Major Changes to BER Ratings in Ireland (From 2026) – What Homeowners Need to Know
- Mihai
- 1 day ago
- 3 min read
The Building Energy Rating (BER) system in Ireland is undergoing one of its most significant updates in recent years. These changes will directly impact how BER certificates (BER certs) are calculated, displayed, and interpreted for both homeowners and BER assessors.
This article explains what is changing, when it happens, and what it means for domestic BER assessments in Dublin and across Ireland.
📅 When Do the BER Changes Take Effect?
A simplified BER rating system will be introduced from 24 May 2026 for all domestic and non-domestic buildings in Ireland.
From this date:
All new BER certificates will use the updated system
Existing BER certificates remain valid for 10 years
The underlying methodology and compliance rules remain largely unchanged
🔢 What Is Changing in the BER Rating System?
The biggest change is the simplification of the BER scale.
Current system (before 2026):
A1 to G with multiple subcategories (A1, A2, B1, B2, etc.)
15 rating bands in total
New system (from 2026):
Simplified scale: A0, A, B, C, D, E, F, G
All subcategories removed
A new A0 rating introduced for zero-fossil-fuel buildings
This makes BER certificates easier to understand and more consistent across the EU.
🏡 What Is the New A0 BER Rating?
The A0 rating is a new top-tier classification introduced for:
Highly energy-efficient homes
Buildings that operate without fossil fuels
Ultra-low carbon residential properties
This reflects Ireland’s move toward low-carbon and nearly zero-energy buildings (NZEB) standards.
📄 What Changes on a BER Certificate?
The updated BER certificate (BER cert) will include:
Simplified A0–G rating scale
More detailed energy performance data
Carbon emissions (Global Warming Potential – GWP)
Renewable energy contribution
QR code linking to building energy data and upgrade advice
This means homeowners will get more transparent and detailed energy insights.
👷 What This Means for BER Assessors
For a BER assessor, the core calculation principles remain the same:
DEAP methodology is still used
Fabric, ventilation, and system inputs remain critical
HLI (Heat Loss Indicator) and energy performance still form the basis of the rating
However, the presentation of results will change significantly, making BER certificates more user-friendly and aligned with EU standards.
📍 BER Assessments Across Dublin and Surrounding Areas
We provide BER assessments and BER certificates across Dublin and surrounding areas including:
Malahide, Swords, Portmarnock, Donabate, Lusk, Rush, Skerries, Balbriggan, Howth, Clontarf, Raheny, Kilbarrack, Santry, Finglas, Glasnevin, Drumcondra, Ballymun, Tallaght, Dundrum, Rathfarnham, Blackrock, Dún Laoghaire, Sandyford, Stillorgan, Clonskeagh, Cabinteely, Shankill, Dalkey, and many more locations across Dublin, Ireland.
🧠 Final Thoughts
The upcoming BER changes represent a major step toward:
Simplified energy rating communication
Better alignment with EU energy standards
Improved transparency for homeowners and buyers
Stronger focus on low-carbon buildings
For homeowners, BER certs will become easier to read and more informative, while for professionals, the focus remains on accurate BER assessment and compliance.
📞 Need a BER Assessment for Your Property?
At MTS DNC Energy Consultants Limited, we help homeowners and developers understand and improve their building’s energy performance by providing:
✔ Accurate BER ratings
✔ Guidance tailored to your building type
✔ Cost-effective strategies to meet regulations
✔ Recommendations for long-term efficiency
👉 Contact us today for expert advice or to schedule your BER assessment.
For further inquiries or assistance, feel free to contact us.
Disclaimer:
The information provided in these posts is for informational purposes only and should not be considered design advice, specifications, or a calculation template. We assume no responsibility or liability for the use of the information presented. For professional advice or design services, please contact us via our contact form.
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