Need a new gas or oil boiler? 0% Finance Available No Deposit Required

We will provide full installation of your new A- rated Gas or Oil boiler and up to 10 year guarantee for total peace of mind.

Get a quick quote Request a callback
The Boiler Installation Specialists | Boiler Replacement Hertfordshire, London, Essex.

Get your free instant quote today

Request a callback Get a quote


How We Work Stage 1

Step 1

Speak to one of our technical advisors today and choose your boiler package & a suitable finance plan or simply pay in full. We are qualified to install both oil and gas fired boilers in your home.

How We Work Stage 2

Step 2

Once you are happy with your choice of package simply agree quote and installation date.

How We Work Stage 3

Step 3

Our in-house installation experts will deliver and install your new oil or gas fired boiler and all relevant certficates will be issued.

Worcester Bosch boiler with installation

From* £1800 inc VAT

To get a more accurate quote, why not fill out our easy-to-use web form, and we will get back to you

Get a quote

Photo of Worcester Bosch boiler

What we do

With over 30 years of expertise in the industry, we are proud to say we are one of the leading boiler installation companies in South East of England.

Proudly endorsed & recognised by Trading Standards, Which? Trusted Trader, Checkatrade and leading boiler manufacturers, you as our customer are in safe hands. Click here you can read some of our customer terstimonials.

We are a prestige central heating installation firm where only the highest of quality matters. We are able to cater all needs from customers from small studio apartments to stately homes - whatever your needs are we can meet them installing a single boiler or a fully bespoke system with linked boilers.

We install both oil and gas fired boilers and central heating systems. We are proud members of both Gas Safe and Oftec register. OFTEC ensures the quality of oil-fired equipment, assesses and regulates training provided to oil engineers, and maintains standards among oil technicians. Gas Safe Register replaced the CORGI registration in 2009. It is the official list of gas engineers who are qualified to work legally on gas appliances.


WhichWorcester BoschVaillantGasSafeHertfordshireCheck A TradeOftec
  • Spread the cost of your boiler

    Great oil & gas boiler finance packages available to suit every budget with our 0% APR options, Buy Now Pay Later or our bank buster option.

  • Worcester Bosch Diamond Partners

    We are one of just 3% of gas installers who have been Diamond accredited by leading boiler manufacturer Worcester Bosch. We supply and fit both Worcester Bosch oil and gas fired boilers.

  • Prestige Homes

    We are experts at designing systems and installs for large homes who require bespoke set up and solutions.

  • Our in-house installation experts

    Every one of our Installation is carried out by our own highly trained installation experts to top standards.



Worcester Bosch Diamond Accredited Partners

The Boiler Installation Specialists Ltd and its owners were invited to join the Worcester Accredited Installer scheme, and remain a valued member of the scheme today, during this time the team at The Boiler Installation Specialists Ltd have completed and maintained accreditations for Gas Boilers. 

The Worcester Bosch Group aim to work with a very select group of independent heating companies. These companies have demonstrated a commitment to great customer service and quality workmanship over a sustained period of time. As part of the selection process, The Boiler Installation Specialists Ltd engineers completed Worcester Bosch product specific training courses to demonstrate competence on Worcester Bosch gas boilers. 

Oliver Reynolds
Sales GB Worcester Business Development (TT/SGB-WBD)

Best Buy  - Which - Gas Boilers September 2016 Guarantee 10 Year Guarantee by Worcester Worcester Bosch Group - Accredited Installe
Photo of Oliver Reynolds, Sales GB Worcester Business Development
Pay Monthly For Your New Boiler

Pay Monthly For Your New Boiler

Get your new oil or gas boiler on finance today. Great boiler finance packages available to suit every budget with our 0% APR option, Buy Now Pay Later or our bank buster package - with or without a deposit you can now get your new boiler with a payment plan that suits your budget & lifestyle.

Find out more

Choosing a new boiler for your home and lifestyle

Choosing a new boiler for your home and lifestyle

  • A combi boiler is a simple unit delivers both hot water and heating - making them great for small to medium-sized homes. They heat water directly from the mains whenever you turn your hot tap. Combi boilers don't need a hot water cylinder or storage tank in the loft so you save a lot of space too!

  • System boilers need a cylinder for storing hot water however they don't take any space in your loft with this boiler type some of the main heating and hot water components such as the pump are built into the boiler itself so it is quick and easy to install. System boilers are ideal for homes with 2 or more bathrooms as they can allow you to have multiple showers running at the same time.

  • Regular or traditional boiler need both a hot water cylinder and tanks in the roof. These boilers are also perfect for homes where a lot of hot water is used at the same time. They are particularly suited to low water pressure areas and for installation on to systems which have a lot of old radiators.

Check a Trade - Trusted Partner
9.94 /10 Reliability and Time Keeping
9.93 /10 Tidiness
9.97 /10 Courtesy
9.96 /10 Workmanship

* Scores based on 314 reviews. We have been a member of CheckaTrade since April 2015.

9.95 /10 Average Score
(Based on 314 reviews)

Congratulations to The Boiler Installation Specialists Ltd on reaching over 200 customer reviews. They have been providing a truly quality service to all of their customers. They have not had a single complaint and virtually all of their reviews have been 10/10. A tremendous effort!

Kevin Byrne, Founder and CEO of CheckaTrade.com
Photo of the CEO

What our customers say

The service is friendly and the results are always of the highest quality.

This is the best company I have ever dealt with.

Madelaine Taylor Posted November 2017

Work was completed promptly and the team were great. They kept me informed and a full handover and explanation of the boiler was explained. Team were friendly and the work was done both professionally and extremely tidy.

Mark Collier Posted November 2017

From the initial contact with Nina to the completed work, we cannot praise The Boiler Installation Specialists enough for the work they done in our home in Bishops Stortford. Excellent customer service and workmanship. We are so pleased with the finished product. 

Sheila Marks Posted November 2017

If you are looking for a high quality company, I highly recommend this one.

They are the very best in the field, no compromise.

Testimonial by Mr & Mrs Smith
Mr & Mrs Smith Posted November 2017