Oil boilers need a different skill set to gas — the burner, oil pump, nozzle, photocell and combustion setup are all specific to oil. TeamHeat's heating engineers are experienced in oil heating and repair Grant, Warmflow and Firebird boilers across Belfast, Lisburn and all Northern Ireland. When you call, you'll speak to a real engineer who can often talk you through a simple lockout reset over the phone. If a visit is needed, we attend, diagnose the fault in plain English, and give you a clear price before any work begins.
Oil boiler servicing — keep your warranty valid
An annual oil boiler service is essential: it keeps the boiler burning cleanly and efficiently, catches faults early, and is required by manufacturers like Grant and Warmflow to keep your warranty valid. Our service includes a full burner service and combustion analysis, nozzle and filter replacement where required, flue and oil line inspection, and a written service report. We service Grant, Warmflow and Firebird oil boilers to manufacturer standards across Belfast and Northern Ireland.
Oil boiler installation & replacement
If your oil boiler is beyond economical repair, we fit modern condensing oil boilers from Grant and Warmflow — both established oil heating manufacturers with strong warranties. Because every oil installation is different (tank condition, oil line runs, flue routing, ventilation), we don't publish a fixed online price. Instead we carry out a proper survey and give you an honest, accurate fixed price — no guesswork, no surprises on the day. Call us or send a WhatsApp and we'll arrange a quote.