Kelly Heating NI provides oil and gas boiler installation throughout Dunmurry and the surrounding south-west Belfast area. Whether your boiler has finally given up or you're replacing an ageing, inefficient system before it becomes a problem, Kieran Kelly will assess your home properly and give you an honest recommendation — not just the easiest sale.
Boiler Installation for Dunmurry Homes
Dunmurry is a predominantly residential area with a mix of older semi-detached and terraced housing alongside newer builds. Many properties in the area are connected to the mains gas network, though a number of homes — particularly on the outskirts toward Twinbrook and Lagmore — remain on oil. Kelly Heating NI is qualified to install both gas and oil boilers, so whatever fuel type your home uses, we can help.
A like-for-like boiler replacement in a typical Dunmurry home takes one day and causes minimal disruption. We arrive on time, protect your floors and work areas, and carry out a full system flush and commissioning before we leave. You'll receive your Gas Safe or OFTEC certificate on completion.
Signs Your Dunmurry Boiler Needs Replacing
- Your boiler is over 10–15 years old and becoming unreliable
- Repair costs are mounting — approaching the cost of a new boiler
- Your energy bills have increased despite similar usage
- Uneven heating or inconsistent hot water across the home
- Banging, kettling or other unusual noises from the boiler
- The boiler needs to be reset regularly to keep it running
Not sure whether to repair or replace? See our boiler breakdown service — Kieran will give you an honest assessment of whether repair makes sense or whether a new boiler is the better long-term decision.
What's Included in Your Installation
Every Kelly Heating NI boiler installation includes the following as standard:
- Full site assessment and honest system recommendation
- Supply and installation of new A-rated boiler
- Horizontal flue (vertical flue available at additional cost)
- Magnetic boiler protection filter
- System flush, inhibitor and scale protection chemicals
- Wireless thermostat
- Carbon monoxide alarm
- Gas Safe or OFTEC completion certificate
- Full controls walkthrough before we leave
We offer four boiler packages starting from £2,250 + VAT. See our boiler packages and prices.
Boiler Brands We Install in Dunmurry
We install Worcester Bosch, Vaillant, Ideal, Vokera, Warmflow and Grant, among others. We're not tied to any single manufacturer and will recommend the brand and model that genuinely suits your home, fuel type and budget. See our full boiler brands page for more detail.
Frequently Asked Questions — Boiler Installation Dunmurry
Our boiler packages start from £2,250 + VAT for a standard like-for-like gas combi boiler swap. The final price depends on the boiler brand, system type and any additional work required. We provide a fully itemised quote after visiting your home — no hidden costs.
Yes — we cover Dunmurry for boiler breakdown and repair as well as installation. See our emergency boiler repair page for more information.
A standard like-for-like swap takes one full working day. More complex jobs may take longer — we'll confirm the timeframe in your quote.
Yes. Kieran is OFTEC registered and experienced with all major oil boiler brands including Warmflow, Grant and Firebird. Oil boiler installation pricing is quoted separately as it varies more than gas.
Serving Dunmurry and the Surrounding Area
We cover Dunmurry, Twinbrook, Lagmore, Derriaghy, Lisburn Road and the wider south-west Belfast corridor. We also cover Belfast, Lisburn, Holywood and Carryduff.