Gas and heating

Oil boiler service and repair

Servicing, repairing or replacing an oil-fired boiler and its burner. Oil work is not restricted the way gas is.

Post a task Oil boiler service and repair by county

Whether this needs a licence in Ireland

Ireland

No licence required

Taken from the statute below; not yet reviewed by a lawyer

Irelandwww.cru.ieChecked 14/10/2026

Oil boiler service and repair: what the job involves

Servicing, repairing or replacing an oil-fired boiler and burner, including the oil supply, filters and tank checks. Oil work has no statutory register in Ireland the way gas does, so experience, references and a combustion printout are what to check.

Also asked for as: oil burner service · boiler lockout · outdoor oil boiler · oil boiler repair · oil boiler replacement

How the job is usually done

Ask about faults, lockouts, smells or soot, and check the oil level and tank.
Run the boiler and take a combustion reading before stripping down.
Clean the combustion chamber, baffles and heat exchanger, and replace the nozzle and oil filters.
Check the burner, electrodes, photocell, pump pressure and flue.
Reassemble, recommission and take a final combustion analysis printout.
Check the tank, fire valve and pipe for leaks and advise on anything that needs work.

Oil boiler service and repair: what is included

Usually included

Cleaning and inspection of boiler and burner
New nozzle and filter at a service
Combustion analysis with a printout

Usually not included — agree it separately

Major parts such as a burner motor, pump or control box
Replacing the oil tank or bunding
Clearing a tank of water or sludge

Materials and who supplies them

Nozzle, filters and seals, supplied by the technician
Major parts and replacement boiler, quoted separately

How long it takes

A service takes about an hour, a little more for an outdoor boiler; a repair depends on the part, and a replacement usually takes one to two days.

When to book

Service the boiler in summer, and order oil before winter prices and delivery waits rise.

Oil boiler service and repair: the rules in Ireland

What the official sources say, checked against them on the date shown. A summary, not legal advice — follow the link to read the rule itself.

An oil or gas boiler installed as a replacement in an existing home should reach a minimum seasonal efficiency of 90% where practicable, which in practice means a condensing boiler.
Applies to: the installer and the homeowner
Building Regulations Part L, Technical Guidance Document L (Dwellings) · gov.ie · Checked 9 October 2026
Oil storage tanks and the flue of an oil appliance must meet Part J of the Building Regulations, which sets out separation distances from buildings and boundaries and when a fire-resistant barrier or bund is needed.
Applies to: the installer and homeowner
Building Regulations Part J, Technical Guidance Document J · gov.ie · Checked 9 October 2026
A landlord must keep gas, oil and electrical installations and heating appliances in good repair and safe working order, and provide a carbon monoxide alarm where required.
Applies to: the landlord
Housing (Standards for Rented Houses) Regulations · gov.ie · Checked 9 October 2026

Grants

SEAI heat pump system grant, with boiler removal
Up to €14,500 for a house (€11,500 for an apartment): up to €10,500 for the heat pump, up to €2,000 for radiator or underfloor upgrades and €2,000 for removing an oil or gas boiler, storage heaters or a solid fuel system. SEAI announced the removal element on 29 September 2026, subject to final implementation arrangements.
Who qualifies: Homes built and occupied before 2021. Homes built before 2007 need a technical assessment first unless a valid BER shows a heat loss indicator of 2.3 W/K·m² or less. Approval must be in place before any work starts.
seai.ie · Checked 9 October 2026
SEAI heating controls grant
A grant of €700 towards upgrading heating controls, with or without a new boiler. SEAI does not grant-aid fossil fuel boilers themselves.
Who qualifies: Homeowners, including private landlords, whose homes were built and occupied before 2011, using an SEAI registered contractor with approval before work starts. Not available where a heat pump grant has been or is being claimed.
seai.ie · Checked 9 October 2026
SEAI fully funded energy upgrades (Warmer Homes Scheme)
Free energy upgrades, which can include heating system work, for qualifying homeowners.
Who qualifies: Homeowners who own and live in a home built before 2006 and receive a qualifying social welfare payment such as Fuel Allowance, subject to a survey finding the home suitable.
citizensinformation.ie · Checked 9 October 2026

What oil boiler service and repair costs, and why

What jobs on Talqero came to

Not enough comparable jobs yet to publish a range here. Talqero shows a price range only once at least five comparable jobs, agreed prices or offers exist — a range from fewer would describe a handful of jobs, not the market. Post your job and compare the offers you get.

What affects the price

Service, repair or full replacement
Indoor, utility or outdoor boiler
Parts needed and their availability
Tank condition and fire valve or filter work
Winter call-outs and weekends
VAT: work on a home is charged at the reduced 13.5% rate by a VAT-registered business, unless materials exceed two-thirds of the price; ask whether the quote includes it
VAT: building work on a home is charged at the reduced rate of 13.5% by a VAT-registered business — unless the materials come to more than two-thirds of the price, when Revenue’s two-thirds rule applies the goods rate to the whole job. Ask whether a quote includes VAT.

Paperwork to ask for at the end

Combustion analysis printout
Service record with parts replaced
For a new boiler: warranty registration and commissioning sheet

Safety

A strong smell of oil or soot around the boiler means stop using it and call a technician.
Leaking tanks pollute ground and water; report any oil spill to your local authority.
Keep a carbon monoxide alarm near the boiler and in sleeping areas.

Oil boiler service and repair: before you hire

Questions to ask a tradesperson

Do you work on my make of boiler and burner?
Will I get a combustion analysis printout?
Does the service include a new nozzle and filters?
Would a heat pump work here with SEAI’s grant?

What you can do yourself

Checking the oil level and pressing the reset once on a lockout is fine; repeated resets can flood the chamber and need a technician.

What to put in your task

What do you need?
Where is the boiler?
Anything wrong at the moment?
How old is the boiler?

Photos that help

The boiler and burner label
The oil tank and the filter on its outlet
The flue outside

Oil boiler service and repair by county

Choose your county for oil boiler service and repair close to home.

Gas and heating

Need oil boiler service and repair? Describe the job.

Post it once, free. Professionals near you reply with their own price and when they could start. You choose, and pay them directly.

Post a task

Questions about oil boiler service and repair

Does oil boiler service and repair need a licence in Ireland?

No licence is required for this work in Ireland (source: www.cru.ie). Ask instead for references and photographs of similar jobs.

Does an oil boiler need a registered installer?

There is no statutory register for oil boiler technicians in Ireland, unlike gas. Some technicians hold voluntary registrations; ask about experience with your make and for a combustion printout.

Is there a grant for a new oil boiler?

No. SEAI does not grant-aid oil boilers. Its heat pump grant includes support for removing an oil boiler, and the heating controls grant can apply on its own.

Why does my boiler keep locking out?

Common causes are a blocked filter or nozzle, water in the oil, a failing photocell or low oil. A technician can find which with a quick test.

Often booked with oil boiler service and repair

Heating engineers