Which? Trusted Traders
Installed from £1995

Gas Boiler Replacement

We fit new gas boilers nationwide in as little as 24 hours. We're Which? Trusted Traders and offer warranties of up to 12 years on selected boilers from popular brands like Worcester Bosch, Viessmann & Vaillant.

Gas Boiler Replacement
Worcester Bosch Logo

About Boiler Gas Replacement with Heatable

All new boiler quotes with Heatable include a new boiler installation, parts, labour and VAT.

You can pay for your new boiler in monthly instalments and with zero interest (on selected boilers).

A 12-year boiler warranty is available for certain models.

Next-day boiler installation is available (subject to installer availability).

New boiler prices are fixed, so won't change, get your custom boiler quote here.

Top features include

  • Compact, smart design to suit modern homes
  • 5 year out the box guarantee
  • Outstanding support & aftercare

What gas boilers do we offer?

Worcester Bosch 2000

Worcester Bosch 2000 30KW

Supply and installation of a new Worcester 2000 combi boiler, flue and fitting kit.

  • 7-year parts & labour warranty
  • From £32/month
  • Buy now pay later finance options

0mm (w) x 0mm (h) x 0mm (d)

Viessmann 050W

Viessmann 050W

Supply and installation of a new Viessmann 050W combi boiler, flue and fitting kit.

  • Get up to 2 years 0% APR
  • From £55.84/month
  • 10 year parts & labour warranty

0mm (w) x 0mm (h) x 0mm (d)

Vaillant ecoTEC Plus

Vaillant ecoTEC Plus

Supply and installation of a new Vaillant ecoTEC Plus 26kW combi boiler, flue and fitting kit.

  • Get up to 4 years 0% APR
  • From £33.34/month
  • 10 year parts & labour warranty

0mm (w) x 0mm (h) x 0mm (d)

Speak to a member of the team

By submitting your details you agree to our privacy policy

Replacement boilers,redefined.

All-inclusive boiler installations

New boiler

Installation

Controls¹

Pipework

Flush

Flue

Filter

Recycling

Aftercare

Which? Trusted Traders

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

2023 • 2024 • 2025

Get a new boiler with up-to 4 years
Interest-free boiler installationsAPR²

Next day boiler installations

If ordered before 3pm

Heatable installer

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
Which? Trusted Traders
Which? Trusted Traders. The first and only online boiler installation business to become a Which? Trusted Trader.
Heatable aftercare
All-inclusive aftercare. Each and every installation gets our exclusive 12 month workmanship warranty.
5 star reviews
5 star reviews. Across Trustpilot, Google and Reviews.io, we've got over 10,000 5 star reviews with an average rating of 4.9.
Gas safe registered
A safe choice. We're Gas Safe registered for boiler installations, and MCS certified for solar installations.

New Boiler FAQs

The final cost of a new boiler installation depends on several factors, including your location in the UK, the type of boiler, and the model or brand you choose. At Heatable we offer fixed price quotes, as well as finance allowing you to spread the cost of a new boiler into monthly installments.
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.
Yes, we do. In fact, we offer finance on everything. That's including low-rate interest-bearing finance, interest-free credit finance, buy now pay later, Klarna... and others. On the renewables side, we recently secured over £100m in funding via a specialist bank which has been set aside to break down the barriers for homeowners who're looking to crush their bills.
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.
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.

Services

Company

General

YouTubeLinkedInInstagram
YouTubeLinkedInInstagram

Services

Solar panelsBattery storageEV chargers

Company

Our storyContact usSitemapFAQ'sT&C's
Refer a friend

Get £250

General

InstallersReviewsPrivacy policyComplaintsModern slavery statement

© 2026 Heatable.

Heatable Ltd is registered in England and Wales No. 08804726. Our head office address is: The Old Rectory, Winwick, Warrington, WA2 8LE.

Heatable Ltd is authorised and regulated by the Financial Conduct Authority, FRN 805259 We are a credit broker and not a lender and offer credit from a panel of lenders. We may receive commission if your application is successful and the amount may vary depending on the product chosen and the amount of credit taken out. Credit is provided subject to affordability, age and status. Minimum spend applies. Not all products offered are regulated by the Financial Conduct Authority.

¹Wireless controls included on combi boiler installations only.

²4 years 0% APR available on selected products (subject to status and affordability).

³Saving based on the average energy bill of a detached home when upgrading from a G-rated boiler to an A-rated boiler. Source: Energy Saving Trust.

Gas Safe Registered
MCS Certified
RECC Certified
Trustmark Endorsed
NAPIT Certified
REFCOM Registered
Which? Trusted Traders