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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Just had my house insulated by BlueBuild. Excellent job. First class workers , Madalin and his crew were great. Jason the Project manager very helpful on all occasions , everything done swiftly and 100% happy and would recommend this company.
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I got my house wrapped by BlueBuild. I'm ecstatically happy with the job. The lads worked very hard, neighbours are complimenting how it looks and telling me my bills will be reduced and I cant wait for that. The project manager Jason gave excellent service and kept me updated on all the work as it happened.
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I just had my home insulated by BlueBuild. I also had a heat pump and solar panels installed. My home is lovely and warm now. Thanks to Jason the project manager and Thanks to Alex and crew. Thank you BlueBuild for an excellent service.
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Jason and the gang have just recently compiled a full installation energy upgrade including heat pump ( photo attached). Fantastic crew who performed all tasks expertly and efficiently. We are extremely satisfied with everything and cannot recommend them highly enough.
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We recently had exterior insulation installed on our home and couldn’t be happier with the experience. From start to finish, the project was handled with professionalism and care. A special thanks to Colm, our project manager, who was absolutely fantastic throughout. He was always available, kept us informed at every stage, and made the whole process feel smooth and well-organized. His communication and attention to detail really stood out. The installation team were equally impressive, skilled, efficient, and clearly very experienced. They worked diligently and respectfully. The end result has made a big difference to our home, both in terms of comfort and appearance.
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