Kelly Heating NI regularly installs new gas and oil boilers across Lisburn and the surrounding area. Based in South Belfast at BT8, we're well placed to serve homeowners throughout Lisburn city, Sprucefield, Dunmurry, Lambeg, Hillsborough and the wider Lisburn district.
Every installation is carried out by Kieran Kelly — Gas Safe registered (No. 557696) and OFTEC certified — with over 20 years of domestic heating experience. You deal directly with Kieran from the first call to the completion certificate.
Boiler Installation Services in Lisburn
We install both gas and oil boilers for Lisburn homeowners, covering all common boiler types — combi, system and regular (heat-only). Whether you need a straightforward like-for-like swap or a more involved installation, we'll assess the job properly and give you a clear quote before any work begins.
- Gas boiler installation — mains gas properties in Lisburn
- Oil boiler installation — off-gas properties across the Lisburn district
- Combi, system and regular boiler types
- Full system flush and inhibitor treatment included
- Magnetic filter, scale inhibitor and carbon monoxide alarm as standard
- Smart thermostat or time clock included
- Gas Safe or OFTEC completion certificate provided
Boiler Brands We Install in Lisburn
- Worcester Bosch — outstanding reliability, up to 10-year warranty
- Vaillant — premium German engineering, highly efficient
- Ideal — UK manufactured, strong mid-range option
- Warmflow — specialist oil boiler, widely used in Northern Ireland
- Grant — Irish-manufactured oil boiler, excellent for off-gas Lisburn properties
Your Engineer
Kieran Kelly
Owner & Lead Engineer — Kelly Heating NI
Kelly Heating NI is a small family business. When you call, you speak directly with Kieran — and his name and reputation are behind every job we carry out in Lisburn.
- ✓ Gas Safe Registered — No. 557696 (verifiable at gassaferegister.co.uk)
- ✓ OFTEC Certified — oil boiler installation & service
- ✓ 20+ years domestic heating experience
- ✓ Based South Belfast BT8 — local to Lisburn
- ✓ No subcontractors — Kieran quotes and installs every job
- ✓ All work certificated on completion
Why Lisburn Homeowners Choose Kelly Heating NI
We're a small family business, not a large call-centre operation. When you contact Kelly Heating NI, you deal directly with Kieran — and his name and reputation are behind every job.
- Local — based in South Belfast, serving Lisburn regularly
- Gas Safe registered and OFTEC certified
- Over 20 years of experience in domestic heating
- Honest assessment — we recommend what's right for your home
- Clear, itemised quotes — no hidden costs
- Work guaranteed and certificated on completion
Signs Your Lisburn Home Needs a New Boiler
- Boiler is over 10–15 years old and increasingly unreliable
- Repair bills are mounting
- Energy bills rising despite no change in usage
- Uneven heating across the house
- Boiler making unusual noises
- Pilot light repeatedly going out
Not sure whether to repair or replace? See our Boiler Breakdown & Repair page or just give us a call for an honest view.
Boiler Grants for Lisburn Homeowners
Eligible homeowners in Lisburn may be able to access funding through the Affordable Warmth Scheme (for households with gross income below £23,000) or through NISEP. We can advise on current eligibility as part of your consultation. Contact the NI Energy Advice Line on 0800 111 44 55 for scheme information.
Frequently Asked Questions — Boiler Installation Lisburn
Yes. Kelly Heating NI regularly installs boilers across Lisburn, Dunmurry, Lambeg, Hillsborough, Sprucefield and the wider Lisburn district.
A like-for-like gas or oil boiler replacement in Lisburn typically ranges from £1,800–£3,500 depending on the boiler model, system type and any additional work required. We provide an itemised quote after a site visit.
A like-for-like boiler swap typically takes one day. We'll agree a date and arrival time that suits you when you book.
Yes. Kieran Kelly is Gas Safe registered, No. 557696, and OFTEC certified for oil boiler work. You can verify this on the Gas Safe Register website.
Eligible Lisburn homeowners may qualify for support through the Affordable Warmth Scheme or NISEP. We can discuss this as part of your consultation.