RGI-registered installers · Kilkenny
Boiler Installation in Kilkenny: RGI Installers for Gas, LPG and Oil Homes
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.
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 Gas Safety (Installation and Use) Regulations. An unregistered installer cannot certify the work, your home insurance may be invalidated, and the job cannot be included in 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.
How Long Does Boiler Installation Take 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 Homeowners in 2026
Up to €6,500 for heat pump installation and €1,200 for solar water heating, through SEAI-registered contractors.
Local coverage
Boiler Installation Across Kilkenny: The Areas Covered
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.
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.
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. Supply and fit.
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.
System Boiler
Works with a hot water cylinder. Better for larger homes with multiple bathrooms and high hot water demand. Suitable for solar water heating.
2026 prices
Boiler Installation Cost in Kilkenny 2026: Prices From Kilkenny City to Graiguenamanagh
Typical like-for-like Kilkenny ranges. All figures include labour and VAT at 9%.
Combi boiler
€2,200–€3,200
Supply and fit, like-for-like replacement
System boiler
€2,800–€4,000
Supply and fit, includes cylinder if needed
Oil boiler
€3,000–€4,500
Supply and fit, tank inspection may be extra
Fit only
€600–€900
Labour only, customer supplies the boiler
Annual service
€80–€120
Recommended every 12 months
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.
SEAI grants
SEAI Grants for Kilkenny Heating Upgrades
Grants are available for heat pump installation (up to €6,500) and solar water heating (€1,200). Standard gas combi replacements do not qualify directly, and work must be carried out by an SEAI-registered contractor before any grant can be 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 plumbers →Hiring
How to Find a Registered Boiler Installer in Kilkenny
Every gas boiler installer in Kilkenny must be registered with the RGII. Here is how to verify and hire correctly.
Browse Registered Gas Installers in Kilkenny
Every engineer listed in the Kilkenny gas installer directory is RGII-registered. Browse the county, find engineers near you, and contact them directly. You can verify any registration number at rgii.ie for additional peace of mind.
Get Three Written Quotes for the Work
Quotes should specify the boiler model, labour cost, flue materials and any pipework changes required. A quote without a named boiler model is incomplete, since the specification affects warranty terms, SEAI grant eligibility and long-term running costs.
Confirm SEAI Registration if Claiming a Grant
RGII and SEAI are two separate registers. RGII 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 on Completion
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 your property’s resale.
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 at 9%.
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 cannot be included in 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 (€6,500) 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 home in Kilkenny 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 rgii.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.