Compare Ireland's Cheapest Gas Providers with Selectra Today!
Call our Selectra agents today for expert and trusted advice on switching gas providers and make sure that you are getting the cheapest deal on gas prices.
20% Discount
22% Discount
20% Discount
A combination boiler combines your hot water and heating into one, giving you instantaneous hot water. Combination boilers cost from €2,000, and due to their high efficiency, can help you reduce your home heating bills. Those that run on fossil fuels such as gas or oil will be phased out by 2025 and are no longer permitted to be installed as part of new builds in Ireland.
A combination boiler (also known as a combi boiler, provides both hot water and heating from one single unit. It is linked to your mains water supply and the water is heated as it passes through the boiler. This allows you to have hot water as soon as you turn on the tap (or in about 20 seconds).
Combination boilers are popular for small to medium-sized homes as they can meet the heating demands and don’t require large hot water cylinders and tanks. Models are available for gas and oil fired systems, as well as for electricity and LPG but not biomass boilers:
The average combination boiler in Ireland costs between €2,000 and €3,000. The price you will pay depends on the following various factors:
In the following table, we have compiled some quotes for popular models of combination boilers.
| Combination Boiler Model | Price |
|---|---|
| Worcester Bosch 4000 15kW* | From €2,640 |
| Ideal Logic 18kW* | From €2,640 |
| Potterton Profile 18kW | From €2,390 |
| BAXI 600 System 18kW | From €2,490 |
Sources: Gasworks.ie*
Last Updated: September 2024
You should contact a plumber or engineer to advise you on the best option for your specific circumstances. You can also enquire to some energy providers who also offer boiler related services. For example, have a look at the Bord Gais boiler services, or contact Energia Ireland for further details.
Are There Boiler Grants in Ireland? Unfortunately, there are no longer boiler grants available in Ireland. The government is also planning on phasing out gas and oil boilers by 2025. However, there are grants available from the SEAI for heat pumps and solar water heaters.
Worried About High Heating Bills this Winter?
Call us today here at Selectra and one of our energy experts can help you switch to a cheaper provider for free in 15 mins!
Call Today to Switch Energy Providers and Save On Your Energy Bills
We're currently closed but please leave us your number and we'll give you a free callback as soon as we're open!
Let’s have a look at some frequently asked questions people have regarding combination boiler installations.
The person required to carry out the installation depends on the type of boiler.
Even though many companies are releasing more aesthetically pleasing boilers, most individuals still prefer to have them hidden away in their homes. The top locations to have a boiler installed include the following:
Can A Combination Boiler Produce Carbon Monoxide?
As they can burn fossil fuels such as gas and oil to produce heat, there is a risk of carbon monoxide poisoning if they are not taken care of with regular servicing.
Even if you have the most efficient combination boiler, you will still need to use it in a certain way in order for it to run at maximum efficiency. You should not keep the central heating on all the time. It’s more efficient to set the heating to come on only when you need it.
The domestic hot water, however, can be left on all the time as the boiler only provides hot water on demand. It can take up to 20 seconds for the water to actually get hot once you turn it on.
It’s recommended to set the temperature to 75°C for central heating and to 60°C for domestic hot water.
Combination boilers have controls that allow you to set the temperature of the water. The recommended temperature for domestic hot water is 60°C. This is the temperature that kills legionella bacteria.
Since these boilers don’t require a water tank, it’s unlikely that legionella bacteria will develop. Therefore, it is possible to set the water temperature a bit cooler if you like. For general safety, however, the recommended minimum temperature to kill bacteria is 60°C.
Generally speaking, a combination boiler can provide water for two showers, but the flow rate will be poor. Since they heat hot water on demand, ensuring that you have enough hot water for two showers is also a big request.
To have enough hot water for two simultaneous showers, you will need to have a larger boiler installed. Here are some general measurements to help you determine which size boiler would be the best option for your home:
| Number of Bedrooms | Number of Radiators | Number of Bathrooms | Boiler Size |
|---|---|---|---|
| Small flats and apartments | Up to 10 | 1 | 15-18 kW |
| Three to four bedrooms | Up to 15 | 1 | 18-24 kW |
| Larger homes | Over 20 | 2 or more | 30 kW+ |
| Varies | 1-10 | 1 | 21-28 kW |
| Varies | 11-15 | 2 | 29-35 kW |
| Varies | 16-21 | 3 or more | 36 kW+ |
Sources: Combi-Boilers.net, BoilerCentral.com, and DuffyHeating.ie
Last Updated: September 2024
Selectra's Combination Boiler Tip
"Make sure to regulary bleed your boiler to ensure that it continues to operate at full efficiency. Trapped air inside the radiators will affect your heating system"
Combination boilers are a good option for those looking to reduce the cost of their household heating bills, but are often a more involved and complex system to install and maintain.
Below you will find some of the pros and cons of combination boilers:
A combi boiler does not run both hot water and heating at the same time. The system will either transport the hot water to your radiators to heat your home, or it will transport it directly to your tap. The system will prioritise hot water requirements over room heating requirements.
Yes. From 2025, the installation of gas combination boilers and oil combi boilers will no longer be permitted in new builds in Ireland.
The services and products mentioned on this website may only represent a small selection of the options available to you. Selectra encourages you to carry out your own research and seek advice if necessary before making any decisions. We may receive commission from selected partner providers on sales of some products and/or services mentioned within this website. Our website is free to use, and the commission we receive does not affect our opinion or the information we provide.
Click to Start Saving
