RGI-registered installers · Dublin
Boiler Installation in Dublin: RGI-Registered Installers
Find a registered gas installer for combi boiler installation, system boiler replacement or a heat pump across Dublin. 2026 prices, SEAI grant guidance and RGI-registered installers from Dublin City to Finglas.
Boiler installation in Dublin
Dublin has the highest density of RGI registered gas installers in Ireland, reflecting the city's extensive natural gas network and high population. The Gas Networks Ireland infrastructure covers all Dublin postcodes and extends into surrounding suburbs, meaning the vast majority of homes and businesses in the county can access natural gas. With housing stock ranging from Victorian terraces to modern apartments and large commercial estates, gas installers in Dublin carry out a wide variety of work across all property types.
Dublin's housing mix of Victorian terraces, 1960s semis and modern apartments means plumbing systems vary enormously from one street to the next. Pre-1970s homes often have original copper pipework that corrodes at joints, while newer estates have plastic pushfit systems that occasionally develop pressure problems.
The law
Boiler Installation in Dublin: What the Law Requires
Boiler installation in Dublin must be carried out by an RGI-registered gas installer for any boiler running on natural gas or LPG, a legal requirement under the Energy (Miscellaneous Provisions) Act 2006. An unregistered installer cannot certify the work, your home insurance may be invalidated, and the job may not be accepted towards a BER certificate.
The installers listed here cover the whole county, taking in Dublin city centre, Finglas, Clontarf, Rathfarnham, Tallaght, Blanchardstown, Swords, Malahide, Dún Laoghaire and Bray. Every one is drawn from the RGI public register.
- RGI registration is a legal requirement for all gas and LPG work
- Every installer here is drawn from the RGI public register
- A gas safety certificate is issued to you on completion
How Long It Takes in Dublin
A like-for-like combi swap takes one working day. Switching boiler type takes two days, while heat pumps take two to three.
SEAI Grants for Dublin Homes
Up to €12,500 for heat pump installation and €1,200 for solar water heating, through SEAI-registered contractors.
The options
Which Boiler Suits Your Dublin Home?
Natural gas is the dominant fuel source across Dublin, with very high connection rates in all postcodes from Dublin 1 through Dublin 24 and across Fingal, South Dublin and Dún Laoghaire–Rathdown.
Combi Boiler
Heats water on demand with no cylinder needed. Ideal for homes under 130 sq m and the most popular choice for houses and apartments around Dublin City.
from€2,200
System Boiler
Works with a hot water cylinder. Better for larger homes with multiple bathrooms and high hot water demand, and suits solar water heating.
from€2,800
Oil Boiler
For homes off the gas network on the rural fringes of Dublin. Modern condensing oil boilers are over 90% efficient. SEAI grants apply when replacing with a heat pump.
from€3,000
2026 prices
Boiler Installation Cost in Dublin 2026
Typical like-for-like ranges across Dublin. All figures include labour and VAT.
- Switching boiler type adds €400 to €800 for pipework changes
- A named boiler model on the quote protects your warranty
- An annual service keeps the manufacturer guarantee valid
Dublin has notably hard water, with limescale building up in boilers, shower heads and radiators faster than in most Irish counties. Regular boiler servicing and scale inhibitors are recommended for homes connected to the Dublin municipal supply.
- Combi boiler €2,200–3,200
- System boiler €2,800–4,000
- Oil boiler €3,000–4,500
- Fit only (labour) €600–900
- Annual service €80–120
Indicative 2026 ranges. Always confirm with a written quote before work begins.
SEAI grants
SEAI Grants for Dublin Heating Upgrades
Grants are available for heat pump installation (up to €12,500) and solar water heating (€1,200). Standard gas combi replacements do not qualify directly, and the work must be carried out by an SEAI-registered contractor before any grant is claimed.
A fabric-first upgrade makes the biggest difference to running costs, and SEAI-registered insulation contractors covering Dublin are listed at wallinsulationireland.ie.
See SEAI-registered plumbersHiring
How to Hire a Boiler Installer in Dublin
Every gas boiler installer in Dublin must hold RGI registration. Here is how to verify and hire correctly.
Browse Registered Gas Installers in Dublin
Every engineer in the Dublin gas installer directory is RGI-registered, drawn from the public register. Browse the county, find installers near you and contact them directly. You can verify any registration number at rgi.ie for extra peace of mind.
Get Three Written Quotes for the Work
Quotes should specify the boiler model, labour cost, flue materials and any pipework changes. A quote without a named boiler model is incomplete, as the specification affects warranty terms, SEAI grant eligibility and long-term running costs.
Confirm SEAI Registration if Claiming a Grant
RGI and SEAI are two separate registers. RGI registration is mandatory for all gas work in Ireland, while SEAI registration is required only for grant-eligible jobs. Your installer must be on both lists before any SEAI-funded work begins.
Request Your Gas Safety Certificate
Your installer must provide a gas safety certificate on the day the work is completed. Keep it with your home insurance documents and BER certificate, because without it the gas work is unverifiable and will affect a future sale.
Local coverage
Boiler Installation Across Dublin: Areas Covered
Dublin winters are milder than inland counties but sudden cold snaps still catch exposed pipes in unheated attics and north-facing external walls. The coastal areas of south Dublin experience higher wind exposure that can affect flue installations.
Dublin accounts for the highest volume of plumbing work in Ireland by far. Emergency call-out times can be longer in rush-hour traffic conditions, so it's worth having a regular plumber relationship rather than searching in a crisis.
Every area above is served by registered engineers in the Dublin gas installer directory.
Common questions
Boiler Installation in Dublin: Common Questions
How much does boiler installation cost in Dublin in 2026?
A combi boiler supply and fit costs €2,200 to €3,200 in Dublin for a like-for-like replacement. A system boiler is €2,800 to €4,000, and an oil boiler €3,000 to €4,500. Switching boiler type adds €400 to €800 for pipework changes. Figures include labour and VAT.
Do I need an RGI-registered installer in Dublin?
Yes. All gas and LPG boiler installation in Dublin requires an RGI-registered gas installer by law. An unregistered installer cannot certify the work, your home insurance may be invalidated, and the installation may not be accepted towards a BER certificate.
How long does a boiler installation take in Dublin?
A like-for-like combi boiler replacement takes one working day. Switching boiler type takes two days and requires additional pipework. Heat pump installations take two to three days.
Is there an SEAI grant for a new boiler in Dublin?
A standard gas boiler swap does not qualify for a direct SEAI grant. Grants apply to heat pump installation (up to €12,500) and to insulation upgrades carried out at the same time. Dublin homeowners in homes built before 2011 are eligible to apply.
Which boiler is best for a Dublin home?
A combi boiler suits most Dublin houses and apartments under 130 square metres, with no cylinder needed. Larger homes with several bathrooms are better served by a system boiler. Your RGI installer sizes the boiler to the property.
How do I find a registered boiler installer in Dublin?
Browse RGI-registered gas installers across Dublin on plumbersinireland.ie, drawn from the RGI public register, then request quotes directly. Always confirm current registration at rgi.ie before work begins.
Get Boiler Installation Quotes in Dublin
Boiler installation in Dublin, from combi swaps to oil replacements and heat pumps, matched to RGI-registered installers near you. Free, no obligation, reply within 24 hours.
Browse Dublin gas installers