New Boiler Installation

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Live in London or Kent? GET A Free boiler QUOTE!

Answer the questions below to get your free boiler quote & free expert advice on the best boiler for you (no salesmen will call, just a gas engineer)

3 Reasons To Choose Thames Boilers

Price Promise

Got a written boiler quote from British Gas or Eon? Just show it to us and we'll beat it. We'll also have an almighty good go at beating quotes from any other VAT registered company.

Up To 12 Year Guarantee

If you choose a Viessmann boiler, you can get a parts and labour guarantee of up to 12 years. So if anything goes wrong with your boiler in the first 12 years, it will be fixed for free. The only catch is you need to have your boiler serviced once a year.

Kent Trading Standards Checked

We're proud members of the Kent Trading Standards Checked scheme. As members we're vetted once a year and adhere to their strict code of practice. Learn more here.

Answers to our customers' most common questions

How much will my new gas boiler cost me?

It really depends on you, your property, and what you need. However, most boiler installations are between £2000 and £4500.

If you would like an exact price, and free expert advice, you should book a free home survey here.

How quickly can I have my new boiler installed?

Most of the time, within a week or two of you accepting your quote. 

What guarantees do your boilers come with?

Our Vaillant and Viessmann boilers come with a manufacturer's backed 10 year parts and labour guarantee. This means if anything goes wrong with your boiler in the first 10 years, the manufacturers will come out and fix it for free - including all parts and labour. With some Viessmann boilers, you can extend this guarantee to 12 years. 

The only "catch" is that you need to make sure your boiler is serviced every year by a Gas Safe Registered engineer. 

How can I pay for my new boiler?

There are lots of ways you can pay for your new boiler. You can pay by:

  • Credit or debit card
  • Bank transfer
  • Cash

We don't currently offer finance. 

What qualifications do your engineers have?

All our boiler installation engineers, at a minimum:

  • Are Gas Safe Registered
  • ACS qualified
  • Hold public liability insurance

Award Winning Boiler Brands

Choose from these top boiler brands

Viessmann Boilers

Viessmann Boiler

Viessmann are the best boiler manufacturer you've never heard of. But don't let that put you off. They're huge in Europe and, like Vaillant, they're German and have been around for over 100 years. We love Viessmann at Thames Boilers because their build quality is as good as (if not better) than Vaillant and Worcester Bosch, but their prices are a little lower. This makes them great value - and Which? agree, giving Viessmann several Best Buy awards in recent years.

Vaillant Boilers

Vaillant Boiler

Vaillant are one of the best know boiler brands in the UK. They're a German company, based in Remscheid since 1874. They were arguably the first company to make a "combi" boiler back in the early 1960's. So they're very well established. Today, they're still considered one of the best boiler manufacturer's around, winning Which? Best Buy awards on a regular basis.

Worcester Bosch Boilers

Worcester Bosch Boiler

Worcester Bosch are probably the best known boiler brand in the UK. Although now owned by the German giant, Bosch, Worcester is still very much a British company. Its boilers are still made in Warndon in Worcester. Like Vaillant and Viessmann, Worcester boilers have won several Which? Best Buy awards. If you want a high quality boiler, but still want to "buy British", then Worcester Bosch is an excellent choice. Although they are among the most expensive boilers we install.

Baxi / Main Boilers

Baxi Boiler

Baxi is another great British boiler brand, who can trace their roots back to Richard Baxendale, an iron founder, who began the Baxendale Company in 1866, based in Preston in Lancashire. Today, Baxi also makes boilers under the Main and Potterton brands. We recommend Baxi boilers as the least disruptive replacement to some heat-only boilers - and their Main brand for people who want to keep costs down.

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