RGI Registered Gas Installer · Co. Cork
John O'Sullivan Appliance ServicesGas Installer in Co. Cork
John O'Sullivan Appliance Services is an RGI registered gas installer in Cork, certified for LPG work covering boiler installation, servicing, appliance connections and gas pipework across Co. Cork.
Who they are
About John O'Sullivan Appliance Services
John O'Sullivan Appliance Services is a registered gas installer based at Beara, Cork, listed on the public RGI register. RGI registration is the statutory requirement for gas work in Ireland under the Energy (Miscellaneous Provisions) Act 2006, which makes it an offence for anyone who is not a Registered Gas Installer to carry out designated gas works. Send an enquiry using the form on this page, or call directly, both are free to use.
John O'Sullivan Appliance Services is certified for both Natural Gas and LPG work in Cork, covering a wider range of properties than natural-gas-only installers. The registration number R3547 can be independently verified on the public register at rgi.ie at any time, and it is worth confirming the entry is current rather than expired before booking.
RGI registration R3547. Verify this number free on the public register at rgi.ie before any gas work begins.
Cork is Ireland's largest county and has a diverse mix of urban and rural gas demand. Cork city and its suburbs have strong natural gas grid coverage, while large parts of rural Cork — particularly in West Cork — rely on LPG or oil for heating. This means installers in Cork need to cover both gas grid work in the city and LPG installations across the wider county, making LPG certification particularly valuable for installers based outside the city.
Get in touch
Contact John O'Sullivan Appliance Services
Describe the gas job once and it goes straight to John O'Sullivan Appliance Services, free, with no sign-up and no middleman. Prefer to call? Use the number below.
Call 086 8234630RGI registered · Reg R3547 · Verify at rgi.ie
Send John O'Sullivan Appliance Services an enquiry
Describe the job once. It goes straight to them, free.
Free, no sign-up. Sent directly to John O'Sullivan Appliance Services.
What they cover
Gas Installation & Servicing
Cork city and commuter towns including Ballincollig, Carrigaline and Midleton are well served by the natural gas network, while rural West Cork and North Cork rely more heavily on LPG and oil heating.
As an RGI registered installer, John O'Sullivan Appliance Services is legally authorised to carry out all notifiable gas work in Co. Cork. The following jobs require a registered installer under Irish law:
- Gas boiler installation and like-for-like boiler replacement
- Gas boiler servicing, annual maintenance and fault diagnosis
- Gas cooker, hob and range connection and disconnection
- Gas fire and gas water heater installation
- Gas pipework extension, modification and pressure testing
- New gas connections to the Gas Networks Ireland supply
- Gas appliance repair and safety checks
- LPG tank connection, regulation and appliance fitting
On completion of any notifiable gas work a registered installer must issue a Declaration of Conformance, the completion certificate. It is what you produce for insurance, a property sale or a mortgage drawdown, so ask for it on the day rather than accepting that it will follow.
Off the gas grid
LPG Work in Cork
John O'Sullivan Appliance Services holds LPG certification alongside Natural Gas registration, which suits properties in Co. Cork that are not connected to the national gas grid. LPG is the common alternative across rural townlands, farms and older housing stock outside the main towns.
LPG requires separate certification from standard natural gas registration. If you are on an LPG supply and need a boiler installation, appliance connection or tank fitting, confirm the installer holds LPG certification as well as RGI registration before booking. Natural gas vs LPG explained.
On the ground
Local Coverage in Cork
Gas installers based in Co. Cork typically serve customers across the county, covering Cork city, Ballincollig, Carrigaline, Midleton, Mallow, Bandon, Cobh, Fermoy, Kinsale and Macroom. There are 188 RGI registered gas installers listed for Co. Cork on this site.
For a boiler replacement or any larger gas job, it is worth getting two or three written quotes before committing. Browse all 188 gas installers in Cork, or see boiler installation costs in Cork for current price ranges.
Worth checking
Before You Book in Cork
Before any gas work begins, there are a few things worth confirming regardless of which installer you use.
Verify the registration number
On rgi.ie. It takes under two minutes and confirms the installer is currently registered, not simply registered at some point in the past.
Get a written quote
That breaks down labour, parts and VAT separately. Gas boiler installation in Co. Cork typically runs €2,200 to €3,200 for a like-for-like combi replacement, and emergency call-outs €80 to €180 depending on the hour.
Confirm public liability insurance
And ask for the certificate before work begins.
Request the Declaration of Conformance
On completion. A registered installer is legally required to issue one for notifiable gas work.
If the job is an oil boiler rather than gas, note that oil sits outside the RGI scheme entirely, so ask about OFTEC oil-firing certification instead. More on what RGI registration covers.
Gas work carried out by an unregistered person is illegal in Ireland and voids most home insurance policies. If you smell gas, ring the Gas Networks Ireland emergency line on 1800 20 50 50 before calling anyone else.
More Gas Installers in Cork
Browse the full RGI register for Co. Cork, filter by area and gas type, and contact an installer directly.
See all gas installers in Cork