Ireland's Sustainable Energy Authority of Ireland (SEAI) introduced a major change to its grant programme in January 2026: homeowners can now apply for standalone grants for windows and doors without committing to a full home retrofit. Previously, window and door replacements were only funded as part of a comprehensive One-Stop Shop deep retrofit targeting a B2 BER rating. The new Individual Energy Upgrade Grants remove that barrier.
Under the updated scheme, detached homeowners can receive up to €4,000 towards new windows and €1,600 for up to two external doors. The online application portal opened on 2 March 2026, and works ordered from 27 January 2026 onward are eligible. To qualify, your home must meet a Heat Loss Indicator (HLI) of 2.3 or lower, meaning the walls and attic should already be adequately insulated.
This guide covers every pathway to grant-funded window and door upgrades in Ireland, including the new standalone grants, the Warmer Homes Scheme for low-income households, the One-Stop Shop retrofit route, and lesser-known supports such as the Housing Aid for Older People and the Fuel Allowance-linked Energy Efficiency Obligation Scheme.
Whether you are replacing draughty single-glazed windows in a 1970s semi-detached or upgrading doors in a rural farmhouse, this article explains the grant amounts, eligibility rules, and application steps for 2026.
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What SEAI Grants Are Available for Windows and Doors in 2026?
Following a major policy shift in early 2026, the Sustainable Energy Authority of Ireland (SEAI) now offers four distinct pathways for upgrading windows and doors:
- Individual Energy Upgrade Grants (New for 2026): Standalone grants for windows and doors without a full retrofit.
- The National Home Energy Upgrade Scheme: Part of a comprehensive "One-Stop Shop" retrofit.
- The Better Energy Warmer Homes Scheme: Free upgrades for qualifying households.
- The Energy Efficiency Obligation Scheme: Support via energy suppliers.
| Scheme | Grant Type | Max Window Grant | Means Tested? |
|---|---|---|---|
| Individual Energy Upgrade | Fixed grant | €4,000 (detached) | No |
| One-Stop Shop | Part of deep retrofit | Up to 50% of costs | No |
| Warmer Homes | Fully funded | 100% covered | Yes |
| EEOS | Supplier-funded | Varies | No |
Individual Energy Upgrade Grants: Standalone Windows & Doors
This is the most significant update for 2026. The online portal for standalone window and door applications opened on 2 March 2026. This allows homeowners to upgrade their glazing without committing to a full B2 deep retrofit.
Technical Requirement: The HLI Rule
To qualify for the standalone grant, your home must meet a Heat Loss Indicator (HLI) of 2.3 or lower. This ensures the "fabric" of the home (walls and attic) is already sufficiently insulated before the SEAI provides funding for windows. If your home does not meet this threshold, you may need to complete insulation upgrades first.
SEAI Window & Door Grant Amounts 2026
| Type of Home | Window Grant | Door Grant (Max 2) | Max Combined |
|---|---|---|---|
| Apartment | €1,500 | €800 per door | €3,100 |
| Mid-terrace house | €1,800 | €800 per door | €3,400 |
| Semi-detached or end of terrace | €3,000 | €800 per door | €4,600 |
| Detached house | €4,000 | €800 per door | €5,600 |
Source: SEAI. Last updated March 2026.
How to Apply for the SEAI Window and Door Grant
The application process for the standalone Individual Energy Upgrade Grant follows these steps:
- Get a BER assessment: A registered BER assessor evaluates your home and confirms your HLI is 2.3 or lower. If you already have a recent BER certificate, check whether it includes the HLI figure.
- Choose an SEAI-registered contractor: All window and door work must be completed by a contractor listed on the SEAI's National Home Energy Upgrade register.
- Get quotes: Obtain at least two quotes. Ensure new windows will achieve a U-value of 1.4 W/m²K or better.
- Apply online: Submit your application through the SEAI online portal (opened 2 March 2026). You can apply before or after works begin, provided the order was placed on or after 27 January 2026.
- Complete the works: Have your windows and/or doors installed by the registered contractor.
- Grant payment: After verification and a post-works BER assessment, the SEAI pays the grant directly to your bank account.
National Home Energy Upgrade Scheme (One-Stop Shop)
The National Home Energy Upgrade Scheme remains the best option for a complete "One-Stop Shop" service. Under this scheme, an SEAI-registered company manages the entire process, from the initial assessment to the final grant application. Windows and doors are included as part of a deep retrofit aiming for a minimum B2 BER rating.
New for 2026: Low-Interest Retrofit Loans
Homeowners can now access the Home Energy Upgrade Loan Scheme. This offers low-interest loans (approx. 3%) of up to €75,000 for energy upgrades, including windows and doors, when working with a One-Stop Shop. This can bridge the gap between the grant amount and the total retrofit cost.
Eligibility for SEAI Window and Door Grants
Whether you are applying via the standalone route or through a One-Stop Shop, the core requirements are:
- Property must be built and occupied before 2011.
- New windows must achieve a U-value of 1.4 W/m²K or better.
- For standalone grants, your home must have an HLI of 2.3 or lower after works.
- Work must be carried out by an SEAI-registered contractor.
- The grant is available once per property (you cannot claim again for the same measure).
Better Energy Warmer Homes Scheme: Free Windows & Doors
The Better Energy Warmer Homes Scheme offers free replacement windows for vulnerable individuals. The entire cost of the upgrade is covered by the SEAI, including materials, labour, and the BER assessment.
Eligibility Requirements
- Own your home and be living in it.
- Your home must have been built and occupied before 2006.
- Be in receipt of a qualifying social welfare payment, such as the Fuel Allowance, Disability Allowance, or Household Benefits Package.
Energy Efficiency Obligation Scheme (EEOS)
Under this scheme, energy suppliers with sales greater than 600 GWh per year are obligated to support energy efficiency projects. You may be able to secure support for windows and doors through your energy provider. Obligated parties include:
Contact your supplier directly to ask about EEOS-funded window and door programmes. The level of support varies between providers and changes annually.
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How Much Can New Windows and Doors Save on Energy Bills?
Upgrading to energy-efficient double or triple glazing could reduce your energy bills by €100 to €400 per year, depending on the size of your home and the condition of your existing windows. Older single-glazed or aluminium-framed windows are responsible for up to 30% of a home's heat loss.
Beyond the financial savings, new windows improve your home's BER rating, reduce noise pollution, and increase the property's resale value. Budget 2026 also maintains 0% VAT on the supply and installation of energy-efficient windows and doors, which further reduces the upfront cost.
| Window Type | Typical U-value | Estimated Annual Saving |
|---|---|---|
| Single glazed (existing) | 4.5–5.0 W/m²K | — |
| Double glazed (A-rated) | 1.2–1.4 W/m²K | €150–€300 |
| Triple glazed | 0.7–1.0 W/m²K | €250–€400 |
Savings depend on home size, existing glazing, and heating system. Figures are indicative.
Are There Other Grants for Windows and Doors?
Beyond the SEAI schemes, the Housing Aid for Older People Scheme (for those over 66) covers the repair or replacement of windows and doors as part of essential home improvements. This scheme is administered by your local authority, not the SEAI.
Housing Aid for Older People Grants 2026
| Household Income | % Covered | Max Grant |
|---|---|---|
| Up to €37,500 | 100% | €10,700 |
| €37,501 – €43,750 | 85% | €9,095 |
| €43,751 – €50,000 | 75% | €8,025 |
| €50,001 – €62,500 | 50% | €5,350 |
| €62,501 – €75,000 | 30% | €3,210 |
Source: Department of Housing, Local Government and Heritage.
To apply, contact your local council's housing section. You will need proof of age, income documentation, and a description of the works required.
Frequently Asked Questions About SEAI grants for windows and doors
The SEAI online portal for standalone individual window and door grants opened on 2 March 2026. However, works ordered since 27 January 2026 are eligible for retrospective applications. Apply through the SEAI's Individual Energy Upgrade portal.
Yes. Pensioners may qualify for the Housing Aid for Older People Scheme, which provides up to €10,700 for essential repairs and replacements including windows and doors. This is administered by your local authority and is income-based. Additionally, if you receive the Fuel Allowance or Household Benefits Package, you may qualify for the fully funded Warmer Homes Scheme.
The Heat Loss Indicator (HLI) measures how much heat your home loses through its walls, roof, and floor per square metre. For the standalone window grant, your home must have an HLI of 2.3 or lower. A registered BER assessor can calculate this during a BER assessment. If your HLI is too high, you may need to add insulation before applying for the window grant.
You cannot claim both the standalone Individual Energy Upgrade Grant and the One-Stop Shop grant for the same measure. However, you can claim the standalone window grant alongside other individual grants (e.g., for heat pumps or insulation). The 0% VAT on window installation also applies regardless of which grant route you choose.
The total cost of replacing windows in an average 3-bed semi-detached house typically ranges from €8,000 to €15,000 depending on the number of windows, frame material (uPVC, aluminium, or timber), and glazing type. With the SEAI standalone grant of €3,000 for a semi-detached home and 0% VAT, the effective cost is significantly reduced. Get at least two quotes from SEAI-registered contractors to compare prices.
Conclusion
The 2026 standalone window and door grants represent a significant improvement in how Irish homeowners can access energy efficiency funding. With grants of up to €4,000 for windows and €1,600 for doors, combined with 0% VAT and potential annual savings of €100–€400 on energy bills, the payback period for new glazing has never been shorter.
If your home already has adequate insulation (HLI of 2.3 or lower), the standalone route is the simplest path. For homes that need a more comprehensive upgrade, the One-Stop Shop scheme bundles windows with other improvements at a higher grant rate. And for those on qualifying welfare payments, the Warmer Homes Scheme covers the entire cost.