If you’re thinking about replacing your windows or doors, 2026 is the best time to do it. For the first time ever, SEAI offers a standalone grant for windows and doors under the Better Energy Homes scheme, launched on 2 March 2026. Previously, this support was only available through the full deep-retrofit One Stop Shop route now homeowners can apply for windows or doors on their own.
Here’s a complete breakdown of how it works, how much you can get, and what you need to qualify.
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How Much Can You Get?
Grant amounts vary depending on your home type:
- €4,000 for detached homes, €3,000 for semi-detached, €1,800 for mid-terrace, and €1,500 for apartments for window replacement
- External doors are eligible separately at €800 per door, up to a maximum of 2 doors
That means a detached home replacing windows and two doors could receive up to €5,600 in total support.
Eligibility Requirements
There are a few important conditions to check before applying:
1. Your home’s age
Your home must have been built before 2011 to qualify.
2. Insulation standards
This is one of the most important (and often overlooked) requirements. SEAI checks this through the Heat Loss Indicator (HLI) on your BER assessment, which must be 2.3 or lower after works. In practical terms, your attic and wall insulation need to already be in good shape — rated “Good” or “Very Good” on your BER Advisory Report. If they’re not, SEAI grants are also available to upgrade insulation first.
3. Window performance standard
Your replacement windows must achieve an average U-value of 1.4 W/m²K or lower a measure of how much heat escapes through the glass. For most homes still on original single or double glazing, this effectively means replacing all windows in the house to qualify. If some windows are already high-performance, those may not need to be touched.
How to Apply – Step by Step
- Get a BER assessment (if you don’t already have one) – this typically costs €150–€350, and SEAI offers a contribution toward this cost.
- Check your insulation status – if your attic or walls don’t meet the required standard, consider applying for insulation grants first (these can stack with your windows/doors application).
- Choose an SEAI-registered contractor – this is a requirement, and you’ll need a written contract from them before proceeding.
- Apply for grant approval BEFORE work begins starting work early will disqualify you from the grant entirely, so this step is critical.
- Complete the Declaration of Works form with your contractor.
- Carry out the upgrade, then have a follow-up BER assessment if required.
- Receive your grant payment once everything is verified.
A Smart Strategy: Combine Grants
One of the best parts of the 2026 changes is that Better Energy Homes grants stack across different measures you can claim attic insulation, a heat pump, and solar PV at the same time as your windows and doors grant (as long as they’re separate applications, not through One Stop Shop). If you’ve been putting off insulation upgrades, now is the time to bundle them in not only will it help you qualify for the windows/doors grant, but attic insulation grants now cover roughly 80% of the total cost.
Why This Matters Beyond the Grant Money
SEAI is placing strong emphasis on upgrading windows and doors because well-insulated, draught-free homes are essential for heat pumps to work efficiently. So even if you’re not planning a heat pump right now, upgrading your windows and doors sets your home up for future energy improvements while immediately cutting heat loss, reducing your bills, and improving comfort year-round.
Choosing the Right Windows, Doors & Installer
Meeting the U-value requirement of 1.4 W/m²K isn’t just a box-ticking exercise it’s also where the real comfort and savings come from. Not all “energy-efficient” windows are created equal, so it’s worth working with a supplier who understands both the technical performance standards and the practical realities of Irish weather and home types.
This is where a company like Wright Windows can help offering high-performance uPVC and aluminium windows and doors that meet modern energy standards, along with guidance on the BER and grant process from start to finish. Working with an experienced, SEAI-registered installer also means one less thing to worry about when it comes to paperwork and compliance.
Final Thoughts
The 2026 SEAI Windows & Doors Grant is one of the most significant home energy upgrades introduced in years and for many homeowners, it could cover a substantial portion of the cost of replacing old, draughty windows and doors. The key things to remember: check your insulation first, get BER-assessed, choose a registered contractor, and always apply for approval before starting any work.
Grant amounts and eligibility criteria are subject to change always confirm current details directly with SEAI or your registered contractor before starting your project.
Read more : Upgrade Your Home with SEAI’s 2026 Windows & Doors Grant