Find a trade · Randalstown

Oil Boiler Engineer in Randalstown, Northern Ireland

Be the first to post a oil boiler engineer job in Randalstown — we'll match you with vetted NI tradespeople.

Post a oil boiler engineer job — freeAll NI oil boiler engineersAcross Antrim & Newtownabbey

Looking for a oil boiler engineer in Randalstown? Randalstown sits within Antrim & Newtownabbey, and the oil boiler engineers listed here cover this area as part of their council coverage on NI Trades. Oil Boiler Engineer jobs in Randalstown typically range from annual oil boiler service to boiler breakdown repair. Insurance, credentials and references are checked at application stage only; please verify current insurance and credentials directly with any tradesperson before work begins or any money is paid.

What oil boiler engineer jobs in Randalstown typically involve

Oil Boiler Engineers working in Randalstown are typically hired for annual oil boiler service, boiler breakdown repair and oil boiler replacement. The right tradesperson for your job depends on the scope: small repairs are usually quoted on an hourly or half-day basis, while larger jobs are quoted as a full job price after a site visit. See the typical NI cost table below for indicative pricing.

Why hire a local Randalstown oil boiler engineer

A oil boiler engineer who already works across Antrim & Newtownabbey usually knows the property stock and the small site-specific issues (access, parking, on-street loading, local layout quirks) that a tradesperson coming in from outside the area is more likely to underestimate. Hiring locally also means shorter travel time for follow-up visits if anything needs adjusting after the job.

No reviews for oil boiler engineers yet
Reviews on NI Trades are tied to verified jobs. As soon as a homeowner hires a oil boiler engineer through the platform and the job completes, ratings will start appearing here.
How it works
1
1
Post your job
Describe what needs doing and confirm your job is in Randalstown. Tradespeople see only the job — never your contact details.
2
2
Get notified of interest
When a vetted tradesperson expresses interest you get a notification. Maximum 3 per job — no spam.
3
3
Choose and connect
Only profiles of tradespeople interested in your specific job are revealed. You decide who to contact.

Common services

  • Annual oil boiler service & efficiency test
  • Boiler breakdown diagnosis & repair
  • Full oil boiler replacement (condensing)
  • Oil tank inspection, installation & relocation
  • Bunded tank upgrade (single-skin replacement)
  • Oil feed line, fire valve & filter replacement
  • Nozzle & electrode replacement
  • Combustion analysis & flue gas testing
  • Landlord oil boiler safety check
  • Power flushing & system cleansing
  • Conversion from open-vent to sealed system
  • CD/10 & CD/11 commissioning certificates

What to ask before hiring

  • Are you OFTEC registered? (ask for the licence number)
  • Can I verify your registration at oftec.org?
  • Are you registered for oil-firing (OFT10-105E) and tank work (OFT10-600A)?
  • Will you issue a CD/10 or CD/11 certificate on completion?
  • What boiler brands are you accredited to install (Grant, Firebird, Worcester Bosch, Warmflow)?
  • Do you offer an annual service plan?
  • Are you fully insured with public liability cover?

Typical costs in Northern Ireland

Job typeTypical priceNotes
Annual oil boiler service£85–£140Includes efficiency & combustion test
Landlord oil safety check£95–£150Equivalent of a gas CP12 for oil
Boiler breakdown call-out£80–£150Plus parts; out-of-hours rates apply
Boiler repair£150–£500Depends on fault and parts (nozzle, pump, control box)
Oil boiler replacement (condensing)£2,500–£4,500Supply & fit, like-for-like, exc. tank
Boiler + bunded tank replacement£4,000–£6,500Full system upgrade
New bunded oil tank (1,200L)£1,200–£2,000Supply, base & fit; siting rules apply
Power flush£400–£700Recommended before fitting a new boiler

Qualifications & accreditations to look for

OFTEC Registered Technician
Competent person scheme for oil-firing in NI — check oftec.org
OFT10-105E
Servicing & commissioning of oil-fired appliances up to 70kW
OFT10-600A
Oil storage tank installation & inspection
OFT10-101
Oil supply pipework & fire valves
City & Guilds NVQ Level 2/3
Plumbing & heating qualification underpinning OFTEC routes
Manufacturer Accreditation
Grant G1, Firebird, Worcester Bosch, Warmflow installer schemes
Public Liability Insurance
Minimum £1m — required on NI Trades

Frequently asked questions

How often should I service my oil boiler in NI?
Once a year, without exception. Annual servicing is required to maintain the manufacturer warranty on almost every modern oil boiler, and an oil boiler that goes unserviced for more than 12 months will burn fuel less efficiently and is far more likely to fail in cold weather. Book your service in late summer or early autumn before the winter rush, when engineers are easier to get hold of.
What is OFTEC and why does it matter?
OFTEC (the Oil Firing Technical Association) runs the competent-person register for oil-fired heating and cooking appliances and oil storage tanks across the UK and Ireland. In Northern Ireland an OFTEC-registered technician can self-certify oil-firing work and notify it to Building Control on your behalf, in the same way Gas Safe registration works for gas. Anyone working on your oil boiler or oil tank should be on the OFTEC register — you can check the number on the card at oftec.org.
How much does an oil boiler service cost in Northern Ireland?
A standard annual service from an OFTEC-registered engineer in NI typically runs £85–£140 including a combustion efficiency test, nozzle change, filter clean and a full safety check. Landlord oil safety certificates cost slightly more (£95–£150). Many engineers offer annual service plans at £10–£18 per month which bundle the service, priority call-out and discounted parts.
How much does it cost to replace an oil boiler in NI?
A like-for-like swap to a modern A-rated condensing oil boiler typically costs £2,500–£4,500 supplied and fitted, depending on brand (Grant, Firebird, Worcester Bosch and Warmflow are the most common in NI). Replacing the boiler and the oil tank at the same time runs £4,000–£6,500. Moving the boiler, upgrading to a sealed system or adding a power flush will add to the figure — always get an itemised written quote.
Is my oil boiler engineer registered? How do I check?
Ask to see their OFTEC ID card — every registered technician carries one with a photo, a licence number and the categories of work they are signed off for (look for OFT10-105E for boiler servicing and OFT10-600A for tank work). You can verify the number against the live register at oftec.org/find-a-technician. If an engineer cannot produce a card or refuses to be checked, do not let them touch the appliance.
Can any plumber work on my oil boiler?
No. Oil-firing is regulated work — a general plumber without OFTEC registration cannot lawfully commission a new oil boiler or oil tank in NI, and cannot self-certify the installation to Building Control. Some plumbers hold both Gas Safe and OFTEC tickets, which is fine; the test is whether the specific person carrying out the oil-firing work is OFTEC-registered for the category of work they are doing.
Do I need building control approval for a new oil boiler?
Yes. A new or replacement oil boiler is notifiable work under Northern Ireland building regulations. The simplest route is to use an OFTEC-registered installer who can self-certify and notify the work for you, then issue a CD/11 commissioning certificate. If the work is done by someone who is not OFTEC-registered you must apply to your local council Building Control directly, pay a fee and arrange an inspection — slower and more expensive. Keep the CD/11 (or Building Control completion certificate) with your home paperwork; conveyancing solicitors routinely ask for it on sale.
Important
Only an OFTEC-registered technician can self-certify oil-firing work in Northern Ireland and notify the installation to Building Control on your behalf. Always ask to see their OFTEC ID card before work starts and check the number at oftec.org. A registered engineer also issues a CD/11 commissioning certificate on a new install — keep this with your home paperwork; you will need it when selling.

Other tradespeople in Randalstown

Plumber in RandalstownElectrician in RandalstownCarpenter in RandalstownRoofer in RandalstownPainter & Decorator in Randalstown
Hiring a oil boiler engineer in Randalstown

Randalstown is part of our Northern Ireland directory. NI Trades is an introduction service — we list tradespeople who have passed our application-stage checks, but we are not party to any contract you enter into with a tradesperson. See how we vet tradespeople for the full vetting methodology, or browse all trade categories.

Oil Boiler Engineers in other NI towns57 towns
Oil Boiler Engineer in AntrimOil Boiler Engineer in ArdsOil Boiler Engineer in ArmaghOil Boiler Engineer in BallycastleOil Boiler Engineer in BallyclareOil Boiler Engineer in BallymenaOil Boiler Engineer in BallymoneyOil Boiler Engineer in BallynahinchOil Boiler Engineer in BanbridgeOil Boiler Engineer in BangorOil Boiler Engineer in BelfastOil Boiler Engineer in BushmillsOil Boiler Engineer in CarrickfergusOil Boiler Engineer in CastledergOil Boiler Engineer in CastlewellanOil Boiler Engineer in ColeraineOil Boiler Engineer in ComberOil Boiler Engineer in CookstownOil Boiler Engineer in CrossmaglenOil Boiler Engineer in DownpatrickOil Boiler Engineer in DromoreOil Boiler Engineer in DungannonOil Boiler Engineer in DungivenOil Boiler Engineer in EnniskillenOil Boiler Engineer in GilfordOil Boiler Engineer in HolywoodOil Boiler Engineer in IrvinestownOil Boiler Engineer in KilkeelOil Boiler Engineer in KillyleaghOil Boiler Engineer in LarneOil Boiler Engineer in LimavadyOil Boiler Engineer in LisburnOil Boiler Engineer in LisnaskeaOil Boiler Engineer in LondonderryOil Boiler Engineer in LurganOil Boiler Engineer in MagheraOil Boiler Engineer in MagherafeltOil Boiler Engineer in MarkethillOil Boiler Engineer in MoiraOil Boiler Engineer in MoyOil Boiler Engineer in NewryOil Boiler Engineer in NewtownabbeyOil Boiler Engineer in NewtownardsOil Boiler Engineer in NewtownstewartOil Boiler Engineer in OmaghOil Boiler Engineer in PortadownOil Boiler Engineer in PortaferryOil Boiler Engineer in PortglenoneOil Boiler Engineer in PortrushOil Boiler Engineer in PortstewartOil Boiler Engineer in RathfrilandOil Boiler Engineer in RostrevorOil Boiler Engineer in SaintfieldOil Boiler Engineer in StrabaneOil Boiler Engineer in TemplepatrickOil Boiler Engineer in TobermoreOil Boiler Engineer in Warrenpoint