Heating · Cork
Heating systems installed, serviced and repaired across Cork.
Gas boilers, oil boilers, heat pumps, radiators and controls — serviced, repaired, upgraded and replaced across Cork City and the surrounding area. Christy is responsible for every job, from the first call to final commissioning.
We work on gas and oil equally. Many homes around Cork outside the gas network are still on oil.
Fixed price, agreed firstYou get the price in writing before any work starts — no surprises on the invoice.
In short
C. Kenneally services, repairs, upgrades and replaces gas boilers, oil boilers and heat pumps across Cork City and the surrounding area. Gas boiler service from €120, oil from €150, call-out and first hour from €95, all including VAT, with a fixed price agreed in writing before any work starts.
Updated 18 October 2026 · C. Kenneally Heating & Plumbing
In this section
Heating services
Boiler servicing
Annual gas and oil boiler services, with the flue gas reading and the safety checks written down.
Boiler repairs & breakdowns
No heat, no hot water, fault codes, pressure loss, noisy boilers — diagnosed and fixed.
Boiler replacement
A-rated gas and oil boilers sized for the house, fitted, commissioned and registered for warranty.
Heat pumps
Air-to-water heat pumps, designed for the house, with help on the SEAI grant paperwork.
Heating upgrades & controls
Zoning, smart thermostats, radiator upgrades and power flushing.
Underfloor heating
Wet underfloor systems repaired, balanced and designed in with heat pumps.
Brands we supply and fit
Worcester Bosch, Vaillant, Baxi, Ideal, Vokera, Firebird, Grant, Panasonic and more.
SEAI grants
Which grants apply to heating work, how much, and what has to happen first.
Start here
Find the service by symptom
Pick the closest one. You do not need to know the part name.
Gas heating
Homes on the Cork gas network run combi, system or regular boilers. We service, repair and replace all three, and all gas work is carried out under Christy's Registered Gas Installer registration and signed off by him, with installations certified by a Declaration of Conformance.
Oil heating
Outside the gas network, many homes around Cork still heat with oil. We service oil boilers each year — nozzle, filter, combustion test — repair them, and replace them like-for-like or move the house onto a heat pump when the numbers make sense.
Underfloor heating
Underfloor heating suits heat pumps well because it runs at a lower water temperature. We balance and repair existing wet underfloor systems and include it in heat pump designs where the floor allows. See Underfloor Heating.
Why it matters
The boiler is only half the system.
A new boiler on a system full of sludge, with no proper controls, will still leave cold rooms and high running costs. We look at the pipework, the radiators and the controls as well, and give you honest advice on what is worth doing and what is not.
Advice centre
Boiler guides.
Baxi E133 fault code — what it means
E133 on a Baxi boiler means the boiler did not establish a flame — the gas supply was interrupted or the boiler could not light. Check the gas supply first, then the condensate pipe in cold weather. If both are fine, it needs a Registered Gas Installer.
C. Kenneally · Oct 2026Combi, system or regular boiler — which do I need?
It depends on how much hot water you use at once. A combi heats water on demand and suits one bathroom. A system boiler with a cylinder suits two or more bathrooms in use together. A regular boiler with attic tanks is common in older houses and is usually replaced like-for-like unless there is a reason to change.
C. Kenneally · Oct 2026How long does a boiler last?
Usually around 10 to 15 years with annual servicing. Boilers that are never serviced, or that run on a sludged system without a filter, often fail sooner.
C. Kenneally · Oct 2026How much does a new boiler cost in Cork? (2026 price guide)
A straight like-for-like gas combi swap starts at €2,750 including VAT, fitted and certified. An oil boiler starts at €3,200. Changing boiler type, moving the boiler or a new flue route adds to that — which is why the fixed price comes after a survey or photos.
C. Kenneally · Oct 2026How often should a boiler be serviced?
Once a year. Gas Networks Ireland recommends gas appliances are serviced annually in line with the manufacturer's instructions, and most boiler warranties depend on it. Oil boilers are serviced annually as standard practice.
C. Kenneally · Oct 2026Ideal boiler F1 and L2 fault codes
On Ideal Logic boilers, F1 means the system water pressure is too low — usually below about 0.5 bar — and L2 means the boiler tried to light, failed, and locked out. F1 you can often fix yourself by re-pressurising. L2 is an ignition lockout, usually caused by a gas supply problem, a frozen condensate pipe or the ignition parts.
C. Kenneally · Oct 2026Replacing an oil boiler: how to plan it
Plan it before the old boiler fails, ideally outside the winter rush. Check the tank, oil lines and flue at the same time, and price a heat pump alongside — with the SEAI grant and the new €2,000 boiler scrappage support, it can work out closer than you expect.
C. Kenneally · Oct 2026Should I repair or replace my boiler?
Repair it if it is reasonably young, the faulty part is easy to get, and it has been reliable. Replace it when breakdowns are becoming regular, parts are hard to get, or one repair would cost a large share of a new boiler.
C. Kenneally · Oct 2026Vaillant (and Glow-worm) F28 and F29 fault codes
On Vaillant boilers — and many Glow-worm models, which share parts — F28 means the boiler failed to light at start-up, and F29 means the flame was lost while it was running. Both usually point to the gas supply, a frozen condensate pipe, or the ignition and flame-sensing parts.
C. Kenneally · Oct 2026What should I do if my condensate pipe freezes?
Find the plastic condensate pipe running from the boiler to an outside drain, pour warm — not boiling — water along it until the ice clears, then reset the boiler.
C. Kenneally · Oct 2026Why does my boiler keep losing pressure?
Because water is leaving the sealed system. The usual causes are a small leak on a radiator valve or joint, a pressure relief valve letting by, or an expansion vessel that has lost its charge.
C. Kenneally · Oct 2026Worcester Bosch EA or EA 227 fault code — what it means
EA, shown as EA 227 on newer Worcester Bosch boilers, means the boiler tried to light and did not see a flame. It locks out for safety. The commonest causes are no gas getting to the boiler, a frozen condensate pipe in cold weather, or a worn ignition or flame-sensing electrode.
C. Kenneally · Oct 2026Questions
Frequently asked questions
Do you work on both gas and oil?
Yes. Gas, oil and heat pumps. If you are on oil and wondering about a heat pump, we can price both so you can compare.
Which boiler brands do you fit?
We supply, fit, service and repair all the common gas, oil and heat pump brands, register the manufacturer warranty for you, and recommend the right one for your house. See Boiler Brands.
Is there a discount for older customers?
Yes — 10% off servicing and repair labour for customers aged 66 and over. Just mention it when you book.
Do you cover my area?
We cover Cork City and everywhere within about 15 miles of Togher, from Blarney to Kinsale and Ballincollig to Midleton. See Areas We Cover, or just ask.
Book a service or request a quote.
Book a service or ask for a price online, and attach a photo of the boiler, the leak or the job. Christy replies with a fixed price or a time to call, and nothing starts until you have agreed it.
RGI registered · OFTEC registered · SEAI registered · Public liability insured · Cork City & surrounding area