Summer boiler bundle

New boiler
installation

Get a fixed online quote for a new boiler today with £200 off + a FREE tado° X smart thermostat worth £195*

  • £200 off all new boiler installs
  • FREE tado on Vaillant & Glowworm*
  • Next day installations

We've got a new boiler for
every budget

Expert installers of the biggest boiler brands

Vaillant Alpha Glowworm Viessmann Ideal Worcester

Get a new boiler in
the blink-of-an-eye.

It’s not what we do, it’s the way that we do it.

You answer icon

You answer

Some nice and simple questions, like the type of boiler that you have, and some basic details about your home.

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You pick

A new boiler that you love from a range of fixed price options that we've recommended for your home.

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We fit

Your new boiler, flue and everything inbetween will be expertly installed in as little as 24 hours.

Trust us, you can trust us.

Which Trusted Trader

Which? Trusted Traders
for 3 years running

2023 • 2024 • 2025
Trustpilot 5 Star

10,000+ 5-star
customer reviews

Trustpilot
Uswitch Partner

Partners of Uswitch &
Moneysupermarket

Since 2022

Replacement boilers,
redefined.

All-inclusive boiler installations

+New boiler +Installation +Controls1 +Pipework +Flush
+Flue +Filter +Recycling +Aftercare
Which Trusted Trader

We've been Which? Trusted boiler installers for 3 years running.

2023 • 2024 • 2025

Get a new boiler with up-to 4 years

0% APR

Next day boiler installations

If ordered before 3pm

🕑

Expert, local installers

We fit new boilers in every corner of the UK.

Fit boilers? Fit for us.

Which? Trusted installations

Which? approved installers Fixed online prices Next day installs

We're giving
warmth to the
nation

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We have 14,470 reviews on ★ Trustpilot
Read reviews

"The engineers were lovely men. They explained everything. Did a really good job. Cleaned up after themselves and left house..."

- Mrs Glenys Lowry

"Very quick installation, good price"

- Catherine

"Engineer arrived on time, neat work and cleaned up after installation"

- MR SARWAN SINGH KALIRAI

Get a boiler replacement
in 3 simple steps

...and join 50,000+ happy customers

Answer some simple
questions

To give you an accurate, fixed online quote for your new boiler,
we'll need to know some basic info about your home and it's
current boiler/heating system.

Answer the questions

Pick a boiler that suits your budget

We'll match you to a range of fixed price boiler installation packages. Pick the one you like, and the one that fits your wallet.

Low-rate and 0% APR boiler finance is available.

Get your new boiler installed, next day

Thanks to our 500+ strong network of expert installers, we're able to fit new boilers in most parts of the UK, next day (if you book before 3pm).

Get your quote online

Get a your boiler quote, online

Instant quotes
Finance available
Next day installs
Get a quote →

Shop new boilers

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Worcester Bosch Boiler

Worcester Bosch Boilers

The UK's most well-known boiler brand
  • Huge 10 year parts and labour guarantees
  • Awarded 'Which? Best Buy' status for 13 years running
  • Packed with cutting edge, energy saving technology
Learn more about Worcester Bosch Boilers See Worcester Bosch Boilers prices →
💡 New boiler installation prices vary depending on install type, and complexity of job. For an instant price, click the button above.
Viessmann Boiler

Viessmann Boilers

Ruthless reliability from the German giants
  • 10 year parts and labour warranty protection
  • Wide range of combi, regular and system boilers
  • Incredible performance and efficiency
Learn more about Viessmann Boilers See Viessmann Boilers prices →
💡 New boiler installation prices vary depending on install type, and complexity of job. For an instant price, click the button above.
Vaillant Boiler

Vaillant Boilers

The UK's most well-known boiler brand
  • Huge 10 year parts and labour guarantees
  • Awarded 'Which? Best Buy' status for 13 years running
  • Packed with cutting edge, energy saving technology
Learn more about Vaillant Boilers See Vaillant Boilers prices →
💡 New boiler installation prices vary depending on install type, and complexity of job. For an instant price, click the button above.
Our customers say Excellent
4.8 out of 5 based on 14,485 reviews

New boilers, lower bills

💡

Save up-to £840 per year on your heating bills with a new boiler³

+
Heating Engineer

We work with, train and support 500+ boiler installers, all over the UK.

You're in, safe hands

All new boiler installations are carried out by insured, qualified and highly skilled engineers.

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Heating Engineer

We work with, train and support 500+ boiler installers, all over the UK.

Boiler finance

Pay for your new boiler installation in installments, with up-to 4 years 0% APR and flexible deposits.

Up-front, by card

Pay in-full for your new boiler via your credit or debit card. Secure payments, with no fees.

Shop boiler types

Combi boilers

The most popular type of boiler in the UK

  • An ideal choice for most homes
  • Provide heat and hot water, on demand
  • No need for separate storage tanks or cylinders
  • Efficiency ratings up to 94%
Buy a combi boiler →

Regular boilers

Perfect for busier, family sized homes

  • Deliver lots of consistent hot water
  • Compact, but require a separate hot water cylinder and header tank
  • If the boiler breaks, hot water is available via immersion
Buy a regular boiler →

System boilers

Most common in larger, newer homes

  • Work alongside a pressurised hot water tank
  • Don't require a cold storage tank in the loft (like regular boilers)
  • Typically found in larger, modern homes
Buy a system boiler →

Types of new
boiler installations

From £1,885

Combi swaps

A replacement of an existing combi boiler

  • Straight forward installation process
  • Typically takes one day to complete
  • Single unit, not tampering with external components (tanks etc)
Get an online quote →
From £2,295

System/regular swaps

Replacement of an existing system/regular boiler

  • Straight forward installation
  • Boiler off the wall, new boiler on
  • Reconnects to your existing tanks and components
  • Typically reconnect boiler existing controls
Get an online quote →
From £2,685

Conversions

Replacing existing regular boiler, with a combi

  • More invasive and complex
  • Requires removal of existing tanks and cylinders
  • Re-piping of parts of the home's system
  • Takes 1-2 days to complete installation
Get an online quote →

With our boiler installation, you'll get

New Boiler Gas Safe Installation System Flush Boiler Filter Aftercare

Getting a new boiler
on finance

0% boiler finance

Spread the cost of your new boiler with up-to 4 years interest-free

  • Up-to 4 years 0% APR available on selected boiler replacement packages
  • £0 deposit options available
  • Easy, online quote and application process
0% APR boiler quote →

Low monthly payments

Make your new boiler more affordable, with longer terms at 11.9% APR

  • Spread the cost of your new boiler installation over 3, 5, 7 or 10 years
  • £0 deposit options available
  • Multiple lenders for higher acceptance rates
  • Online application
Pay monthly boiler quote →
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Which? Trusted Traders. The first and only online boiler installation business to become a Which? Trusted Trader.

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All-inclusive aftercare. Each and every new boiler installation gets our exclusive 12 month workmanship warranty.

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Interest-free. We offer up-to 4 years interest free credit on our boiler installations. What's more, there's no minimum deposit too.

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5 star reviews. Across Trustpilot, Google and Reviews.io, we've got over 13,000 5 star reviews with an average rating of 4.9.

New boiler FAQ'S

View all →
Yes, in more ways than one.

First, we're a Which? Trusted Traders which means we have to work to their strict standards and guidelines.

Secondly, we're Gas Safe Registered, and so are all of the installers who fit for us.

We're also fully insured, giving you total peace of mind.
That's not a problem. If for whatever reason you change your mind, or need to cancel your install, you can do so without any fees.

If you have paid any monies via card, we will refund this directly back to your account.
All of our installation partners go through a lengthy and strict Which? Trusted onboarding process. They're fully insured, highly rated and carry a unique set of skills to get your job, done.

You'll receive details about your engineer prior to your install, including photo ID, so you know who to expect.
Our booking calendar is a live system which checks the real-time availability of engineers in your area, so it should be bang-on. On the rare occasion that the date has been double booked, or there's an error, we'll be in touch to arrange an alternative or discuss your options.
Generally, no. If your boiler is in a typical home with two floors, scaffolding won't be needed. If your flue is located above a conservatory or in a particularly high section of your roof, it'd be best if we check first. You can submit an eSurvey and upload some images for us to run through before you book.
We install a whole range of new boilers, from leading UK brands.

Our most popular being Worcester Bosch boilers, which come fully installed with up-to 10 year guarantee protection. Prices start from £2,195 (for a combi boiler installation).

Vaillant closely follows, with boilers like the ecoTEC Plus being our most popular premium offering.
It depends on the type of boiler installation which you're getting.

On a new combi boiler installation, as standard, you'll get the boiler, all required flue accessories, a system flush, new Boiler Plus compliant controls, a magnetic boiler filter and any extras, such as a gas pipe upgrades and/or condensate pipe upgrades.

On a new regular/system boiler installation, as above, you'll get the boiler, flue accessories, flush, a magnetic boiler filter, gas and condense upgrades and we'll reconnect to your existing boiler controls and cylinder.

We also offer upgrades, such as smart thermostats to remotely control your new boiler, improved flushing options and more.
Simply put, after your new boiler has been installed, you don't need to do anything.

Our team will register your new boiler's warranty directly with the manufacturer and we'll also register it with Gas Safe so they're aware of the new appliance. The only thing you'll need to do is get your new boiler serviced annually (this is important to keep it running well, but, most importantly, to maintain it's warranty)
On average installing a new boiler takes between 1 to 2 days to complete. If you are having your old boiler replaced in the same location and with the same type of boiler the process will be quicker (likely one day) compared to installing a different type of boiler in a new location.

So, to summarise:

Straight forward boiler replacement: Takes 1 day

A boiler replacement, including a relocation: Takes 1-2 days

A conversion from a regular to a combi: Takes 1-2 days

Learn more.
Yes, we can certainly try to.

For our new boiler installations, Heatable works with a panel of lenders when offering boiler finance, so, if for whatever reason you didn't pass with our primary lender, we will pass it over to a secondary who will be able to assist.

Failing that, we have a range of other payment options available such as payment via credit card, Klarna, and more.
First, you'll go through some online questions to ascertain what type of boiler installation you require, and match you to suitable products.

Next, you'll choose a new boiler which suits your budget (prices start from £1,795).

Then, you'll choose whether to spread the cost of your new boiler with finance or pay using your card.

Once you've booked, you'll upload some images of your existing setup to make sure we order the correct materials, and to avoid delays on the day of your installation.

Once installed, we'll register your new boiler's warranty and sort all of the paperwork.
Yes, you can. All of our installations have finance options available.

You can spread the cost over 3, 5, or 10 years at a rate of 9.9% APR. Or, you can spread the cost with 0% APR up-to 4 years on certain packages.

Buy Now Pay Later boiler finance is also available.
The cost of a new boiler depends on a variety of factors, including the type of boiler you select, your location and the complexity of your installation. But, the typical costs for installing a boiler are:

Combi boiler replacement: £1,800 - £2,800

Regular boiler replacement: £2,000 - £2,800

System boiler replacement: £2,000 - £2,800

Conversion (regular to combi): £2,600 - £3,500
This largely depends on the efficiency of your current boiler and how much energy you use. For example, you could save as much as £840 per year if you are upgrading from an old G-rated boiler to a modern A-rated boiler (along with a programmer, room thermostat and thermostatic radiator controls (TRV's)).

For more details, check the Energy Savings Trust website.

Get a new boiler for
your home, with ease