RGI-registered installers · Kilkenny
Boiler Installation in Kilkenny: Gas, LPG and Oil
Find a registered installer for combi boiler installation, system boiler replacement or an oil boiler swap across Kilkenny. 2026 prices, SEAI grant guidance and RGI-registered installers from Kilkenny City to Graiguenamanagh.
Boiler installation in Kilkenny
Kilkenny city and county has a compact gas installer market centred primarily around Kilkenny city, where the natural gas network provides good coverage. The wider county is predominantly rural with oil and LPG heating common across smaller towns and farming areas. Kilkenny city's historic building stock, including period terraces and older commercial premises, provides consistent demand for boiler replacement and gas appliance work.
Kilkenny City has a concentration of heritage buildings and older stone structures, many of which have been converted into homes and apartments. Working in these properties often requires sensitive approaches to pipe routing and system design to avoid damage to historic fabric. The rural county is predominantly farming country with older farmhouses, many of which have oil systems due for replacement.
The law
Boiler Installation in Kilkenny: What the Law Requires
Boiler installation in Kilkenny 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 Kilkenny city, Callan, Thomastown, Castlecomer, Graiguenamanagh and Urlingford. 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 Kilkenny
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 Kilkenny Homes
Up to €12,500 for heat pump installation and €1,200 for solar water heating, through SEAI-registered contractors.
The options
Choosing Between Gas, LPG and Oil in Kilkenny
Kilkenny city has solid natural gas network coverage, while the rural county including towns like Callan, Thomastown and Castlecomer relies mainly on oil and LPG.
Combi Boiler
Heats water on demand with no cylinder needed. Ideal for homes under 130 sq m and popular in Kilkenny City and the larger towns on the gas network.
from€2,200
Oil Boiler
A mainstay outside the gas-connected towns of Kilkenny. Modern condensing oil boilers are over 90% efficient. SEAI grants apply when replacing with a heat pump.
from€3,000
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
2026 prices
Boiler Installation Cost in Kilkenny 2026
Typical like-for-like ranges across Kilkenny. 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
Kilkenny draws water from the River Nore and has moderately hard water. The city centre properties on the older pipe network occasionally experience pressure issues in upper floors, and older lead service pipes are still found in pre-1970s buildings.
- 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 Kilkenny 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 Kilkenny are listed at wallinsulationireland.ie.
See SEAI-registered plumbersHiring
How to Hire a Boiler Installer in Kilkenny
Every gas boiler installer in Kilkenny must hold RGI registration. Here is how to verify and hire correctly.
Browse Registered Gas Installers in Kilkenny
Every engineer in the Kilkenny 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 Kilkenny: Areas Covered
Kilkenny is inland and exposed, with some of the more notable frost periods in the south-east. The Nore Valley can hold cold air on still winter nights, making it one of the colder parts of Leinster outside the mountains.
Kilkenny City has a well-established plumbing trade with several long-running businesses. Thomastown, Callan and the south of the county are served by local contractors with good response times. Castlecomer and north Kilkenny have coverage but specialist or emergency work may draw from Kilkenny City.
Every area above is served by registered engineers in the Kilkenny gas installer directory.
Common questions
Boiler Installation in Kilkenny: Common Questions
How much does boiler installation cost in Kilkenny in 2026?
A combi boiler supply and fit costs €2,200 to €3,200 in Kilkenny 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 Kilkenny?
Yes. All gas and LPG boiler installation in Kilkenny 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 Kilkenny?
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 Kilkenny?
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. Kilkenny homeowners in homes built before 2011 are eligible to apply.
Can I get a gas boiler if my Kilkenny home is not on the gas network?
Yes, in most cases. Homes in Kilkenny outside the natural gas network can run a combi or system boiler on LPG supplied from a tank, and the same RGI registration rules apply to LPG work as to natural gas. Your installer will size the tank and pipework to the property.
How do I find a registered boiler installer in Kilkenny?
Browse RGI-registered gas installers across Kilkenny 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 Kilkenny
Boiler installation in Kilkenny, from combi swaps to oil replacements and heat pumps, matched to RGI-registered installers near you. Free, no obligation, reply within 24 hours.
Browse Kilkenny gas installers