When your property undergoes an Energy Performance Certificate (EPC) assessment, a certified assessor evaluates numerous aspects of the home to determine energy efficiency. Understanding what assessors focus on helps homeowners and landlords prepare for the assessment, improve ratings, and reduce costs.

Learn more about our professional EPC services on our About Us page.

1. Insulation Quality

Assessors check the insulation in your home, including:

  • Loft insulation thickness and condition

  • Wall insulation (cavity or solid walls)

  • Floor insulation, especially in older properties

Proper insulation reduces heat loss and is a major factor in EPC scores.

2. Heating Systems

Heating systems are closely inspected:

  • Boiler efficiency and age

  • Central heating system layout

  • Thermostatic radiator valves (TRVs) and smart thermostats

Efficient heating systems significantly improve energy efficiency and EPC ratings.

3. Windows and Doors

Assessors look at windows and doors for:

  • Type of glazing (double, triple, or single)

  • Frame material and condition

  • Draught-proofing and sealing

Energy-efficient windows prevent heat loss and improve EPC points.

4. Hot Water Systems

  • Tank type and insulation

  • Pipework insulation

  • Heating source efficiency (e.g., boilers or heat pumps)

Properly insulated hot water systems reduce wasted energy.

5. Ventilation and Air Leakage

Assessors identify air leaks and ventilation issues:

  • Gaps around doors and windows

  • Loft hatches and skirting boards

  • Ventilation systems, including extractor fans or MVHR

Minimising leaks helps maintain internal temperature efficiently.

6. Renewable Energy Features

If your property has renewable energy systems, assessors consider:

  • Solar panels or solar water heating

  • Heat pumps or hybrid systems

  • Battery storage or energy-saving technologies

Renewables reduce energy consumption and improve EPC ratings.

7. Building Fabric and Thermal Bridges

Assessors check for thermal bridges:

  • Wall junctions, floor edges, and roof connections

  • Structural elements that allow heat to escape

  • Overall building integrity and insulation coverage

Eliminating thermal bridges can improve EPC scores significantly.

Why Professional Assessment Matters

A certified Domestic Energy Assessor (DEA) can:

  • Provide accurate and compliant EPC ratings

  • Recommend practical improvements for higher ratings

  • Assist landlords and homeowners in meeting legal requirements

Book a professional assessment via our Booking Page.

Contact Us for EPC Guidance

Want to know how your home will perform in an EPC assessment?
Reach out through our Contact Page for expert advice and support.

Email :info@epcrate.co.uk

Phone:020 34884142