» Gas Boiler Replacement

Gas Boiler Replacement


Up to €1270 Back in SEAI Grants, Gas Boiler Replacement Dublin, Kildare, Meath, Wicklow, and Nationwide. If your current boiler is over 15 years old it may be time for a gas boiler replacement. The first step in replacing your existing old gas boiler with a high efficient “A” rated model is deciding which boiler type suits your home or business. Usually the most cost-effective gas boiler replacement is a like-for-like install, in other words if you currently have a system boiler installed, the most straight-forward replacement choice would be a system boiler. This would reduce installation time, materials and equally reduce your expenditure. We also offer information on finance packages to suit your budget, so you can finally experience the cost saving addition a new "A" rated gas boiler makes to your energy bills.

We are the experts when it comes to deciding on a gas boiler replacement , our team is on hand to assist you in the decision making process when deciding on which gas boiler best suits for you.

Get an SEAI grant towards the cost of replacing you Gas Boiler.

 If your home was built and inhabited before 2006 you may be entitled to an SEAI Grant and Energy Credits towards the cost of a new boiler. To avail of this grant scheme you will need to upgrade your current heating controls when replacing you gas boiler. The total SEAI grant amount is dependent on heating controls you choose to have installed.

For example, if you replace your current gas boiler to a high efficient model and install fully integrated heating controls you can receive as much as €1229 (SEAI Grant €750, Energy Credits €479) in grants and energy credits. This represents a substantial saving!

For more Information on grants and credits available apply online

Get A Free Boiler Replacement Quotation

The first step in when looking for a gas boiler replacement is deciding on which type and model of gas boiler best suits your home or business, taking into consideration your current boiler type, location and age.If you are unsure of which boiler best suits your needs, we have a dedicated page on the types of gas boilers that you can avail of. Alternatively you can contact us and we will be delighted to offer advice and guidance to help you in your decision making.

To avail of a free no obligation quotation contact us to arrange an expert heating engineer member for a free site visit at convenient time and date, where your current system will be inspected and recommendations made to ensure the best choice and value for money.

Once you have received your free quotation, it will be valid for 30 days and comes with a fixed price guarantee.


Benefits of replacing your gas boiler

While replacing your old gas boiler for a new “A” Rated high efficiency gas boiler can be an expensive investment, there are benefits to be had especially if you decide on a boiler upgrade with energy saving controls.Worcester Bosch Gas Boiler Replacement

Improved Efficiency

The efficiency of your old boiler could be as low as 55% - 70% depending on a number of factors, while a new “A” Rated model will have a minimum seasonal efficiency of 90%.

Lower Fuel Bills

On average a gas boiler is our biggest expense when it come to our annual fuel bills with it accounting for 60% of our total energy bills. By changing to a  new energy efficient model you could save 30% on your annual fuel bill

 Improved Performance

When correctly sized and installed a new “A” Rated gas boiler offers better performance from your heating system.

5-10 Year Warranty

We offer a minimum full 5 year warranty on every boiler installed by our expert team. Depending on the model of boiler chosen some boilers from our range come with a full 10 Year warranty to give you total peace of mind.

Quiet Operation

Improved boiler design makes for a significantly quieter boiler when compared with older boiler types. Dependant on the location of your boiler this can make a massive difference.

Smaller Size

New boilers tend to be smaller in size meaning more installation options, in some circumstances they can even be located in a kitchen cupboard.

Energy Saving Heating Controls

Correctly installed heating controls will not only save you money on your fuel bill but will also improve the comfort of your home.

Replacing your Gas Boiler? Which Boiler Brand is best for you?  

With so many different makes of gas boilers to choose between, it can be quite the task to choose the correct brand that suits both your budget and central heating needs. Worcester Bosch is our number 1 selling boiler brand, and offer excellent warranties coupled with award winning support, but are a more expensive purchase. Where price is of concern we have high quality lower costing gas boilers to ensure you get a great boiler for home.


Bosch is associated with quality and Worcester Bosch are no different. Based in Worcester in the UK since 1962, Worcester Bosch is a market leading UK boiler manufacturer whose product range includes Gas Boilers, Oil Boilers and Renewable Technologies. Their Range of Greenstar Gas Boilers has won the coveted "Which" Best Buy for 7 Years in a row, and are one of the most reliable boilers available. Warranties range from 7 – 10 Years depending on the chosen boiler and controls.

Browse Our Range Of Worcester Bosch Gas Boilers  


Vokera are one of the best know gas boiler brands in Ireland. With an office in Callan in Co. Kilkenny Vokera have a firm foothold on the domestic gas boiler market in Ireland and are popular choice for both installers and homeowners. Being a cheaper alternative to other boiler brands Vokera offers a quality product at reasonable price. Vokera Boilers are designed for both simplicity and reliabilty.  

 Ideal have been manufacturing boilers for over 100 years from their UK based manufacturing facility. Ideal Logic gas boilers have a fantastic reliability record and offer a direct replacement for the very popular but outdated Ideal Classic. Ideal boilers offer an excellent heating solution for those seeking a mid-range alternative to Valliant and Worcester Bosch.


Vaillant are a leading German designed, British manufactured Gas Boiler brand. Although Vaillant may not be a very common boiler in Irish homes, make no mistake Vaillant are a leading boiler manufacture who's end product is both reliable and of an excellent quality. The award winning ecoTec range of Vaillant gas boilers carry up to a 10-year warranty.  

Baxi are part of the potterton myson group of companies, for nearly 40 years Baxi have been providing heating and water boilers for Irish homes and are a popular boiler brand throughout Ireland. Baxi offer a wide range of gas boilers, water heaters and various other heating components. If you are looking for a gas boiler replacement within budget, The Baxi range of gas boilers offers a reliable replacement option.


In 2001 Glow-worm was acquired by the Vaillant group, a world leader in the manufacturing of high quality boilers. Prior to this Glow-worm have been producing reliable gas boilers and heating products for over 80 years, from their Derbyshire based plant. Glow-worm are a well-known reliable boiler brand in Ireland and the UK. They offer warranties of up to 5 years on their range of domestic gas boilers. 


What Our Customers Are Saying

What to consider when replacing your Gas Boiler

The location of your new gas boiler and model is likely to impact install time and costs, particularly if you have decided on a relocation. Below are some things to consider when deciding on your new gas boiler replacement.

Gas Boiler Type/Model - The model of gas boiler chosen will impact on your price. The higher the quality of the selected boiler the higher the costs associated with it, for this reason we have a selected range of gas boilers to suit every budget while minimising the difference in quality.

Heating Controls - Proper heating control will not only reduce your fuel bill but will also make for a easier controlled, better performing central heating system. Dependent on the level of heating control required the installation time and cost will be impacted although grants are available to offset this additional expense.

Piping -  Your new “A” rated condensing gas boiler may require a larger gas pipe dependent on the distance from the gas meter, current pipe size and the amount of gas appliances served by the current gas line. In addition if you are planning on relocating the new gas boiler, provisions will have to be made for re-connection of the existing heating system piping to the newly installed gas boiler. Floors coverings may have to be temporarily removed to allow the routing of piping to serve the boiler in its new location.

Condense - Your new high efficient boiler will require a means of discharging its water vapour by product to a suitable drain or soak away. 

Boiler Flue - The length of run and Flue terminal location are two very important factors to be considered when choosing you boiler location. A boiler located internally with no direct access to an outside wall will require addtional flue lenghts and components and this will impact your expenditure.

Heating Zones - Dependent on your current heating system capabilities additional piping and cabling may be required dependent on the type of zoning required. (Hot water and Radiators)

Space Requirements - Boilers come in all different sizes and with that their minimum space requirements vary greatly. It’s Important to note the minimum space requirement for service, repair and Installation.

What will my Gas Boiler Replacement Cost? Click Here to Find Out Now!

Gas Boiler Efficiency  

If you have gas fired central heating in your home, your gas boiler is the main component of your central heating system. It produces the heat energy we require for both warmth and hot water. On average your gas boiler will be responsible for around 60% of your homes carbon emissions and equally the single largest consumer of energy in our homes. It is because of this high energy usage; careful consideration must be given to boiler efficiency in order to reduce both your energy bills and carbon footprint. Modern condensing gas boilers are typically over 90% efficient and replacing your old fashioned central heating boiler with one could mean a saving of over 20% on your annual gas bill.  In Ireland, there are many condensing boiler brands and models to choose between. But in term of efficiency levels there is very little difference between them. The most important factor when choosing the most efficient boiler for your home is the correct type and sizing. 

Gas Boiler Reliability 

When considering replacing your boiler, one of the most important things to consider is reliability. Just like cars there are many different makes and models to choose from, each with their own range and each offering very different levels of quality reliability warranty and pricing. No boiler can be considered 100% reliable but in the event that you are unlucky enough to experience a boiler fault, warranty back-up and support are also important factors to be taken into account. According to an independent survey by Which.co.uk the most reliable boiler brands are Worcester Bosch and Valliant. Being accredited installers for Worcester Bosch we can offer extended warranties for all Bosch Boilers installed. 

Will Replacing My Gas Boiler Result In Cheaper Gas Bills?

When upgrading your current gas boiler for a new condensing model you can expect some saving on your annual gas bill, however this is dependent on a number of variants with the most important being boiler efficiency. Below we have put together a likely cost saving related to upgrading to a new high efficient condenser model. 

If you opted to for a gas boiler upgrade with a minumum effieceny value of 90% costing €1968.00, these are the savings to be expected. You can further increase your annual fuel savings with energy saving control measures and increasing your home insulation value. 

Efficiency of your old boiler 

Annual saving on your gas bill in % 

Annual saving on your gas bill in € 

How long it will take for your boiler to pay for itself 




7.6 years 




9 years 




11.4 years 




14.8 years 




22.8 years 

These calculations are based on a small home with an annual gas bill of €728 p/a. 


When To Get A New Gas Boiler 

  • Now you know the cost saving benefits you get with replacing your old-fashioned boiler with a new condensing model, but can't decide when is the right time to make the investment. Below we have put together some pointers that can help you with your decision. 
  • If your gas boiler is over 15 years old it may be time for a replacement. Efficiency levels decline with age, and may be as low as 60% or even lower. This means for every 100-euro spent on heating bills only 40 euro is effectively wasted. 
  • If you are unlucky enough to have had your boiler breakdown and it is not cost efficient to repair. If you have had a qualified registered gas installer out and you have been told it's no longer feasible to repair it is time for a new boiler. 
  • If your current boiler has a pilot it may be worth replacing, the constant pilot required is wasteful of gas. 
  • If you currently have a gas fired back boiler or floor mounted model, these boilers are not considered to be very efficient and replacing may make financial sense.  
  • If you gas boiler has a rather large box type flue, these older boilers are very wasteful of energy. 
  • If you have had a qualified register gas installer declare your boiler unsafe. 
  • If your gas boiler has an energy rating of G or Lower. 
  • If you are considering upgrading your current heating controls, it may be worthwhile to upgrade your gas boiler too. Currently there are grants available to home owners through the home energy scheme. 
  • If you are carrying out extensive renovation it makes sense to upgrade your central heating, controls and boiler. 

Whats Involved When Replacing My Gas Boiler

How long will it take?

The replacement of your old gas boiler with one of our "A" rated gas boiler models will usually take 1 full day for a straight forward gas boiler replacement and system flush. Although this is dependent on the condition of the central heating system, gas boiler location, gas pipe size, access to a suitable drain for the condensate by product as well as any additional heating controls or zoning.

Will access be required to the whole house?

Yes we will require access through out the house for the purpose of system draining, refilling of the heating system, Flushing of the heating sytem and to ensure the heating system is fully operational.

Do i need to move or cover any furniture or floor coverings?

No the gas boiler replacement team will remove/cover any floor coverings, furniture or items required during the installation.

What will i get on completion? 

A Completion Pack complete with all manuals and user instructions, details of your extended warranty and a gas compliance certificate.

How can i Pay? 

You can pay by credit card, cheque, bank draft or cash. We also have finance options available.





The importance of Flushing during a Gas Boiler Replacement

The quality of the water in your heating system is paramount to system efficiency, performance and expected boiler life. That’s why we will not install an expensive “A” rated boiler on your current heating system without knowing what we are up against. A water sample from your system will be taken by our sales team member and a quality test will be performed. Once we are satisfied an estimate will be given and cost agreed.

Our choice of system flush is the use of a magnacleanse rapid flush filter, this is a cost effective system flush which will remove sludge particles increasing efficiency and performance.

Poor water quality is the single biggest factor affecting system efficiency and boiler performance. It can also cause extensive damage to your gas boiler. If you are looking for a gas boiler replacement insist on a water quality test.

System Flush – Dependent on water quality a chosen cleaning agent will be selected and full system flush will be performed.

Magnetic Filter - Every boiler Installed by Gasworks will be accompanied by an energy saving magnetic filter.

System Protector - Each system will be adequately dosed with a protecting agent, by maintain the water quality in the heating system we protect vital components reducing maintenance and fuel costs.

Watch the video and find out what is involved in flushing out your heating system to ensure the correct water quality for your new gas boiler replacement model.

When it comes to a new gas boiler replacement. We are proud to offer some of the best gas boiler warranty’s available in Ireland. Working with leading manufactures we are able to offer full 5, 7, 8 and 10 year warranties dependent your chosen boiler model. An annual service will be required to avail of these extended warranties.