28 January 2026
SEAI Grants for Windows & Doors
SEAI Window & Door Grants Now Open – Upgrade Your Home & Cut Energy Bills
Upgrade your windows and doors with SEAI grants and make your home warmer, more comfortable and cheaper to run.
From March 3, homeowners can apply for funding to replace inefficient windows and doors — helping to reduce heat loss, lower energy bills and improve overall comfort.
Applicants can apply for the windows grant, the doors grant, or both, subject to their home meeting the required energy efficiency standards.
We are to help with our Greenify Loan - Borrow up to €100,000 over 10 years at 5.6% APR.
What’s Included?
SEAI grants are available to support homeowners in upgrading windows and doors as part of improving overall home energy efficiency. These upgrades can significantly reduce heat loss and improve your home’s BER rating, making it more energy efficient and comfortable all year round.
Improving insulation through better windows and doors is often one of the first steps towards a more energy-efficient home and can also help prepare your property for future upgrades such as heat pumps.
Important – Building Fabric & Insulation Requirements
The grants are aimed at homes where the building fabric meets the standard suitable for heat pump installation.
This means that many homes may need to install attic and/or wall insulation first to improve energy efficiency. Only once this standard is met will homeowners be able to qualify for the windows and doors grant.
In most cases, this will be managed as part of a whole-home energy upgrade through an SEAI-registered One Stop Shop.
Grant Levels (As Part of a Full Retrofit)
Under the SEAI One Stop Shop Home Energy Upgrade Scheme, grants are available for windows and external doors as part of a whole-home upgrade:
Windows:
- Apartment: up to €1,500
- Mid-terrace: up to €1,800
- Semi-detached / End of terrace: up to €3,000
- Detached: up to €4,000
External Doors:
- Up to €800 per door (maximum 2 doors – up to €1,600)
Depending on your home and upgrade plan, combined supports for windows and doors could total up to €5,600.
Eligibility – What Most Homes Need
Most homes must:
- Be built before 2011
- Start with a BER of B3 or lower
- Meet fabric standards suitable for heat pump installation
- Achieve a BER of B2 or higher after works
- Complete multiple energy upgrades where required
👉 See full details on this grant on the SEAI website:
https://www.seai.ie/grants/home-energy-grants/individual-grants/windows-and-doors
Making Your Home Heat Pump Ready
These grants are part of SEAI’s wider push to make homes suitable for high-efficiency heat pumps.
Heat pumps work best in well-insulated, draught-free homes with modern windows and doors. This is why SEAI is placing strong emphasis on upgrading the fabric of the building before installing a heat pump.
Increased Insulation Grants
Also announced are increased grants for attic and cavity wall insulation from February 3, helping to offset rising costs.
In addition:
- First-time buyers can access 100% attic insulation grants from March 3
- Enhanced supports are available for people eligible under the Warmer Homes Scheme
- From March 3, homeowners can also apply for a second wall insulation grant, making it easier to fully upgrade their home
👉 See full details on increased grants for homeowners here:
https://www.seai.ie/news-and-events/news/increased-grant-amounts-for-homeowners
How Can Synergy Credit Union Help?
Make your upgrade affordable with a Green Loan
While SEAI grants can cover a significant portion of the cost, many homeowners still need to fund the remaining balance.
At Synergy Credit Union, we help you bridge that gap with our Green Loan — offering a simple and affordable way to complete your home upgrade without delay.
✔ Competitive rates
✔ Quick loan decisions
✔ Local, personal service
Take the Next Step
- Apply through an SEAI-registered One Stop Shop or manage the process yourself from March 3
- Check what grants you qualify for on the SEAI website
- Talk to Us about Greenify Loan options
A BER assessor can advise you by checking your existing BER or by carrying out a new BER assessment before you apply. This is strongly recommended to avoid the risk of your home not meeting the required standard after works — which could result in your grant being declined.
If your BER Advisory Report shows that your roof and walls are rated as Good, or if your Heat Loss Indicator (HLI) is below 2.3, you may already meet the requirements. You can find your BER details on the SEAI National BER Register.
In most cases, yes. YOu can apply and manage it yourself but the grant is generally delivered as part of a whole-home upgrade through an SEAI-registered One Stop Shop to ensure your home meets the required fabric and energy standards.
Yes. A BER is required to confirm your home’s starting energy performance and to verify that it meets the required standard after works are completed.
This varies by home and scope of works, but typically the process can take several weeks to a few months, including assessment, grant approval, installation works and final BER certification.
Possibly. From March 3, new rules allow homeowners to apply for a second wall insulation grant in some cases. A One Stop Shop or BER assessor can advise you based on the upgrades you have already completed.
Yes. Many homeowners use a Green Loan from Synergy Credit Union to help cover the portion of costs not covered by the SEAI grant, spreading the cost over affordable repayments while benefiting from lower energy bills.
Disclaimer:
SEAI grant eligibility, amounts and criteria are set and administered by the Sustainable Energy Authority of Ireland and may change. This information is provided for general guidance only. Synergy Credit Union does not administer SEAI grants and cannot guarantee eligibility or grant approval. Always check the SEAI website and consult an SEAI-registered provider for the most up-to-date requirements. Loan approval is subject to standard credit assessment and terms and conditions apply.
