Energy Performance Certificates (EPCs) are crucial for evaluating a building’s energy efficiency. However, properties with split-level or multi-storey designs present unique challenges that can affect EPC scores. Understanding these challenges helps homeowners, developers, and EPC assessors identify areas for improvement and maintain compliance with energy regulations.
1. Complexity in Heat Distribution
Split-level and multi-storey homes often have uneven heating and cooling requirements due to varying ceiling heights and room volumes. This can lead to:
Uneven temperatures across different levels
Higher energy consumption in under-insulated zones
Difficulty in accurately modeling energy efficiency during EPC assessments
2. Increased Surface Area
Multi-storey properties naturally have more external walls, roofs, and floor interfaces. These additional surfaces can result in:
Greater heat loss or gain
Challenges in maintaining consistent insulation quality
Complications in identifying thermal bridges that affect EPC scores
3. Staircases and Vertical Spaces
Open staircases and atriums create vertical airflow that can:
Increase heat loss through convection
Affect the performance of heating, ventilation, and cooling systems
Require additional energy calculations for EPC accuracy
4. Loft and Basement Integration
Many split-level or multi-storey homes include lofts or basements that are sometimes poorly insulated. This can lead to:
Underestimation of energy needs if these spaces are unaccounted for
Reduced EPC ratings due to uninsulated or underutilized areas
5. Recommendations for EPC Optimization
Professional Assessment: Engage certified EPC assessors familiar with complex layouts to ensure accurate ratings.
Insulation Improvements: Enhance wall, roof, and floor insulation, especially in transition zones between levels.
Zoning and HVAC Adjustments: Consider multi-zone heating and cooling systems to optimize energy efficiency.
Monitoring and Upgrades: Regularly check and upgrade energy systems to maintain performance over time.
For expert EPC evaluations of split-level or multi-storey properties, visit our Services page, book an assessment, or contact us for personalized guidance.
Conclusion
Split-level and multi-storey designs introduce specific challenges that can impact EPC scores. With careful planning, targeted insulation, and professional EPC assessment, homeowners can optimize energy efficiency and maintain compliance. At EPCRate, we specialize in providing accurate EPC assessments tailored to complex properties, ensuring reliable and actionable insights.
