The biggest impacts on an Energy Performance Certificate (EPC) rating are the energy efficiency and insulation features of a property. Below are the top factors that significantly affect your EPC score:
🏡 1. Insulation Quality
Loft insulation and wall insulation (especially cavity or solid wall insulation) dramatically improve thermal efficiency.
Properties without proper insulation lose heat faster, leading to lower EPC ratings.
🔥 2. Heating System Efficiency
Boiler type and efficiency play a huge role. Condensing boilers (especially modern A-rated combi boilers) boost your EPC score.
Old, inefficient boilers or electric storage heaters lower the score.
🪟 3. Windows and Doors (Glazing)
Double or triple glazing helps retain heat.
Single-glazed windows or poor seals can lead to heat loss, reducing your EPC rating.
💡 4. Lighting
Low-energy lighting such as LED bulbs is a quick and affordable way to increase your score.
Halogen or incandescent bulbs negatively affect your EPC.
☀️ 5. Renewable Energy Sources
Solar panels, ground source heat pumps, or solar water heating systems greatly improve your EPC rating.
Properties with no renewable features miss out on significant scoring potential.
🚪 6. Building Materials and Structure
Newer builds often score higher due to modern building regulations.
Older properties may lack insulation or have outdated building materials.
📈 Boost Your EPC Today
If you’re looking to improve your EPC rating in London or Greater London, we can help:
📞 Call: +44 7741 812 864
📬 Email: info@urgentepc.co.uk
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