New boilers

Save up to £580* per year and increase your home's energy efficiency by installing a new boiler

With energy prices still high, installing a new boiler can help waste less energy so you can save money on your heating.

Get what you need with these reliable boiler brands

Whether you want reliability, affordability or efficiency, you can choose exactly what you need with our wide range of boiler options.

Alpha Heating Innovation logo
Alpha
Glow-worm logo
Glow-worm
Ideal logo
Ideal
Vaillant logo
Vaillant
Viessmann logo
Viessmann
Worcester Bosch Group logo
Worcester

Uswitch only works with trusted suppliers

Find great deals on the purchase and installation of leading boilers from our partners here.

BOXT logo

Warranty

Up to 10 years‡

Warranty

Up to 10 years‡

Installation included

Yes

Installation included

Yes

Finance option

0% APR over 2 years‡

Finance option

0% APR over 2 years‡

13,000 5-star Trustpilot reviews ‡
Next day installation
Fitted boilers from £1,675
£50 off‡for Uswitch customers Google Smart Home Bundles available
BOXT Price promise ‡
British Gas logo

Warranty

5 years

Warranty

5 years

Installation included

Yes

Installation included

Yes

Finance option

0% APR over 3 years***

Finance option

0% APR over 3 years***

Only A-rated boilers
Multiple payment options
£0 deposit options
Up to £350 off**on a new energy-efficient boiler
UK's No. 1 new boiler installer
E.On logo

Warranty

10 years upgrade available††

Warranty

10 years upgrade available††

Installation included

Yes

Installation included

Yes

Finance option

0% APR over 4 years†††

Finance option

0% APR over 4 years†††

Hydrogen blend boilers available
Buy online
3-year service plans available
£100 off†with offer code "USWITCH100"
Flexible finance with new boilers from £1,995
Uswitch exclusive
Heatable logo

Warranty

10 years

Warranty

10 years

Installation included

Yes

Installation included

Yes

Finance option

0% APR over 4 years⁴

Finance option

0% APR over 4 years⁴

Next day installation⁵
Instant quotes
4,900 5-star Trustpilot reviews⁶
Free HIVE Smart Thermostat³with every new boiler installationwith offer code "USWITCH"
Guaranteed fixed online pricing⁷
Uswitch services are provided at no cost to you, but we may receive a commission from the companies we refer you to. Products in this table are ranked alphabetically.

Save up to £580* when upgrading from G to A

It pays to have a more efficient boiler.

  • Waste less energy
  • Save more money
  • Manage your bills more easily

Why does boiler efficiency matter?

A boiler's efficiency relates to the amount of energy it uses when it comes to heating water.

For example, if 95% of the energy used heats the water, this means that 5% is lost, which would represent an energy-efficient boiler. However, a boiler that loses 40% of its energy would not be very energy-efficient.

Considering that you pay for 100% of the energy used regardless of how much is wasted, it's wise to ensure your boiler is as energy-efficient as possible.

What do boiler efficiency ratings mean?

Boilers are either rated according to the ErP or SEDBUK systems.

ErP is the European rating system for boilers, rating their efficiency from A to G. All UK modern gas boilers are legally obligated to be A-rated - i.e. as efficient as it's possible to be.

SEDBUK is basically the same rating system but it adds exact percentage scores to each boiler for extra detail.

Technician installing a boiler

What factors are most important to consider when buying a new boiler?

When buying a new boiler, think about the following:

Boiler type

15% of homes are not connected to the UK's gas network and will need to use an alternative method of heating, such as a wood-burning stove, but the rest of the country will be looking at a gas boiler. There are three main types of gas boiler: combi (best for smaller homes), heat-only (best for homes that use a lot of water in different rooms at the same time) or system (best for bigger homes with poor water pressure).

Boiler size

This is important in terms of the physical size of the boiler and the space it needs to fit into, but also in terms of its power in kW. The general rule of thumb for boilers is that the more heat you need (including to heat water), the higher kW boiler you'll need.

Boiler reliability

While buying a new boiler is expensive, any repairs that need to be carried out on it are also typically expensive, so it's important to try and pick a boiler with solid reliability.

Boiler type

15% of homes are not connected to the UK's gas network and will need to use an alternative method of heating, such as a wood-burning stove, but the rest of the country will be looking at a gas boiler. There are three main types of gas boiler: combi (best for smaller homes), heat-only (best for homes that use a lot of water in different rooms at the same time) or system (best for bigger homes with poor water pressure).

Boiler size

This is important in terms of the physical size of the boiler and the space it needs to fit into, but also in terms of its power in kW. The general rule of thumb for boilers is that the more heat you need (including to heat water), the higher kW boiler you'll need.

Boiler reliability

While buying a new boiler is expensive, any repairs that need to be carried out on it are also typically expensive, so it's important to try and pick a boiler with solid reliability.

* Estimated saving for a gas-heated detached house in England, Scotland and Wales, when replacing an old G-rated gas boiler, programmer and room thermostat with a new A-rated condensing boiler, programmer, room thermostat and thermostatic radiator controls (TRVs). Savings will vary depending on the size and thermal performance of your home. Source: https://energysavingtrust.org.uk/advice/boilers/

BOXT Terms and Conditions

‡ Click to see BOXT Terms and Conditions, Financing information, Warranty information, Trustpilot reviews and the BOXT Price promise.

British Gas Terms and Conditions

** Get £250 off when you buy a new boiler with British Gas.[1] And enjoy an extra £100 discount if you're already a British Gas energy or HomeCare customer.[2]

[1] This offer is available to customers who buy a boiler online or book an appointment for a new boiler quote between 23rd August and 5th September 2022, who choose to have a British Gas installation. This offer is available to homeowners and landlords with a total system output of up to 50kW. Available to 98% of UK mainland households. This offer cannot be used by tenants, British Gas multi–premise landlord customers and cannot be used in conjunction with staff/ex-staff/partner discounts. Terms and Exclusions apply. Offers are subject to change without notice.

[2] £100 additional discount is only available to British Gas energy and British Gas HomeCare 1-4 customers who choose to have a British Gas installation. This offer is available to homeowners and landlords with a total system output of up to 50kW who already have a British Gas energy tariff or HomeCare 1-4 at the property where the boiler would be installed. Available to 98% of UK mainland households. This offer cannot be used by tenants, British Gas multi–premise landlord customers and cannot be used in conjunction with staff/ex-staff/partner discounts. Terms and Exclusions apply. Offers are subject to change without notice.

*** British Gas acts as a credit broker, not the lender and offers products from a panel of lenders. Payment options are subject to change without notice. British Gas is a trading name of British Gas New Heating Limited (No. 06723244), an appointed representative of British Gas Services Limited (No. 03141243) which is authorised and regulated by the Financial Conduct Authority (Financial Services Register No. 490568). Both companies registered in England and Wales. Registered office: Millstream, Maidenhead Road, Windsor, Berkshire SL4 5GD. Availability of credit depends on status and credit checks. Terms and Exclusions apply.

E.ON Terms and Conditions

† £100 off is available when purchasing a new boiler from E.ON Energy Installation Services Limited (company number 09965944) ("E.ON EIS")(“Offer”). To participate in this Offer a customer must purchase a boiler online via our website by visiting https://www.eoninstall.com/boilers/get-a-quote.html?utm_source=uswitch&utm_medium=banner&utm_campaign=4yrs_hamilton (“Online Boiler Purchase”) and using voucher code USWITCH100 OR by booking a free boiler home video assessment with an E.ON EIS Heating Expert by visiting https://www.eoninstall.com/boilers/home-survey/book-date.html?utm_source=uswitch&utm_medium=banner&utm_campaign=4yrs_hamilton (“Home Video Assessment”). Offer valid from 15 August to 30 September 2022 (“Offer Period”). All Home Video Assessments must be booked during the Offer Period and must take place before 11:59pm on 8 October 2022. Home Video Assessments are subject to availability. Offer may be changed or withdrawn by E.ON EIS at any time.

†† The standard guarantee depends on the model purchased, some have 5-year, others 10-year as standard. The maximum we can upgrade models to is 10-year.

†† Only the boiler is covered under this guarantee and it must be maintained in accordance with the manufacturer's user instructions and serviced annually. This service is not included in the price of your boiler.

††† E.ON reserves the right to amend its finance offering at any time and may withdraw at short notice. Please see www.eonenergy.com/boiler-terms-and-conditions for details. E.ON Energy Installation Services Limited is registered in England and Wales under company number 09965944 with its registered office at Westwood Way, Westwood Business Park, Coventry, CV4 8LG. E.ON Energy Installation Services Limited is authorised and regulated by the Financial Conduct Authority in relation to credit broking services under number 750410 on the Financial Services Register. E.ON act as a credit broker not a lender and work exclusively with Creation Consumer Finance Ltd who act as the lender. Credit applicants must be a UK resident aged 18 and over with a maximum age of 85 at the end of the agreement.

Heatable Terms and Conditions

³ Free Hive must be claimed digitally when following and checking out for a new Heatable boiler installation through the URL; “Insert uSwitch AWIN link” and entering the code ‘USWITCH’ at the payment stage during online checkout. Should installation be technically not possible - no refund, replacement or compensation will be supplied. Free HIVE product cannot be supplied unfitted or exchanged for an alternative product or currency. Hive model supplied is the ‘Hive Mini’ version and is subject to availability – nearest equivalent to be substituted if required. Hive offer cannot be used in conjunction with any other offer, discount code or price match. Should two offers be attained by a customer, only the highest value offer will be applied once or the preferred offer of the customer.

0% APR is available on selected boiler packages. Heatable are a credit broker and not a lender – offering lending services through a panel of lenders. Finance terms under Ordering point 6 at https://heatable.co.uk/terms

Next day installations are subject to engineer availability in a customer’s location within the UK and the type of installation being undertaken.

TrustPilot rating accurate as of 24/08/2022. https://uk.trustpilot.com/review/heatable.co.uk

Fixed pricing details: please see point 1 under ordering: https://heatable.co.uk/terms