25/03/2025
What your EPC rating (A-G) could mean
what measures are present in the property? What improvements could be made?
EPC Rating A: what it means
An EPC Rating A is the highest rating, reflecting exceptional energy efficiency. Achieving this rating often requires a combination of advanced insulation, renewable energy sources, and high-efficiency systems.
EPC Grade A homes often have:
Solar panels, advanced insulation (walls, roof, floor)
Triple glazing, air source or ground source heat pumps
Energy-efficient lighting, mechanical ventilation with heat recovery (MVHR), High-performance heating systems.
EPC Rating B meaning
An EPC Rating B indicates a home with very high energy efficiency. This rating can be achieved with a mix of high-efficiency measures.
EPC rated B homes can require:
Solar panels, improved insulation (walls, loft, and possibly floors)
Double or triple glazing, a modern
Efficient boiler or heat pump, smart thermostats, and LED lighting.
EPC Rating C meaning
An EPC Rating C is common in modern homes or those that have undergone partial energy upgrades.
What EPC C rating means & how to achieve it:
Loft and cavity wall insulation
Efficient glazing (double glazing)
New or upgraded boiler, basic draft-proofing
LED lighting.
EPC Rating D meaning:
An EPC Rating D is typical for older homes that have had minimal energy upgrades.
A rating of D requires moderate improvements.
Cavity wall insulation
Loft insulation
Upgrading old boiler
Draft-proofing
EPC Rating E: what this grade means
An EPC Rating E is often found in older homes that have poor insulation and outdated heating systems but still meet the minimum energy efficiency standards for rented properties.
Homes rated E likely need:
Basic loft insulation
Replacing extremely old boilers
Minimal draft-proofing.
EPC Rating F meaning & improvements
An EPC Rating F reflects a poorly performing home in terms of energy efficiency, likely to have little insulation and inefficient heating.
Upgrades required:
Some minimal loft insulation
Draft-proofing
Upgrading very old systems
EPC Rating G
An EPC Rating G is the lowest rating and indicates a home with very poor energy efficiency. This may include homes without proper insulation, old single glazing, and very inefficient heating systems.