Gas Boiler Replacement Dublin
Is It Time to Replace Your Gas Boiler ?
Most Dublin homeowners don’t think about their boiler until something goes wrong. The heating stops working on the coldest morning of the year, or the repair bills have quietly crept up to the point where a new boiler would have been cheaper. Sound familiar?
The average gas boiler lasts between 10 and 15 years. After that, efficiency drops, breakdowns become more frequent, and the cost of keeping an old boiler running starts to outweigh the cost of replacing it. A modern A rated condensing boiler operates at over 90% efficiency ,older models typically manage 65 to 75% at best. That gap comes straight off your gas bill every single month.
At Dublin Gas Boiler Service, we carry out gas boiler replacements across Dublin and North County Dublin from our base in Swords. Every replacement is carried out by RGI registered engineers and comes with a Certificate of Conformance and a free first annual service.
Not sure whether your boiler needs a service, a repair, or replacing altogether?
Not sure whether your boiler needs a service, a repair, or replacing altogether? You are not alone. For most Dublin homeowners, that uncertainty is the most stressful part. Is it going to cost €200 or €2,000? Should you call someone out or just leave it and hope for the best? Not knowing what you are dealing with is what keeps people up at night, not the boiler itself.
We built our free Boiler Advisor Tool to take that anxiety away before you pick up the phone. Answer a few simple questions about your boiler and your home and we will give you an instant rough estimate in under two minutes. No phone call needed, no obligation, no sales pressure. Just a straight answer to help you make an informed decision.
If your boiler needs replacing, the tool will also recommend the right size and type for your home and give you a ballpark cost based on current 2026 prices in Dublin. That way you already know roughly where you stand before anyone sets foot in your door.
Boiler Advisor Tool
Dublin Gas Boiler Service — Rush & Swords, North Co. Dublin
Gas Boiler Replacement Cost Dublin — 2026 Prices
| Installation Type | Typical Cost Range |
|---|---|
| Combi boiler (supply and fit) | €2,800 – €3,600 |
| System boiler (supply and fit) | €2,600 – €3,950 |
| Full central heating system | Custom Quote Required |
| Back boiler to combi conversion | €4,000 – €6,500 |
Enquire About A New Gas Boiler
Take the Guesswork Out of Boiler Problems
There’s nothing more stressful than a boiler that’s playing up — especially when you have no idea whether you’re looking at a €200 repair or a full replacement. Most people put off dealing with it simply because they don’t want to pick up the phone without knowing what they might be getting into.
That’s exactly why we built this tool.
Our Boiler Advisor walks you through a handful of straightforward questions about your boiler’s age, how often it’s been breaking down, whether your heating bills have crept up, and how your home is set up. Based on your answers, it gives you a clear, honest steer on what your boiler most likely needs — and if replacement looks like the right call, it’ll give you a rough idea of what that’s likely to cost.
It won’t replace a proper quote — but it will give you:
- A clear starting point before you pick up the phone
- A rough cost range so there are no nasty surprises
- Confidence that you’re making an informed decision
- An honest recommendation with no sales pressure attached
We know that for most households, a boiler replacement is a significant spend. Knowing roughly what you’re looking at upfront — even in ballpark figures — takes a lot of the anxiety out of the process. Our tool gives you that breathing room.
All estimates are based on current 2026 supply and fit pricing for the Dublin area and are clearly labelled as rough guides only, not quotes. Every home is different, and a proper assessment will always give you the most accurate figure. But as a starting point, this gets you most of the way there.
Ready to find out where you stand? Use the tool above or get in touch with our team directly — we’re based in Rush and Swords and cover all of North County Dublin.
6 Signs Your Gas Boiler Needs Replacing
Not sure whether to repair or replace? These are the signs we see most often in Dublin homes that tell us a boiler is on its way out rather than worth fixing.
1. It’s over 12 years old Age alone isn’t a reason to replace a boiler, but combined with any of the signs below it usually tips the balance. Boilers over 12 to 15 years old are rarely cost effective to repair — parts become harder to source and efficiency has typically fallen well below what a new boiler would deliver.
2. Your heating bills keep rising If your gas usage is climbing but your habits haven’t changed, your boiler is working harder than it should to produce the same heat. That’s wasted money every month. A new A rated boiler can reduce gas bills by 20 to 30% annually compared to an older inefficient model.
3. Frequent breakdowns One repair a year is normal. Two or three in a season is a boiler telling you something. When the cost of repairs starts to add up, replacing the boiler almost always makes more financial sense than keeping the old one on life support.
4. Uneven heat across the house Some rooms warm up quickly while others stay cold, even with the thermostat turned up. This can point to a boiler that’s no longer producing enough output, or a system that’s badly out of balance. Either way it’s worth getting assessed.
5. Unusual noises Banging, kettling, gurgling, or clunking sounds coming from the boiler are not something to ignore. They can indicate limescale build up on the heat exchanger, airlocks, or failing internal components , often a sign the boiler is working against itself.
6. Radiators taking longer to heat up If you’re noticing your radiators taking much longer than they used to reach temperature, or they’re only warm at the top and cold at the bottom even after a power flush, the boiler output may be struggling.
If two or more of these apply to your boiler, it’s worth a call. We’ll give you a straight assessment, repair or replace with no pressure either way.
The Ideal Logic Range — Our Recommended Boiler for Irish Homes
Ideal Logic Gas Boiler Replacement, with models offering basic functionality more expensive boilers offering advanced functionality.
The cost, for example of the 18kw Logic Max System is €2,600 + v.a.t or a 24kw Logic Max System costs 2,700 + V.A.T in 2026. These are examples of premium Ideal Logic Boilers and as such comes with a 10 year warranty.
It is those during those later years in a boilers life, when any ageing boiler can give issues , which is why a 10 or 12 year warranty can save you money in the long run and comes with additional functionality in comparison to the standard boilers.
However it is important to note that we never offer any boiler which is not suitable for the environment in which it is to be used, there is absolutely no compromise on the heat output required.
All new Replacement Gas Boilers supplied and fitted by us come with a full manufacturers warranty and your first annual service will be provided free of charge.
Don’t forget to ask for our current Special Offers on Logic Max System 18 and Combi 24kw Gas Boiler Installations.
Ideal Logic Boilers
Logic Max System IE 18kw - Get A great Deal Today
Logic Max System IE 18KW Gas Boiler
The Ideal Logic Max System IE boiler is a brand new market leading offering. Combining the same great features as the award-winning Logic IE System with the addition of a high quality Ideal System filter.
The Ideal Logic Max System IE comes complete with an Ideal System filter. With a 10 year warranty*, it’s a compact cupboard fit makes it a discrete and reliable option for your home. As a new or as a Replacement Gas Boiler the Logic Max System Boiler is compatible with the Halo controls range and displays a service reminder, helping you to get the most out of our boiler.
Features Of The Incredible Gas Boiler :
- 10 year warranty* ( When Registered Within 30 Days of installation and serviced annually )
- Made for Ireland
- Compact cupboard fit
- NOx class 6
- Easy to see pressure gauge
- Frost protection
- Ideal System Filter included in the boiler pack
- Easy to use fully back-lit LCD display
Logic Max System IE 24KW Replacement / New Gas Boiler
Call Or Message Us For A great Deal Today
Logic Max System IE 24KW Gas Boiler
The Ideal Logic Max System IE 24kw boiler is a brand new market leading offering. Combining the same great features as the award-winning Logic IE System with the addition of a high quality Ideal System filter.
The Ideal Logic Max System IE comes complete with an Ideal System filter. With a 10 year warranty*, it’s a compact cupboard fit makes it a discrete and reliable option for your home. As a new or as a Replacement Gas Boiler the Logic Max System Boiler is compatible with the Halo controls range and displays a service reminder, helping you to get the most out of our boiler.
Features Of The Incredible Gas Boiler :
- 10 year warranty* ( When Registered Within 30 Days of installation and serviced annually )
- Made for Ireland
- Compact cupboard fit
- NOx class 6
- Easy to see pressure gauge
- Frost protection
- Ideal System Filter included in the boiler pack
- Easy to use fully back-lit LCD display
Ideal Logic Combi Boiler 24KW - From €2,800 + VAT
Ideal Logic 24kw Combi Gas Boiler
The Ideal Logic 24kw Combi New OR Replacement Gas Boiler comes complete with an Ideal System Filter, creating an enhanced and more efficient model. This boiler is made with superior components and features an easy to use interface, giving you constant peace of mind. This stylish design is easy to use, quick to install and also compatible with the Halo controls range, allowing you to schedule your home’s heating.
Features Of The Incredible Gas Boiler :
- 12 year warranty* ( When Registered Within 30 Days of installation and serviced annually )
- Made for Ireland
- Simple to install & service
- NOx class 6
- Easy to use full colour display
- Premium components
- Frost protection
- Halo Wi-Fi & RF control compatible
- Ideal System Filter included in the boiler pack
- Stainless steel heat exchanger
What's Included With Every Boiler Replacement
Every gas boiler replacement carried out by Dublin Gas Boiler Service includes:
- Full removal and disposal of your old boiler
- Supply and installation of your new boiler
- Flue kit and all associated pipework connections
- Chemical system flush to protect the new boiler
- Commissioning and pressure testing
- Controls setup and walk through with the homeowner
- Certificate of Conformance issued on completion
- First annual service free of charge
We also offer the following alongside any replacement where needed:
- System health inspection — before any new boiler is connected, we assess the overall condition of your existing system. Pipework, radiators, valves, water clarity, and pressure are all checked. This tells us exactly what the system needs and avoids any surprises after the new boiler is commissioned.
- Chemical flush — included as standard with every replacement. A quality inhibitor is added to the system as part of commissioning, cleaning and protecting the pipework and new boiler from day one.
- Magnacleanse power flush — where the system inspection reveals a genuinely dirty system — indicated by cold spots on radiators, dark water when bleeding, or noisy pipes — we recommend a Magnacleanse power flush before installation. This is a more intensive mechanical flush that captures sludge and debris magnetically, giving the new boiler the cleanest possible start. Only recommended where it’s actually needed. [See our Power Flush page →]
- Magnetic filter installation — catches black sludge before it enters the new boiler, extending its lifespan significantly
- Smart thermostat and controls upgrade — app controlled heating and hot water from your phone
- Radiator upgrades — where existing radiators are undersized or beyond serviceable condition
Why Choose an Ideal Logic Boiler for Your Dublin Home
A question we get asked regularly is why we favour Ideal over other well known brands. The honest answer comes down to a few practical factors specific to Irish homes.
Ideal is the only boiler range designed from the ground up for the Irish market. Many Dublin properties, particularly older homes across North County Dublin, Swords, Rush, and the surrounding areas have half inch gas lines. A number of other popular brands require a gas line upgrade to three quarter inch for installation, adding unexpected cost to what should be a straightforward replacement. Ideal Logic boilers are built to work with the existing infrastructure in most Irish homes.
Parts availability also matters. If your boiler needs a component replaced during a service or repair, Ideal parts are stocked at virtually every plumbing supplier across Dublin. With some other brands, parts can take days to arrive, leaving you without heating while you wait.
That said, we never fit a boiler that isn’t right for the property. If your home is better suited to a Worcester Bosch, Viessmann, or Baxi, we’ll tell you. The right boiler for your home is always the recommendation, not the one we happen to have on the van.
Areas We Serve In Dublin
We’re based in Rush and Swords, North County Dublin and cover North County Dublin as our primary area, south as far as the Liffey, and west as far as Blanchardstown, Dublin 15.
North County Dublin: Swords · Malahide · Portmarnock · Donabate · Rush · Lusk · Balbriggan · Skerries · Kinsealy · Rolestown
Dublin City Northside: Drumcondra · Clontarf · Raheny · Artane · Santry · Finglas · Cabra · Phibsborough · Glasnevin · Ballymun
West to Dublin 15: Blanchardstown · Castleknock · Mulhuddart · Tyrrelstown · Hartstown
Frequently Asked Questions
How quickly can you replace a gas boiler in Dublin?
In most cases we can carry out a like for like replacement within one to two days of your call. We keep the most common Ideal Logic models in stock, so you’re not waiting on a parts order before the job can be booked.
How long does a boiler replacement take?
A straightforward like for like swap is typically completed in one day. Conversions — such as replacing a back boiler with a combi, or relocating the boiler to a different position — usually take one to two days depending on the pipework involved.
Should I repair my boiler or replace it?
If your boiler is under 10 years old and the repair is straightforward, fixing it usually makes sense. If it’s over 12 years old, has broken down more than once this year, or the repair cost is more than a third of the replacement cost, a new boiler is almost always the better financial decision. We’ll give you an honest assessment when we look at it.
What is the difference between the Ideal Logic and the Ideal Vogue Max?
The Logic Max is a reliable, mid range boiler with a 10 year warranty — the right choice for most Dublin homes. The Vogue Max is Ideal’s premium model, built with superior components including a stainless steel heat exchanger, a 12 year warranty, and a full colour display. For homeowners who want the longest warranty and highest specification available, the Vogue Max is worth the additional investment.
Do I need a power flush when replacing my boiler?
If your existing system has significant sludge build up — indicated by cold spots on radiators, discoloured water from the bleed valve, or noisy pipes — a power flush before installation is strongly recommended. Fitting a new boiler to a contaminated system will shorten its lifespan and void some manufacturer warranties. We assess the system before every replacement and advise honestly on whether it’s needed.
What warranty comes with a new Ideal boiler?
The Ideal Logic range comes with a 7 year warranty as standard, rising to 10 years on the Logic Max. The Vogue Max carries a 12 year warranty. All warranties require the boiler to be registered within 30 days of installation and serviced annually by an RGI registered engineer. We issue a service reminder with every installation and offer annual servicing to keep your warranty intact.
Will you remove and dispose of my old boiler?
Yes — removal and disposal of your old boiler is included in every replacement. We take it with us and leave the property clean and tidy.
What Our Dublin Customers Say
Many thanks to all who provide feedback, we really appreciate it.
About Combi Boilers
Understanding the Basics of a Combi Boiler
Understanding Combi Boilers
A combi boiler, short for combination boiler is a central heating solution that integrates the roles of a water heater and a heating boiler. Its space saving design is favored in homes with constraints. Unlike traditional setups combi boilers eliminate the need for a separate hot water storage tank offering efficiency and ease of use.
How Combi Boilers Work
When you turn on a tap combi boilers heat water directly from the mains. This means you only heat the water you need. It’s more energy efficient than systems with hot water tanks because there’s no heat loss. Combi boilers are super convenient as they provide hot water whenever you need it as long as the incoming water pressure is good.
Benefits of Using a Combi Boiler
Compact Design Combi boilers are space efficient and eliminate the need for a separate hot water tank allowing for more room in your living space.
Efficiency In Heating: Combi boilers heat water only when needed eliminating the need for storage and minimizing energy usage.
Budget Friendly This setup is straightforward making it more affordable to install and typically cheaper to run, in the long run.
Instant Hot Water: Enjoy access to water whenever you want without having to wait for a tank to warm up.
Ideal Logic Gas Boilers
Things To Consider When Purchasing A New Gas Boiler
We are based in Swords And Rush, North County Dublin. But we provide services to all Dublin areas and surrounding counties of Wicklow, Kildare, Louth and Meath
Our Emergency Plumber and Heating Services are 24 Hour Services 7 Days a Week.
Yes, All our Plumbers are RGI Certified.