kW

Supplied and fully installed combi boiler inc flue, control, cleansing & protection. 

£2570

*Subject to supply chain fluctuations

Vaillant Plus

Vaillant EcoTEC Plus 2

26 / 32 / 36 / 40kW

Supplied and fully installed combi boiler inc flue, control, cleansing & protection. 

£2710

*Subject to supply chain fluctuations

We want to ensure you and your new Vaillant boiler get along. 
So, all our Vaillant boiler installations include 90 days of homeowner help and support from our friendly staff.
Vaillant EcoTec Plus 2

Vaillant EcoTec Plus 2 
Combi Boiler

The Vaillant ecoTEC plus is a fantastic choice for homeowners looking for high performance and energy efficiency. Designed for a wide range of property sizes, it’s perfect for medium to larger homes with more demanding heating and hot water needs. With a sleek, modern design and whisper-quiet operation, it fits seamlessly into most homes whether you’re upgrading your existing system or fitting out a new property.

It’s a popular pick for families, professionals, and anyone wanting trusted performance backed by advanced German engineering and up to a 10-year warranty when installed by a Vaillant-accredited engineer.

Property Type

 The Vaillant ecoTEC plus is ideal for medium to large-sized homes with one-two bathroom. With its wide modulation range, it adjusts effortlessly to your home’s heating and hot water demands delivering warmth efficiently while helping you make the most of your energy use.

Whether you’re replacing an older system or planning ahead, the ecoTEC plus offers reliable performance, quiet operation, and long-term peace of mind especially when fitted by a Vaillant-accredited installer.

*Supplied and fully installed Combi boiler inc Flue, Honeywell Control, System Cleansing and protection.
List prices are for illustrative purposes only. Fixed-priced quotations will be supplied following a boiler survey. The final quotation may be subject to your unique situation & supply chain fluctuations.

Vaillant EcoTec Pro

Vaillant EcoTec Pro 
Combi Boiler

The Vaillant ecoTEC pro is built for reliable, energy-efficient heating without any fuss. Designed with smaller to medium-sized homes in mind, it’s a fantastic choice if you want all the quality and performance of Vaillant engineering in a straightforward, cost-effective package.

Its compact design means it won’t dominate your space, and it’s quiet enough to fit comfortably in busy areas of your home. The ecoTEC pro combines efficient heating and hot water delivery with easy-to-use controls and smart energy use, helping keep your home warm and your energy bills under control.

With trusted Vaillant build quality inside, the ecoTEC pro delivers reliable performance day after day, the perfect solution if you want dependable heating at an affordable price.

Property Type

The Vaillant ecoTEC pro is ideal for small to medium-sized homes, such as flats or houses with one bathroom and modest hot water needs. Its compact design means it fits neatly into kitchens, cupboards, or utility rooms, making it perfect where space is limited – all without compromising on reliability or performance.

*Supplied and fully installed Combi boiler inc Flue, Honeywell Control, System Cleansing and protection.
List prices are for illustrative purposes only. Fixed-priced quotations will be supplied following a boiler survey. The final quotation may be subject to your unique situation & supply chain fluctuations.

Vaillant EcoFit Pure

Vaillant EcoFit Pure 
Combi Boiler

The Vaillant ecoFIT pure is a sleek, compact boiler that proves you don’t have to compromise on performance to get a clean, modern look. Designed to fit in tight spaces like kitchen cupboards, it’s perfect for homes where space matters without sacrificing efficiency or reliability.

With trusted Vaillant engineering inside, the ecoFIT pure offers great performance, smart energy use, and quiet operation, all wrapped up in a minimalist design that blends effortlessly into your home.

Property Type

The Vaillant ecoFIT pure is perfect for homes where space is at a premium but performance still matters. Compact enough to fit inside a kitchen cupboard, it’s ideal for smaller properties or flats that need reliable heating and hot water without losing precious space. Despite its size, it delivers efficient, quiet operation and the trusted reliability you’d expect from Vaillant.

*Supplied and fully installed Combi boiler inc Flue, Honeywell Control, System Cleansing and protection.
List prices are for illustrative purposes only. Fixed-priced quotations will be supplied following a boiler survey. The final quotation may be subject to your unique situation & supply chain fluctuations.

Boiler MOT
HERTFORDSHIRE'S MOST REVIEWED BOILER Installation COMPANY​

Yes we also offer Boiler Servicing & Service plans

To maintain your boiler’s warranty or guarantee, it’s important that you keep up with your boiler servicing! Just like the car at your home, an annual service will help keep the engine of your home running smoothly and efficiently to help with the running costs and energy use. 

Of course, there is a cost to a boiler service. For some, a pay monthly option’s convenience helps with budgeting. This is why you can pay monthly for your boiler service on our innovative service plan. 

See more about our boiler service and service plans on our servicing page!

Avenue's case studies

Our Recent Boiler Projects

Boiler Installation
Radlett
Boiler Installation
Boiler Installation Case Study
More Boiler Installations - Coming soon!
Boiler Service
Watford
Boiler Service
Case Study about boiler service
Boiler Service - Coming soon!
Coming Soon
New project coming soon!
Case Studies
Hertfordshire's most reviewed boiler installation company

Understanding Boiler Plus

Changes within building regulations that affect the heating industry are usually intended to improve energy efficiency within our properties. Changes to Building regs Part L in 2018 introduced the “Boiler Plus” requirement that every new Boiler installation must have one of the following four “plus” technologies installed with the new boiler.

Understanding boiler plus
Load compensation

The lowest priced option and also most common is a boiler plus level programmable thermostat with load compensation. Load compensation allows the boiler to modulate the flow temperature from the boiler based on the actual room temperature. We usually recommend Honeywell T3R & T6R programable thermostats.

Smart control

Normally in the form of a programable thermostat that is connected to the internet and provides automation and optimisation of the heating demand. The most common device in this catorgary is the Google Nest Learning thermostat.

Weather compensation

An outdoor thermostat that modulates the heating flow temperature based on the outdoor temperature. I.e. helping the boiler run slightly cooler when the weather outside is milder.

PFGHRD (Passive Flue Gas Heat Recovery Device)

There are not many of these systems in use.

Magnetic filters
Hertfordshire's most reviewed boiler company

Boiler Protection & 
Understanding Part L

Protecting boilers with magnetic filters has been the best practice since the beginning of the 2000s. However, until now, boiler protection has only been advisable. The more prominent boiler manufacturer’s started extending warranties to boilers if installed with their magnetic filters a few years ago. However, the homeowner could still decline to have the filter protection installed.
 
However, things move on eventually. The main change to boiler installation practices in 2022’s update to Part L is the mandatory use of magnetic filters to protect heating systems and save fuel. Lowering carbon emissions and saving the world is everyone’s responsibility. But knowing that this simple technology will prolong the boiler’s life and reduce fuel bills is a win-win situation.

If you would like to arrange your free boiler survey please fill in this short form and one of the team will be in-touch!

Please note the quickest and best way to contact Avenue Heating is via this form.

Get in touch

Avenue Heating

Let's Talk

Phone : 020 3137 3333

Head Office

Avenue Heating Suite Unit 107 186 St Albans Rd Watford WD24 4AS

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VAILLANT-BROCHURE.png
Download manufacturer literature

For more information follow the link below to download their Vaillant boiler manufacturer brochures

FAQ

Your most Frequently asked boiler questions

Don’t see your question below? Get in touch using the form below, we’d love to answer any questions you have.

- 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

- 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

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

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

What happens when you contact Avenue Heating

Combination Boilers

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. 

Collect Information

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

Quote

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

Installation

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.

Problems

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!

Handover

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. 

System Boilers

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.

Conventional Boilers

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. 

 
Hertfordshire's most reviewed boiler company

Understanding Boiler Installations

Now that is a big subject! Thankfully, having installed well over a thousand boilers in the Hertfordshire area, our team is pretty good at explaining boiler installation best practices to the local community. Over the coming months, we will be re-writing our Homeowner’s Guide to Boiler Installation. We originally wrote this guide in 2016, but as with everything, the heating industry has moved on since then. Whilst our marketing team put this together, we want to share the two most significant changes to building regulations in recent years. Those are 2018’s Boiler Plus and 2022’s Part L for energy efficiency.

Choosing a new boiler

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:

Brands of boilers

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.

Looking to have a new boiler installed?

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:

Why you may need a new boiler

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: