Combi Boilers

For a new combi boiler call us on 0845 155 1277


Combi boilers (combination boilers) are a specific type of condensing boiler that provides a combination of both central heating and hot water in a single unit.

Combi boilers provide hot water on demand and they eliminate the need for a separate tank to store water as well as reducing the space required and the heat loss from storage.

Because they provide an instant, unlimited, hot water supply, new combi boilers are easily the most popular choice for central heating in the UK. They suit a wide range of households, and provide flexibility and control.

While you will need to match the power rating of the combi boiler to your family’s heating requirements, heating water ‘on demand’ (a major advantage of a combi boiler) improves energy efficiency and means that you are only heating the water you need, when you need it.

As combination boilers do not require hot water storage, heat loss is greatly reduced. This means that combi boilers can be more energy efficient than most other boiler types. 

To talk to one of our team about installing a new combi boiler, call us now on 0845 155 1277 or click here to fill in our online Arrange a Quote form

Key features of a combi boiler


  1. A combi boiler requires less space because it does not store hot water.
  2. It’s more energy efficient as heat loss is reduced and you only heat the water that you actually need.
  3. You can have hot water on demand.

Factors to consider before installing a new combi boiler


To talk to one of our team about installing a new combi boiler, call us now on 0845 155 1277 or click here to fill in our online Arrange a Quote form

Energy efficiency of combi boilers


A modern combination boiler can be a very environmentally sound choice for your household, heating only the water you need when you need it, and with no heat loss through inefficient storage.

Installing a new or replacement high efficiency combination boiler typically has a greater environmental benefit than swapping a 4×4 large family car for a modern Hybrid car.

A more efficient boiler costs less to run and maintain, and is less likely to let you down. If you have an older boiler, every time it starts up it could be wasting you money and energy. Remember, an old boiler may be working at only 60% efficiency and a new one should achieve over 90%.

Carillion Energy Services only installs energy efficient, A rated combi boilers (unless not technically possible) from the best names in central heating: Baxi, Ideal, Potterton and Worcester Bosch.

Whatever type of condensing combi boiler you choose, you can be sure that we will give you the best price and boiler installation service available.

We have a range of flexible payment plans to help you spread the cost of a new combi boiler. To find out more, call us on 0845 155 1277 or click here to fill in our online Arrange a Quote form