Windows and Doors Grant in Ireland – What You Need to Know
- 7 days ago
- 4 min read
Updated: 3 days ago
A new Windows and Doors Grant introduced by the Sustainable Energy Authority of Ireland (SEAI) allows homeowners to receive financial support for upgrading to energy-efficient windows and external doors without committing to a full deep retrofit. The scheme, launched in 2026, forms part of Ireland’s broader residential energy upgrade strategy and aims to improve the thermal performance of older homes.
Homeowners can receive up to €5,600 in grant funding depending on property type and the number of doors replaced.
A Significant Change to Previous Schemes
Under earlier SEAI retrofit programmes, grants for windows and doors were generally available only as part of larger “deep retrofit” projects. The new scheme introduces a standalone option, enabling homeowners to upgrade glazing and doors independently, provided certain performance criteria are met.
This change makes fabric upgrades more accessible for those wishing to improve comfort, reduce heat loss and lower energy bills without undertaking a full renovation.
Windows and Doors Grant Amounts Explained
The grant amount for windows and doors depends on the type of dwelling:
Windows:
Apartment: €1,500
Mid-Terrace: €1,800
Semi-Detached / End of Terrace: €3,000
Detached House: €4,000
External Doors:
€800 per external door
Maximum of two doors covered
For example, a detached home replacing all eligible windows and two external doors could receive up to €5,600 in support.
“Being SEAI-registered means homeowners can trust that both our products and our installation standards meet the strict technical requirements of the national energy upgrade scheme. Compliance isn’t optional — it’s essential.”
— Voytek Lange, Owner, Perfect Home
Who Is Eligible?
To qualify, several conditions must be met:
1. Property Requirements
The home must be built and occupied before 2011.
The applicant must be the property owner.
The property must have a valid MPRN (electricity meter number).
Your attic and wall insulation is 'Good' or 'Very Good' - according to your Building Energy Report (BER).
2. Replacement Criteria
The grant applies only to the replacement of existing inefficient windows and external doors. New units must meet SEAI’s required thermal performance standards, typically with U-values of 1.4 W/m²K or better.
3. Energy Performance After Works
Once the installation is complete, the home must achieve one of the following:
A Heat Loss Indicator (HLI) of 2.3 W/m²K or better or
A BER advisory rating indicating “Good” or “Very Good” levels of attic and wall insulation.
This requirement ensures that the upgrade delivers meaningful energy performance improvements rather than cosmetic replacement.
Step-by-Step: How the Grant Process Works
For homeowners working directly with a registered installer (rather than through a One Stop Shop provider), the process typically follows these steps:
Step 1 – Contact a Registered Supplier / Installer
The first step is to contact an SEAI-registered window and door installer (e.g. Perfect Home Windows & Doors).
This is essential because:
You will need the installer’s SEAI Unique Contractor Number when completing your grant application.
The installer will confirm whether your chosen products meet SEAI performance requirements.
You will receive a detailed quotation outlining specifications and costs.
Importantly, homeowners should have a clear understanding of the total project cost before applying for the grant. The SEAI grant is a fixed contribution — it does not cover the full cost — so knowing the financial commitment upfront is critical.
Step 2 – Review Energy Performance Requirements
Before applying, ensure that your home can meet SEAI’s post-works performance criteria. Hire a BER (Building Energy Rating) assessor if needed. This may require:
Reviewing your existing BER
Checking attic and wall insulation levels,
Confirming that replacing windows and doors alone will achieve the required Heat Loss Indicator (HLI) target.
In some cases, additional insulation upgrades may be necessary to qualify.
Step 3 – Apply for the Grant (Before Any Work Begins)
Once you have:
A confirmed quotation,
The installer’s SEAI Unique Contractor Number,
Confidence that the works will meet performance standards,
you can submit your application to SEAI. No work may begin before grant approval is issued.Starting installation before receiving formal approval will invalidate eligibility.
Step 4 – Installation by the Registered Contractor
After grant approval, the SEAI-registered installer carries out the works in accordance with scheme requirements and technical standards. DIY installation or use of a non-registered contractor does not qualify under the grant scheme.
Step 5 – Post-Works BER Assessment
Once installation is complete, a qualified BER assessor carries out a post-works assessment to confirm the improved energy performance of the property.
This documentation is required to trigger grant payment.
Step 6 – Submit Documentation & Receive Grant Payment
Following submission and approval of all required paperwork, SEAI pays the grant directly to the homeowner.
Important Points to Consider
The grant can only be claimed once for windows.
A maximum of two external doors are covered.
Works cannot be backdated.
Windows or doors in extensions built after 2011 are not eligible.
Some properties may require insulation upgrades before meeting the required performance threshold.
Should I replace my Windows and Doors?
Windows and doors account for a significant portion of heat loss in many Irish homes, particularly those built before modern building regulations. By introducing a standalone support scheme, SEAI has made it easier for homeowners to improve comfort, reduce draughts and enhance overall energy efficiency without undertaking major structural renovation.
Working with a Registered Installer
To qualify for the grant, homeowners must use an SEAI-registered installer. Companies such as Perfect Home, which is an SEAI-registered and approved manufacturer and installer of energy-efficient windows and doors, can supply compliant products and carry out installations in accordance with the scheme requirements.
Upgrade Your Home with Perfect Home Windows & Doors
Investing in new PVC windows and doors is one of the best ways to improve your home’s comfort and efficiency. With our expert team, the process is smooth, hassle-free, and tailored to your needs.
About Perfect Home
Your door & window service in Ireland
Perfect Home Windows & Doors is a leading service company for window repairs, window replacement, door repairs, door replacement and uPVC spraying in Ireland. Our specialists are repairing and replacing uPVC, aluminium and wooden windows as well as all types of doors. Our service includes installing new doors and windows as well as fixing hinges, handles, glass, seals and vents of windows, skylights and doors in county Carlow, Clare, Cork, Dublin, Galway, Kerry, Kildare, Kilkenny, Laois, Limerick, Mayo, Offaly, Roscommon, Sligo, Tipperary, Waterford, Wexford and Wicklow.
Please do not hesitate to contact us if you have any further questions.
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