Like-for-like
€2,200–€3,300
Incl. VAT
GB Gas Services, 19 Oct 2026. A new boiler of the same type in the same spot.
Boiler replacement · Dublin
Boiler replacement in Dublin
A like-for-like gas boiler costs €2,200–€3,300 fully installed in Dublin, with VAT, on GB Gas Services' published prices, and no grant pays for it. Tell us about yours in 4 taps and one gas installer who covers your area rings you with a fixed price.
- Free quote, no obligation
- One installer rings you, not a list
- VAT status shown on every price
€2,200–€3,300like-for-like, incl. VAT
€2,500–€4,500New combi, incl. VAT
€2,600–€4,900System + cylinder, incl. VAT
Boiler Replacement Dublin
One installer, one fixed price
Boiler Replacement Dublin passes boiler replacement requests to one gas installer who covers your area. You tell us about the boiler and the house, they ring you, usually look at it, and give you a fixed price.
An older gas boiler turns 55% to 75% of its gas into heat for the house; a condensing boiler 85% to 97% (SEAI Domestic Fuels comparison, 1 July 2026). If yours is already condensing, a new one saves little on fuel: replace it for reliability, parts or warranty.
The boiler is only part of the price. The flue, the flush, moving anything and taking out a cylinder are what separate two quotes for the same boiler.
Before you agree a price, ask: is VAT included, and are the flue, the flush, the filter and the certificate in it?
Prices
What a new boiler costs, installed
Dublin installers' own published prices, re-read 29 October 2026, each with its date and VAT status.
New combi
€2,500–€4,500
Incl. VAT
GB Gas Services, 19 Oct 2026.
System + cylinder
€2,600–€4,900
Incl. VAT
GB Gas Services, 19 Oct 2026.
Switch to a combi
€3,100–€3,850
VAT not stated
Dublin Plumbing & Gas, 14 Sep 2026. The cylinder and attic tank come out.
Oil boiler
€3,000–€4,200
Incl. VAT
DeWAR Gas & Oil Service, ten packages, read 29 October 2026.
Lowest listed
from €1,895
VAT not stated
Borough Gas, Ideal Logic System 15kW, supplied and fitted.
Across 19 Dublin installers' published packages, the middle starting price was €2,499 (checked 22–23 October 2026). Every published price, side by side.
How it works
From an old boiler to a fitted one
- Tell us about the boilerFour taps: the boiler you have, the size of the home, when, and your number.
- One installer rings youOne gas installer who covers your area. They ask about the house, the boiler and the flue, and usually want to see it.
- A fixed priceAsk whether VAT is in it, and whether the flue, flush, filter and certificate are. Nothing is booked until you say yes.
- Fitted, with a certificateFor gas, the RGI gives you a CERT 2 completion certificate straight after the job.
Listing an installer's prices on this site doesn't mean it's the installer we pass your request to.
Grants
No grant for gas-to-gas
Citizens Information: "The Better Energy Homes Scheme does not cover replacing a gas or oil boiler with a new gas or oil boiler." (Citizens Information, page edited 22 October 2026). This site isn't SEAI and doesn't decide or pay any grant.
- New gas or oil boiler: no grant
- Heating controls: €700
- Heat pump, house: up to €14,500
- Approval before any work
Before you sign
Six things to know
No grant for gas-to-gas
Citizens Information: "The Better Energy Homes Scheme does not cover replacing a gas or oil boiler with a new gas or oil boiler." (Citizens Information, page edited 22 October 2026). Be wary of any offer that calls a new gas boiler grant-aided.
€700 for the controls
SEAI pays €700 towards heating controls on an existing system in a home built and occupied before 2011, approved before any work starts (SEAI).
Up to €14,500 to leave gas
A house that scraps its gas or oil boiler for a heat pump can get up to €14,500, including €2,000 for the scrappage, since 6 October 2026 (Citizens Information).
Only an RGI can fit it
By law, gas work in Ireland must be done by a Registered Gas Installer (CRU). Check anyone on rgi.ie. Oil boilers need an OFTEC-registered technician.
Condensing is the rule
The Building Regulations ask that a replacement boiler reaches 90% seasonal efficiency where practicable, which in practice means a condensing boiler (TGD L).
Ask for the CERT 2
For a boiler replacement on an existing gas supply, the RGI gives you a CERT 2 completion certificate, the original white copy, straight after the job (rgi.ie). Keep it with the warranty.
Guides
Every replacement guide
- Boiler replacement costEvery published Dublin price, dated, with VAT status.
- Combi boiler replacementA new combi: €2,500–€4,500 incl. VAT.
- Oil boiler replacementInstalled oil packages €3,000–€4,200 incl. VAT.
- Back boiler replacement40–50% efficient on SEAI's figures. What replacing it involves.
- Boiler replacement by Dublin area11 areas, from Tallaght to Balbriggan: local prices and the Census.
- Boiler grantsNo grant for gas-to-gas. What is funded.
- Repair or replace?A simple way to decide.
- Gas boiler or heat pump?Grants up to €14,500, and how to choose.
- Are gas boilers being banned?No, not in existing homes. The rules, with sources.
FAQ
Boiler replacement questions
How much does a boiler replacement cost in Dublin?
A like-for-like gas boiler replacement in Dublin typically costs €2,200–€3,300 fully installed with VAT, a new combi €2,500–€4,500 and a system boiler with a cylinder €2,600–€4,900 (GB Gas Services, 19 October 2026). Dublin installers' lowest published packages start from about €1,850.
Is there a grant for a new gas boiler?
No. The Better Energy Homes Scheme does not cover replacing a gas or oil boiler with a new gas or oil boiler. That's from Citizens Information (page edited 22 October 2026). The €700 SEAI heating controls grant may apply if the home was built and occupied before 2011. The bigger grants are for heat pumps: up to €14,500 for a house, including €2,000 for scrapping the old boiler.
Should I repair or replace my boiler?
Repair a younger boiler with a one-off fault. Replace one that's old, breaking down often, or facing a big repair. See repair or replace.
Are gas boilers being banned in Ireland?
No. There is no ban on replacing a gas boiler in an existing Irish home: a Registered Gas Installer can still fit a new condensing gas boiler. What has changed is that new homes have effectively stopped getting fossil fuel boilers since the 2019 Building Regulations, no public body can grant-aid a new gas or oil boiler since 1 January 2025, and the EU aims to phase out fossil fuel boilers by 2040. See the gas boiler rules.
Who fits the new boiler?
By law, nobody but a Registered Gas Installer (RGI) can do gas work in your home. Check the installer's name on rgi.ie. Oil boilers are fitted by OFTEC-registered technicians.
Who will ring me?
We pass your request to one gas installer who covers your area. Your number isn't sent to a list. They ring you, ask about the house and the boiler, and give you a price. Nothing is booked until you say yes. By law, gas work must be done by a Registered Gas Installer, so check their name on rgi.ie.
Is this site an installer?
No. It's an introduction service. We don't do gas work. We pass your request to one gas installer who covers your area.
Free quote
Get a boiler price in 4 quick taps
Tell us about the boiler and the house. It goes to one gas installer who covers your area, and they ring you with a fixed price.
Where these numbers come from (7 public sources, checked 29 October 2026)
- SEAI Domestic Fuels comparison, 1 July 2026: seai.ie/publications/Domestic-Fuel-Cost-Comparison.pdf
- Citizens Information: citizensinformation.ie/en/housing/housing-grants-and-schemes/grants-…
- SEAI: seai.ie/grants/home-energy-grants/individual-grants/h…
- CRU: cru.ie/consumer-information/home-safety/gas-works
- rgi.ie/registered-installers
- TGD L: assets.gov.ie/static/documents/technical-guidance-document-…
- rgi.ie/safety/declaration-of-conformance-certificate…