If you’ve booked an Energy Performance Certificate (EPC) for your home, you might be wondering what actually happens during the assessment. Understanding the process can help you prepare and make the most of your appointment.
Your assessor will begin by confirming the property details and taking an external look at your home. They’ll note the type of building, its age, and the materials used — all of which affect how efficiently your home retains heat.
Next, the assessor will move through the property, recording details about:
Heating systems (boiler, radiators, and controls)
Windows and glazing types
Insulation in the loft or walls (where visible)
Lighting types (energy-efficient bulbs or not)
They’ll take photos and measurements to support their findings — these are for evidence only and not shared publicly.
After the inspection, the data is entered into government-approved EPC software, which calculates your home’s energy rating from A (most efficient) to G (least efficient).
You’ll receive a digital EPC certificate showing your rating and tailored recommendations for improving it — such as upgrading your boiler, adding insulation, or switching to LED lighting.
At Mersey Green EPCs, we don’t just issue certificates — we help you understand them. We’ll explain what your results mean, suggest cost-effective upgrades, and guide you on how to boost your property’s rating before selling or renting.
Book your domestic energy assessment today with Mersey Green EPCs — your local experts covering Liverpool, Wirral, Sefton, and across the North West.