Why replace a Gas Boiler?
Older boilers lose up to 40% of their energy as waste heat.
Modern condensing models reach 90%+ efficiency and integrate with smart thermostats for effortless control.
Top 3 Reasons for Gas Boiler Replacement
Is My Home Suitable?
Most installations are completed in 1–2 days with minimal disruption.
What's Included in Our Service
- High-Efficiency Condensing Gas Boiler
- Heating Controls Upgrade (if required)
- Professional Installation & Commissioning
- Optional Smart Thermostat
- BER Reassessment if needed
Most installs are completed in 1–2 days with minimal disruption.
SEAI Boiler Grants
Claim up to €700 through the SEAI Better Energy Homes Scheme when upgrading your gas boiler with smart heating controls. Smart heating controls help you save energy and money by automatically adjusting your heating based on your schedule and room temperature.
BlueBuild will support you through the grant application process from start to finish.
If you’re considering upgrading your boiler, it’s worth exploring heat pump grants — which offer significantly greater financial support.
How the Process Works Book Free Heating Survey
Frequently Asked Questions on Insulation for your home
We’ve answered some common questions to help you with any concerns
Costs vary depending on system type, home size, and insulation. We provide free, no-obligation quotes and help identify grant support to lower upfront expenses.
Gas or oil boiler replacements typically take 1–2 days. Heat pump installations may take longer depending on complexity. We carefully plan work to minimise disruption to your home life.
Savings depend on your current system and home insulation. Modern boilers and heat pumps can reduce energy usage by 20–50%, cutting both bills and carbon emissions.
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.
Hear from Our Customers
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June 2026 External Wrap, Cavity Wall and Attic Insulation. Chimney blocked and vents inserted in all of the rooms and attic. I would like to thank Tony, the project manager and Niamh in the office for such a good experience (and all the Bluebuild people who worked on our house). Bluebuild carried out all works in a timely, professional manner with minimum distruption. They organised everything and helped with the grant paperwork. I would have no hesitation recommending Bluebuild.
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Very happy with all works done 'lads were very helpful always ,worked very hard and long days to get our job done thanks to all who helped get our ho.e finished
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Fantastic service from Blue Build. The whole team did an excellent job wrapping our house. They were professional, reliable, hardworking, and the quality of the workmanship is outstanding. We couldn’t be happier with the finished result and would highly recommend them.
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We recently had external insulation installed on our home, and we couldn't be happier with the entire experience. The professionalism shown by everyone involved was outstanding. The quality of the workmanship is excellent, and the attention to detail is clear in the finished result. The installation crews were incredibly hardworking, friendly and courteous. They arrived early each day, worked efficiently, and were always happy to answer any questions we had. The management team were equally impressive. They were approachable, helpful and very accommodating throughout the project, making the whole process straightforward and stress-free. Nothing ever seemed like too much trouble. The work was completed much quicker than we expected, without any compromise on quality. The team also took great care to keep everything clean and tidy, leaving the property in excellent condition when the job was finished. We are absolutely delighted with the final result and would have no hesitation in recommending this company to anyone . A first-class service from start to finish. We'd like to specifically thank Michael, Colm, Lulian and his crew and Niamh the secretary!
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Had the most wonderful group of lads in to do the wrap fan s windows and attic insulation in my mum's house in wicklow town under the supervision of Jason roe project manager From start to finish a fantastic job the lads all very mannerly and plesent extremely tidy Could not rate them any higher Thrilled with the end result Thank you guys Andre and most of all Jason
Clean energy for homes and businesses with BlueBuild
Smart, sustainable energy solutions tailored to you.