Why Regular Oil Boiler Servicing is Essential — And How to Get It Right

If you own an oil-fired boiler — whether it’s a Grant, Worcester, Firebird, Trianco, or another trusted brand — you already know it’s a hardworking unit that demands proper care. But when was the last time you had it serviced?

At Heating Parts Specialists, we speak to engineers daily who know just how vital regular oil servicing is — not just for safety, but for performance, efficiency, and long-term savings.

What Does an Oil Service Involve?
An annual oil boiler service typically includes:

• Cleaning or replacing the nozzle
• Inspecting and adjusting the burner
• Checking and replacing the oil filter
• Inspecting flexible hoses and fittings
• Testing the photocell and electrodes
• Running flue gas analysis
• Checking and cleaning the combustion chamber
• Inspecting for leaks or corrosion
• Replacing seals, if necessary

With oil appliances, soot and carbon build-up can reduce performance fast — which is why even one missed service can lead to higher fuel costs, unreliable heating, or even boiler failure.

Why Annual Servicing is Critical
Skipping an oil service isn't just a bad habit — it can be dangerous. Carbon monoxide risks increase with poor combustion, and untreated sludge or blockages can cause lasting damage. Some manufacturers, like Grant or Firebird, even void warranty claims without proof of servicing.

Plus, if you're a landlord or property manager, you have a legal responsibility to ensure oil appliances are safe and maintained.

Parts You’ll Likely Need
Depending on the boiler, a typical service kit may include:

• Nozzle (Danfoss or Delavan — size varies by model)
• Photocell (like the Riello RDB analogue or digital type)
• Oil Filter (cartridge or element)
• Burner Motor (if showing signs of wear or overheating)
• Flexible Oil Line (braided or rubber, 1/4" or 3/8" options)
• Pump Gaskets & Seals (especially for Suntec or Danfoss BFP pumps)

We stock genuine parts for leading oil boiler brands — all ready for next-day delivery or same-day collection from our London or Bridgwater branches.

Signs It’s Time for a Service
Even if it’s not quite a year, these red flags mean it’s time to book in:

• Yellow or irregular flame
• Unusual smells or smoke
• Oil consumption suddenly rising
• Lockouts or resets needed more often
• Loud or rattling noises from the burner

Don’t ignore them — prevention is always cheaper than a breakdown callout.

Engineers: Stock Up Before Winter
We’re already seeing a surge in pre-winter oil servicing — especially in rural areas where heating oil is the main fuel source. Make sure you’re stocked with service kits, spare motors, photocells, and filters before the rush.

Order online 24/7 at www.heating-parts.co.uk or call our expert team if you need help identifying the right parts.

Need Help Finding the Right Oil Boiler Parts?
We’re here to help. Whether it’s a nozzle for a Riello RDB burner or a motor for a Trianco Eurostar, Heating Parts Specialists can source and ship what you need — fast.

 020 4549 0090 | Next-Day Delivery

Published on 16 July 2025