An Energy Performance Certificate (EPC) is based on detailed inspection criteria set by the UK government. The assessment evaluates how energy-efficient a property is and provides a rating from A (most efficient) to G (least efficient).
Below are the key EPC assessment criteria:
🏠 1. Property Construction and Fabric
Wall type (solid, cavity, insulated or not)
Roof structure and insulation
Floor type and insulation
Building age and materials used
Window type (single, double, triple glazing)
🌡️ 2. Heating Systems
Type of boiler or heating system
Fuel type used (gas, electric, oil, renewable)
Age and efficiency of the heating system
Presence of heating controls like thermostats, timers, TRVs
💡 3. Lighting
Number and type of light bulbs
Use of energy-efficient (LED or CFL) lighting fixtures
🌬️ 4. Ventilation and Air Tightness
Use of mechanical ventilation systems
Presence of draught-proofing
Natural ventilation (e.g., trickle vents)
☀️ 5. Renewable Energy Technologies
Solar panels (PV) for electricity
Solar thermal systems for hot water
Heat pumps, biomass boilers, or other renewables
📈 6. Hot Water Systems
Type of water heating system
Cylinder insulation and efficiency
Control systems for hot water
📊 7. Energy Efficiency Measures
Insulation upgrades (loft, cavity wall)
Glazing improvements
Smart thermostats or controls
📝 Final EPC Report Includes:
Current and potential EPC ratings
Recommendations for improvements
Estimated energy use and CO₂ emissions
Estimated annual energy costs
📍 Need a Certified EPC Assessment?
Whether you’re selling, letting, or just improving your energy performance, we’re here to help.
👉 Learn more about Residential EPCs
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