Boiler Installation in Cork
Looking for a plumber to install a new boiler in Cork? The directory below lists local plumbers and RGI registered gas installers in Co. Cork who carry out boiler installation and replacement. Gas boiler work in Ireland legally requires an RGI registered installer under the Gas (Interim) (Regulation) Act 2002. Browse the listings and contact them directly to get quotes.
Plumbers in Cork for boiler installation
Billy Daly Plumbing & Heating
Ballinlough
021 4295258
Hanover HPS
Glanmire
087 7570999
Trevor O'Mahony Heating & Plumbing
Dublin Hill
087 6338004
Aidan McGuckian
Midleton
087 9904126
Trevor Mc Guirk
Bantry
087 7177194
Ciaran Casey
Blackrock
086 1739851
All Gas LTD t/a Cork Gas Centre
Forge Hill
021 4963749
SR Complete Plumbing Solutions Ltd
Mallow
085 1694244
Tadgh Kiely Heating & Plumbing Services
Mallow
086 1613131
MC Gas Services
Carrigaline
0879004545
Michael O'Brien
Fermoy
087 2634286
Brian Condon Mechanical Ltd
Cork
086 8558155
P.J. Sheehan Heating & Plumbing
Youghal
087 9450004
Finbar Coakley & Sons
Cork
086 2457194
Matthew Ennis
Douglas
086 3902115
Kevin English
Cork
087 9964000
Diarmuid Sheehan
Cork
087 2383115
WP Plumbing Services
Clonakilty
086 0241064
Response Plumbing Ltd
Blarney
087-2335819
John Philpott
Ballyphehane
087 2574877
Showing 20 of 203 plumbers in Cork. See all 203 listings.
What boiler installation in Cork involves
Boiler installation in Cork covers the full process of removing an existing boiler and fitting a new gas, oil or heat pump unit. A qualified RGI registered gas installer must carry out all notifiable gas work under the Gas (Interim) (Regulation) Act 2002, which includes the connection and commissioning of any new gas boiler. This means checking for gas, registering the installation with Gas Networks Ireland and issuing a completion certificate. Most residential boiler installations in Co. Cork take between four and eight hours depending on whether pipework needs to be relocated or upgraded.
New boilers in Ireland are typically condensing combination boilers for properties with mains gas, or oil-fired condensing boilers for areas outside the gas network. Heat pump installations are becoming more common in Cork following SEAI grant support of up to €10,500 for air-to-water systems. Any boiler replacement in a home built before 2006 should include a system flush to remove sludge and debris before the new unit is connected, protecting the warranty and improving efficiency from day one.
How much does boiler installation cost in Cork?
| Job type | Typical cost in Cork |
|---|---|
| Combi boiler replacement (supply and fit) | €1,800 to €2,800 |
| Oil boiler replacement (supply and fit) | €2,000 to €3,500 |
| Air-to-water heat pump installation | €8,000 to €15,000 |
| Annual boiler service | €80 to €140 |
| Power flush before new boiler | €250 to €450 |
| System upgrade (pipework, radiators) | €500 to €2,000 extra |
Boiler installation costs in Cork depend on the fuel type, boiler brand and whether additional work is required such as a power flush, system upgrade or flue relocation. Labour costs in Dublin and the greater Leinster area run €50 to €100 per day higher than rural counties. Supply-and-fit packages from local Cork engineers typically include the boiler, all fittings and RGI certification in a single quote.
SEAI grants significantly reduce the net cost of heat pump installations. As of 2026, the Better Energy Homes grant for an air-to-water heat pump is €10,500, and homes that also upgrade insulation may qualify for the One Stop Shop grant of up to €25,000. Ask any Cork gas installer you contact whether your home meets the qualifying criteria before committing to a heat pump over a like-for-like boiler replacement.
How boiler installation works in Cork: step by step
Survey and quote
A qualified gas installer visits your Cork property to assess the existing system, flue route, gas meter capacity and boiler location. They check the condition of the pipework and radiators and advise on whether a power flush is needed before the new boiler is connected. A written quote is provided covering supply, installation, all fittings and RGI certification.
System preparation and flush
Before the new boiler is installed, the existing system is flushed to remove sludge and magnetite that has built up over the years. Most boiler manufacturers in Ireland require evidence of a clean system for the warranty to be valid. A magnetic filter is typically fitted to the return pipe at this stage to protect the new boiler from future contamination.
Boiler removal and installation
The existing boiler is drained, disconnected from the gas supply and removed. The new boiler is positioned, all pipe connections are made, the flue is fitted and the gas connection is made by the RGI registered installer. This stage takes between three and six hours depending on access and the complexity of the pipework layout in your Cork property.
Commissioning and RGI certification
The completed installation is pressure tested, purged of air and fired for the first time. The engineer checks gas pressure, combustion readings and heat distribution to all radiators before signing off. A completion certificate is issued and the installation is notified to Gas Networks Ireland. You receive written documentation of the RGI certification, which is required for insurance and warranty purposes.
RGI registration and legal requirements for boiler installation in Cork
All gas boiler installations in Cork must be carried out by an RGI registered gas installer. The RGI scheme is administered by Gas Networks Ireland and is the only legally recognised certification for notifiable gas work in Ireland. Homeowners who allow unregistered persons to carry out gas work void their home insurance and may face prosecution under the Gas (Interim) (Regulation) Act 2002. You can verify any installer's RGI number at rgi.ie before booking.
Oil boiler installation in rural parts of Co. Cork is governed by the Building Control (Amendment) Regulations. Works on the heating system that alter the heat source may require a Commencement Notice depending on scope. Your installer will advise whether the project falls within exempted development. For heat pump installations, SEAI One Stop Shop providers handle all paperwork and grant applications as part of the service.
How to choose a boiler installation plumber in Cork
Verify RGI registration before booking
Any engineer carrying out gas boiler installation in Cork must be RGI registered. Ask for their RGI number before booking and verify it at rgi.ie. An unregistered person carrying out gas work is breaking the law regardless of experience or qualifications claimed. Your insurer will not cover incidents caused by unregistered gas work.
Get at least two itemised quotes
Boiler installation costs in Cork vary between engineers. Ask for itemised quotes that separate the cost of the boiler unit, labour, power flush and any system modifications. This makes comparison straightforward. Be wary of quotes that are significantly below market rate — these often exclude the boiler brand quality, RGI certification or post-installation commissioning.
Ask what warranty covers the installation
Most boiler manufacturers offer five to ten year parts warranties conditional on annual servicing. Ask your Cork engineer what warranty comes with the unit and whether the installation labour is also warranted. Some engineers offer a two-year labour warranty on top of the manufacturer's parts warranty, which protects you from call-out charges on any installation-related faults in the early years.
Check reviews and completed RGI notifications
Ask any Cork boiler installer for references from recent installations in the county. Google reviews from local customers are the most reliable indicator of quality. An engineer who consistently delivers on time, provides RGI documentation promptly and responds to post-installation queries will have reviews that reflect this. Avoid engineers with no reviewable history or those who cannot provide documentation of previous RGI-certified installations.
Boiler installation in Cork: frequently asked questions
Do I need planning permission for a new boiler in Cork?
In most cases, no. A like-for-like boiler replacement is generally exempted development in Cork and does not require planning permission. External works such as fitting a new oil tank in a visible location may have minor restrictions. Your installer will advise if any notification is required for your specific property.
How long does boiler installation take in Cork?
A standard combi boiler replacement in a Cork home takes between four and eight hours. More complex jobs such as converting from oil to gas or installing a heat pump with underfloor heating can take one to three days. Most RGI registered gas engineers in Cork complete a standard swap in a single working day.
What RGI certification should I receive after boiler installation in Cork?
After any gas boiler installation in Cork, your RGI installer must provide a completion certificate. This proves the installation was carried out by a registered professional and is essential for home insurance, future property sales and warranty claims. If you are not offered a certificate, ask for one before paying.
Is a heat pump better than a gas boiler in Cork?
Heat pumps are most cost-effective in well-insulated homes with underfloor heating or large radiators. If your Cork home has a BER rating of C or better and you qualify for the SEAI grant, a heat pump can pay back within 7 to 12 years. For older, poorly insulated properties, a high-efficiency condensing gas boiler is often the more practical short-term option.
What boiler brands do engineers in Cork typically install?
The most commonly fitted boiler brands in Ireland are Worcester Bosch, Viessmann, Vaillant, Baxi and Ideal. Local Cork engineers often have preferred suppliers and may offer better warranty terms on brands they stock regularly. Always ask what warranty covers both the unit and the installation labour before committing.
Can I get a grant towards boiler installation in Cork?
SEAI grants are available for heat pump installations, not for like-for-like gas or oil boiler replacements. If you are switching from oil to a heat pump in Co. Cork, the Better Energy Homes scheme covers up to €10,500 and the One Stop Shop scheme covers up to €25,000 for a full energy upgrade bundle. Ask your Cork installer about eligibility before deciding on a system.
Find a plumber in Cork
Browse the full directory of local plumbers in Co. Cork and contact them directly.