Why replace an Oil Boiler?
Older oil boilers can waste up to 35–40% of their fuel through flue gases and poor combustion efficiency.
Result: A modern condensing oil boiler operates at over 90% efficiency, converting almost every drop of oil into usable heat — saving you money and reducing emissions.
Why Choose Oil Boiler Replacement?
Is My Home Suitable?
Most oil boiler upgrades can be completed in 1–2 days with minimal disruption, typically using your existing oil tank and radiators.
How an Oil Boiler Replacement Works
Upgrading your oil boiler is simple, quick, and hassle-free:
Most replacements are completed in 1–2 days — giving you warmer, more reliable heating with lower fuel bills.
SEAI Grants & Supports
SEAI does not provide grants for new oil boilers — however, generous funding is available for homeowners who upgrade from oil to a heat pump system.
Our team will:
- Confirm your eligibility for increased heat pump grants
- Advise on the most cost-effective transition
- Guide you through the application process
Moving from oil to renewable heating not only improves comfort — it also significantly reduces long-term fuel costs and carbon emissions.
How the Process Works
We inspect your current boiler, oil tank, and heating setup.
You receive a clear, fixed-price quote and system recommendation.
We agree a date that suits your home.
Our technicians remove your old boiler, fit the new condensing model, and test the full system.
Optional smart thermostat setup and efficiency check included.
Frequently Asked Questions on Oil Boiler Replacement
We’ve answered some common questions to help you with any concerns
Costs depend on boiler type, home size, and insulation. We provide free, no-obligation quotes and identify available grants to reduce upfront costs.
Through installation of smart heating controls, you may be entitled to a grant of €700. Homeowners replacing Gas or Oil systems with Heat Pumps will qualify for grants up to €12,500. We’ll guide you through the application to ensure you get the maximum support available.
Oil boiler replacements usually take 1–2 days. We carefully plan work to minimise disruption to your home life.
Upgrading to a modern oil boiler can reduce energy usage and fuel bills, especially when combined with smart heating controls.
Hear from Our Customers
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Very happy with the work that was done on the house. The improvement it has already it brilliant. The men doing the work were so efficient and friendly too.
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Thanks for all the great work done by the team ,they kept the place very tidy and worked long days to get it finished for me . My project manager was a great help always able to take my call . Thanks to the team in the back office also regards Edward
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Very professional team, clean work delivered. Friendly and helpful team providing a super service. Highly recommended 👌
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I've just had external wall insulation to my house and while it's an excellent job, most of the credit goes to Jason Roe, project manager. Nothing was a problem to him. He was so considerate and attentive. He made it all happen without a hitch. I would definitely recommend Bluebuild 100%
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Bluebuild recently completed my Insulation and associated works. I have to say from Jason who was the Project Manager to everyone who was outsourced to do their job,I cannot speak highly enough about them. Everyone worked 100% and were so professional and courteous at all times. I would highly recommend Bluebuild.
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