New Condensing Boiler Installation

Condensing boilers are designed to provide homeowners with a highly efficient way of heating their home. Manufactured to generate effective heating with minimum fuel usage, these boilers could help you save up to £200 on your annual energy bill**. At HomeServe, all of the boilers we install are condensing. Keep reading to find out more about the different types of condensing boilers we offer.

Our free online quote tool could help you find the right boiler for your home and give you an idea of how much a new condensing boiler installation could cost.



How Do Condensing Boilers Work?

Condensing boilers heat homes by burning gas or oil as fuel. When this is done, water vapour is released as a by-product and instead of being wasted and released through the flue, a condensing boiler recovers this latent heat; passing it through their heat exchanger which then cools and condenses it back into a liquid form (i.e. condensate). This heat is then used to help warm up the cool water that returns from your radiators.


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Types of Condensing Boiler

There are 3 types of condensing boilers; each has its own capabilities and unique features that may be suitable for different properties and central heating requirements. These include:

Combi boilers:

  • Manufactured to provide both heating and hot-water from 1 single unit
  • Compact in size to save space
  • On-demand hot water as no tanks or cylinders are required


Read more about Combi boilers

Conventional Boilers:

  • Designed to deliver heating and hot-water with the use of an additional cold-water tank and hot-water cylinder
  • Hot-water could be delivered to multiple taps at once
  • Could be fitted with an electrical immersion heater to provide a backup in case of a breakdown/loss of hot-water access


Read more about Conventional boilers

System boilers:

  • Manufactured to provide heating and hot-water with the use of an additional hot-water cylinder
  • No cold-water tank is required; potentially saving space
  • Designed to deliver hot-water to multiple taps simultaneously


Read more about System boilers


Advantages of a Condensing Boiler

In 2005, it became compulsory for all new gas boilers installed in the UK to be condensing; this was introduced to reduce the nation’s impact on the environment. Advantages of condensing boilers include:



Designed to deliver quality central heating with reduced energy wastage, condensing boilers are designed to be highly energy-efficient.

Designed to be environmentally-friendly

Condensing boilers work to lower greenhouse gas emissions, potentially making them more environmentally-friendly than a non-condensing boiler.

Economical to run

By allowing less energy to be wasted, an energy-efficient condensing boiler could help you save up to £200 on your energy bills**.

Modern and diverse

Many of the condensing boilers that we supply at HomeServe are compact in size and available in a range of different outputs to suit the heating and hot-water needs of a variety of homes. A number of boilers also come with advanced features to help you monitor and control your heating with ease.


At HomeServe, we work with some of the leading brands in the industry to provide you with a varied selection of A-rated, energy-efficient condensing boilers.

There is a plethora of brands that manufacture efficient condensing boilers. Examples include:


Worcester Bosch Logo

A popular British brand, Worcester Bosch is dedicated to manufacturing top-quality, energy-efficient boilers.

    Dependable and award-winning, the Worcester Bosch is a popular choice for homeowners in the UK, here are some reasons why:

  • Awarded with the Which? Best Buy award
  • top rated boiler brand
  • Reliable heating
  • Dependability


Find out more about Worcester Bosch boilers.

Ideal Logo

Based in the city of Hull, this boiler brand has been manufacturing heating products for over 100 years.

  • Good Housekeeping Reader Recommended
  • Aim to achieve ultimate customer satisfaction
  • Founding principles of quality, innovation and value


Find out more about Ideal boilers.

Vokera Logo

Part of the Riello Group, Vokèra manufactures its boilers with energy-efficiency and customer satisfaction in mind.

  • Over 35 years of experience
  • H & V News Award nominated for Domestic Heating Product of the Year
  • Brand policy of continuous innovation and technological advancement


Find out more about Vokera boilers.

Vaillant Logo

Perceived by many as an industry trailblazer, Vaillant has been manufacturing quality heating solutions for over 140 years.

  • Extensive industry experience
  • Prioritises customer service
  • Forward thinking


Find out more about Vaillant boilers.

Baxi Logo

Founded in 1866, Baxi aims to manufacture boilers that could effectively and efficiently meet homeowners’ needs.

  • Company ethos of pride, passion and positivity
  • Values of reliability, respect & innovation
  • Aim to produce boilers that are easy to install, maintain and use.


Find out more about Baxi boilers.

Most Popular Condensing Boilers

There are a number of condensing boilers available, so making a choice for your home could be tough. To help you with your decision, here’s our top 4 recommended condensing boilers:

Worcester Bosch Greenstar 25i Combi

  • Designed to provide effective heating
  • Manufactured to deliver hot-water on-demand
  • User-friendly controls
  • 400mm x 710mm x 330mm (Width x Height x Depth)
  • Suitable for most small to medium homes with 1 shower room

Worcester Bosch Greenstar 30i Combi

  • Simple boiler controls
  • Instantaneous hot-water
  • Low energy pump designed to reduce electrical usage
  • 400mm x 710mm x 330mm (Width x Height x Depth)
  • Suitable for most small to medium homes with 1 bathroom

Ideal Logic C24 Combi

  • Compact dimensions
  • Low lift weight
  • 7-year manufacturer backed warranty***
  • 395mm x 700mm x 278mm (Width x Height x Depth)
  • Suitable for most small to medium homes with 1 shower room

Ideal Logic C30 Combi

  • Large digital display
  • Energy Saving Trust endorsed
  • Designed to fit into a standard kitchen cupboard
  • 395mm x 700mm x 278mm (Width x Height x Depth)
  • Suitable for most small to medium homes with 1 bathroom

Cost of a Condensing Boiler Installation

Condensing boiler installation prices can vary and tend to depend on the brand, size and model of the boiler you choose, as well as the complexity of your installation.

Although boiler installations can be expensive, a new energy-efficient condensing boiler could provide you with an opportunity to make savings on your annual energy bill, so it could be a worthwhile investment**.

Try our free online quote tool today to get an indicative estimate for your new condensing boiler installation; you could also receive a recommendation for a boiler that could suit your home and needs. All you have to do is answer a few questions about your household and you could receive your free quote.


Which condensing boiler do I need in my home

Condensing boilers come in a range of different sizes, so it could be difficult to figure out which option is best for your home. In order to select a suitable boiler, you should first find out the kW output your home requires. A boiler’s kW output dictates its ability to cope with your heating and hot-water demands; it will usually depend on the number of radiators and bathrooms you have in your home.

Here’s some examples of property types and kW outputs that may be suitable:

24-27kW 1-2 bedroom, 10 radiators, 1 bathroom
28-34kW 3-4 bedroom, 15 radiators, 1-2 bathroom
35-42kW 4+ bedroom, 20 radiators, 2+ bathroom


(This information has been supplied By Help-Link UK limited and has been produced for information purposes only and should not be used or relied upon as a substitute for professional advice by a suitably qualified engineer.)

Contact us today to kick-start your new boiler installation. We could provide you with the help and advice you need to get your central heating working to a high standard.

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*5% online discount is available to domestic gas and LPG customers who receive an online quote for all boiler brands excluding the Ideal Logic HE24, HE30, HO15 & HO18 and Worcester Bosch 25i ERP, 30i ERP, 15ri & 18ri boilers which qualify for the winter bundles offer. £50 additional discount available on all like-for-like system swaps and a £100 additional discount is available on conventional to combi, and combi to conventional boiler swaps. Online discounted price is only available for the duration of the 14-day quote validity which starts from the day the quote was given. Help-Link UK Ltd include a filter as part of your quote as this is highly recommended by the boiler manufacturer as a key component in maintaining boiler health, functionality and may potentially be looked upon favourably by manufacturers when assessing warranty work. This filter can be removed at the customer's request. Quote also includes a programmable thermostat for all combi boiler installations as this is a legal requirement as part of the Boiler + legislation introduced 6th April 2018, and cannot be removed from the installation unless; it is replaced with an alternative smart thermostat; or another energy saving measure as listed in the Boiler + legislation or if a smart thermostat already exists within the property. Alternative thermostats, including smart thermostats are subject to an additional charge.


***Subject to an annual service at the customer's expense. Warranty extension from 5-years to 10-years only available on Worcester Bosch and Ideal gas boilers and may be subject to an additional charge.