Combi Boiler Prices

Compare & SaveIn this page: jump to combi boiler prices quote form CombiBoilerPrices
Compare & SaveIn this page: jump to combi boiler prices quote form Guides & Advice
Covid-19 update How we're operating during the Covid-19 outbreak

Get quick supply and fit quotes from local installers

We work with 1000s of Gas Safe & OFTEC registered installers nationwide, to provide no hassle, no fee, no-obligation, combi boiler and installation quotes, local to you.
GET FREE QUOTES
What type of combi boiler would you like quotes for?
Gas
Electric
LPG
Oil Oil
What work do you require?
New Boiler plus Install
New Central Heating System
How many bedrooms do you have?
One
Two
Three
Four plus
How many bathrooms do you have?
One
Two
Three
Four plus
Enter your postcode
Please provide a valid UK postcode.
Please provide your full postcode with or without a space
Finally some contact details Finally some contact details
Please provide a valid first name
Please provide a valid surname
Please provide a valid email address
Please provide a valid UK phone number

Our installers are ready to quote you

To compare quotes, click the button below

Opt In - please untick this box if you don’t want to hear more about our energy saving services.

By completing this form, you agree to our privacy policy opens in new window and consent to being contacted by email, telephone and/or SMS by installers aiming to provide you with a quote.

ajax loading icon

Fetching Quotes

Your quote request has been received, thank you.

Our partners will be calling you shortly for a friendly chat to confirm your requirements and to arrange for up to four quotes to be sent to you to compare (which could help you save up to 50% off your new Combi Boiler and installation), please expect their call/email (sent to ).

Thank you for using Combi Boiler Prices.

Step 1 of 6
Select one to get started
  • Takes 15 seconds
  • Large trusted installer network
  • Gas Safe & OFTEC registered
  • 100% FREE
combi boiler prices are compare companies partners
out of 5
Combi Boiler Prices use the following known brands: Worcester, Valliant, Baxi, Ideal, Viessmann and Glow Worm
  • Worcester
  • Vaillant
  • Baxi
  • Ideal
  • Viessmann
  • Glow Worm

How it works

Our quote process takes under 60 seconds to complete, just answer some quick questions about your current heating set-up and we’ll do the rest…

You answer
1

You answer

Use our quick quote form above to answer some questions about your home and new/replacement Combi Boiler.

Blue
2

We match

Match with local Gas Safe & OFTEC installers, ensuring you get the best service and most competitive quotes possible.

Deal
3
combi boiler prices

You compare

Compare results and select a quote that’s perfect for you.

Click here to see a video of how it works!
Watch Video

Save money on heating bills with a new Combi Boiler

Did you know? Combi boilers are the most common boiler type in the UK, with the majority of homes choosing them over other systems.
92% Efficiency Rating as of 2018
  • Since April 2018, all new gas combi boilers installed in the UK must meet minimum 92% efficiency standards.
  • Modern combi boilers convert most of the fuel they use into usable heat.
  • Upgrading to a modern combi boiler can help reduce annual heating costs.
  • Combi boilers are compact and well suited to smaller homes and flats.
  • Combi boilers are generally quicker and simpler to install and maintain.
  • Combi boilers provide hot water on demand without the need for a storage tank.
Compare & Save On your new Combi Boiler & Installation

Combi Boiler Prices

Our Guide to Combi Boiler & Installation Prices

Combi boiler prices vary depending on home size, required output (kW), brand, warranty length, and installation complexity. Most homeowners can expect to pay between £1,800 and £3,500 for a new combi boiler supplied and installed.

Choosing the correct boiler size and output is essential to ensure reliable heating and hot water performance while keeping running costs as low as possible.

* This guide provides an indication of typical combi boiler prices. Always consult a Gas Safe registered installer to confirm the correct boiler size and installation requirements for your home.

  • Options for Small 1–2 Bedroom Homes

    The following Combi Boilers are well suited to homes with 1–2 bedrooms, typically requiring a boiler output between 24kW and 27kW.

    Brand / Model Output Efficiency Warranty Typical Price
    Brand: Worcester Bosch Greenstar 4000 Output: 25kW A 10 years* Price: £1,050
    Brand: Ideal Logic Max Combi Output: 24kW A 10 years Price: £950
    Brand: Vaillant ecoTEC Plus Output: 25kW A 7–10 years* Price: £1,150
    Brand: Baxi 800 Combi Output: 24kW A 10 years Price: £980
    Brand: Viessmann Vitodens 050-W Output: 25kW A 7 years Price: £900

    Compare FREE Combi Boiler & Installation Quotes

  • The following Combi Boilers are suitable for homes with 3–4 bedrooms, typically requiring a boiler output between 28kW and 34kW.

    Brand / Model Output Efficiency Warranty Typical Price
    Brand: Worcester Bosch Greenstar 8000 Style Output: 30kW A 10 years* Price: £1,450
    Brand: Ideal Logic Max Combi Output: 30kW A 10 years Price: £1,050
    Brand: Vaillant ecoTEC Plus Output: 32kW A 7–10 years* Price: £1,350
    Brand: Baxi 800 Platinum+ Output: 33kW A 10 years Price: £1,100
    Brand: Viessmann Vitodens 100-W Output: 32kW A 10 years Price: £1,200

    Compare FREE Combi Boiler & Installation Quotes

  • The following Combi Boilers are suitable for larger homes with 4+ bedrooms, typically requiring a boiler output between 35kW and 42kW to meet higher hot water demand.

    Brand / Model Output Efficiency Warranty Typical Price
    Brand: Worcester Bosch Greenstar 8000 Life Output: 35kW A 10 years* Price: £1,600
    Brand: Vaillant ecoTEC Plus Output: 38kW A 7–10 years* Price: £1,550
    Brand: Ideal Vogue Max Combi Output: 40kW A 12 years Price: £1,450
    Brand: Baxi 800 Platinum+ Output: 40kW A 10 years Price: £1,300
    Brand: Viessmann Vitodens 200-W Output: 42kW A 10 years Price: £1,650

    Compare FREE Combi Boiler & Installation Quotes

  • You’d be right in thinking that Combi Boilers are often cheaper than Regular Boilers (also known as conventional, heat-only or traditional boilers) to install. This is because a combi boiler doesn’t require a separate hot water cylinder or feed tank, and it can usually be fitted in a wide range of locations around the home.

    In 2026, a like-for-like combi replacement in the same location typically costs around £1,800–£3,200 installed (boiler + fitting). If you’re relocating the boiler to a different part of the property, costs are usually higher due to additional pipework, flue changes and labour, typically £2,200–£3,800.

    If the installation is more complex — for example converting a System or Regular boiler to a Combi — expect to pay more. Conversions often involve reworking pipework and removing the hot water cylinder and/or tanks.

    The table below provides a quick idea of common Combi Boiler installation scenarios and typical 2026 price ranges.

    Scenario Typical Price (Installed)
    Scenario: Replacing a Combi Boiler with a new Combi Boiler in the same location Price: £1,800–£3,200
    Scenario: Replacing a Combi Boiler with a new Combi Boiler in a different location Price: £2,200–£3,800
    Scenario: Replacing a System Boiler with a new Combi Boiler Price: £2,500–£4,500
    Scenario: Replacing a Regular Boiler with a new Combi Boiler Price: £2,700–£4,800

    Compare FREE Combi Boiler & Installation Quotes

  • Our recommendations are based on installer feedback, proven reliability, warranty strength, and long-term running costs.

    Installer-Rated Combi Boiler Picks

    Category Brand / Model Why It’s Recommended
    Category: Best Overall Boiler: Worcester Bosch Greenstar 4000 Why: Excellent reliability, strong UK support network, long warranty options
    Category: Most Reliable Boiler: Vaillant ecoTEC Plus Why: Proven engineering, quiet operation, excellent modulation and build quality
    Category: Best Warranty Boiler: Ideal Logic Max Why: Long warranty periods and good value for money across the range
    Category: Best Efficiency Boiler: Viessmann Vitodens 100-W Why: High efficiency, well-engineered components, strong reliability reputation
    Category: Best Mid-Range Boiler: Baxi 800 Platinum+ Why: Good performance, long warranty, and wide installer familiarity

    Compare FREE Combi Boiler & Installation Quotes

Compare & SaveOn your new Combi Boiler & Installation

Why use Combi Boiler Prices

  • FREE quotes with absolutely no hidden costs.
  • SAVE money by comparing competitive quotes from local installers.
  • AVOID rogue trades people with our strict vetting procedure.
  • EXPERT Gas Safe and OFTEC registered installers and engineers only.
  • SAVE time by completing our user friendly quick-quote form.
  • 100% FREE, no hassle, no fee, no obligation.
Compare & SaveOn your new Combi Boiler & Installation
only use a gas safe registered installer banner only use a gas safe registered installer square banner
combi boiler prices
Compared Combi Boiler Quotes
Verified