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Oil Boiler Servicing
OFTEC-trained technicians • Clean, efficient and reliable heat all winter.
Keep your oil boiler safe and efficient
What we do on every service
We strip, clean and re-commission your burner, replace the nozzle and oil filter, check flexible hoses and fire-valve operation, then optimise combustion so your boiler runs cleanly and efficiently. You’ll get a clear service report with all readings and any recommendations.
- OFTEC-trained technicians
- Nozzle & oil filter replacement as required
- Combustion analysis (CO₂, flue temp, smoke number)
- Burner head, baffles/turbulators & blast tube cleaned
- Flue seals, oil line & fire-valve safety checked
- Condensate trap (if condensing) cleaned & primed
Full oil service checklist
- Visual inspection of appliance, flue route and ventilation
- Isolation & safety checks; drip tray and floor protection
- Burner removed, cleaned and re-fitted with new nozzle
- Oil filter inspected/renewed; flexible lines & joints checked
- Electrode condition and gap checked/adjusted
- Pump pressure & air settings adjusted to spec
- Smoke test & flue gas analysis to optimise efficiency
- Heat exchanger/baffles cleaned; seals inspected
- System pressure/expansion vessel & safety valve checked
- Controls, thermostats & programmer function tested
- Service report with readings and recommendations
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Nozzle & filter renewal
Replace burner nozzle and oil filter, clean burner head and baffles, check hoses and seals for leaks
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Combustion test & tuning
Flue-gas analysis (CO₂, flue temp, smoke number) with air/fuel adjustment for a clean, efficient burn.
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Safety check & report
Flue and ventilation verified, fire-valve and controls tested, same-day digital report with all readings.
Oil Boilers
Common signs it’s time to book
- Boiler hard to start or locking out
- Visible smoke from flue or sooting around burner
- Rising oil use or radiators slow to heat
- Unusual smells or noises on start-up
What we’ll ask when you book
- Boiler make/model and last service date (if known)
- Oil level in tank and access/parking details
- Any recent issues or fault codes
What customers say
“Turned up on time and had the burner stripped and cleaned in no time. New nozzle and a proper set-up on the analyser — house is warmer and the smell of oil is gone.”
— Niamh R., Claremorris, Co. Mayo
“Professional service on our outdoor oil boiler. They found a cracked hose, replaced it and left a clear report with all the readings. Would recommend.”
— Tom F., Midleton, Co. Cork
Nationwide oil boiler servicing & fast booking
We cover all 32 counties with OFTEC-trained technicians. Appointments are arranged around your schedule, and a standard oil-boiler service takes about 60–75 minutes. Every visit includes a burner strip-down and clean, nozzle and filter check/replacement, full safety and efficiency checks, and a clear same-day service report.
- OFTEC-trained technicians – all major oil boiler makes
- Homeowners, landlords and light commercial
- Transparent pricing, parts agreed in advance, digital documentation
What to expect on the day
Your engineer will call ahead with an arrival window, arrive with ID, lay floor protection and isolate the boiler safely before starting. A standard service takes 45–60 minutes; hot water and heating will be off for part of that time. We clean and check the burner, run a flue-gas test, confirm safety devices and reinstate the boiler, then talk you through the readings and any recommendations. You’ll receive a clear service report before we leave, and we tidy the area so you’re ready to use your heating straight away.
What we’ll ask when you book
- Fuel and boiler make/model (if known)
- Any fault codes or symptoms
- Property Eircode and preferred access times
Have these ready and we’ll allocate the right engineer first time.
Ready to book your oil boiler service?
Keep your system safe, efficient and reliable before the colder months.
Quick questions
How often should an oil boiler be serviced?
Every 12 months. Annual servicing keeps the burner clean, improves efficiency and helps prevent breakdowns.
How long does a service take?
About 60–75 minutes for a standard domestic unit. Hot water and heating will be off for part of the visit.
Do you replace the nozzle and oil filter?
Yes — these are checked and normally replaced during the service. If any extra parts are needed, we’ll discuss and agree costs first.
Will there be mess or fumes?
We use floor protection and tidy up before we leave. A slight warm-metal smell on first heat-up can be normal and fades quickly.
Do you service outdoor or condensing oil boilers?
Yes. We service indoor and outdoor, standard and condensing models, including kerosene (28-sec) systems.
What if a fault shows up during the service?
We’ll explain the issue, provide a quote for any repair and can often fix it on the day if parts are on the van.
Do I need to be at home?
Ideally yes. We’ll need access to the boiler, controls and (if applicable) the oil tank and fire-valve.
Do I get paperwork?
Absolutely. You’ll receive a clear service report with combustion readings and recommendations before we leave.
Book your oil service or call us if you have a question we haven’t covered.