Benefit
Upgrade to an A-rated condensing boiler sized correctly for your property.
Boiler Replacement in Northern Ireland
Trade Quote NI connects homeowners with heating engineers who replace combi, system, and oil boilers with modern energy-efficient models backed by long warranties.
Best for10+ year old or inefficient boilers
Typical install1-2 days
Efficiency gainUp to 30% fuel savings
Why upgrade your boiler?
Replacing an ageing boiler reduces running costs, improves reliability, and enables smart heating controls. Engineers on the platform fit leading brands and handle the paperwork from start to finish.
Benefit
Extended manufacturer warranties when installed by accredited engineers.
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Smart controls, weather compensation, and filter upgrades fitted together.
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Full benchmark paperwork, commissioning, and handover guidance.
Common warning signs
- Frequent breakdowns or repairs exceeding £400 per visit.
- Boiler pressure drops daily or the pilot light is unreliable.
- Energy bills rising while heating performance drops.
- Parts are obsolete or the boiler fails safety checks.
Installation process
- 1
Pre-install survey to size the boiler, check gas supply, and plan flue routing.
- 2
Drain down the system, protect flooring, and remove the old appliance safely.
- 3
Fit new boiler, magnetic filter, condensate pipe, and flue to current regulations.
- 4
Powerflush or clean the system, refill with inhibitor, and balance the radiators.
- 5
Commission, test emissions, register the warranty, and provide service schedule guidance.
Engineers regularly work with Worcester Bosch, Ideal, Vaillant, Baxi, Viessmann, Glow-worm to offer extended warranties and reliable aftercare. Always keep your benchmark logbook for service records.
Frequently asked questions
Do I need a powerflush with my new boiler?
Most manufacturers require the system to be thoroughly cleaned before installation. Your engineer will advise whether a powerflush or chemical clean is necessary to protect the warranty.
How long do warranties last?
Modern boilers typically include 5-10 year warranties when fitted by accredited installers and serviced annually. Always register the appliance within 30 days.
Can I replace oil with gas?
Yes. Engineers can quote for oil-to-gas conversions, including tank removal, new gas supply, and boiler installation. Timelines vary depending on local gas network requirements.
Plan your boiler upgrade
Submit your details once to receive quotes from heating engineers covering Belfast, Derry, Lisburn, Bangor, Newry, and every county in Northern Ireland.
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