Heating and controls
Heating type, efficiency, controls and classification can strongly influence the rating, especially in electrically heated properties.
EPC rating factors
What Affects EPC Ratings?
EPC ratings are influenced by the whole property, not one single measure. Heating, hot water, insulation, windows, solar and evidence can all affect the result.
Hot water and lighting
Hot water systems, cylinder insulation, controls and fixed lighting can support the EPC score, although they may not always be the largest driver.
Insulation and windows
Wall, roof, loft and floor insulation reduce modelled heat loss. Glazing can help, but its impact depends on frame type, U-value, g-value and evidence.
Solar and evidence
Solar PV may improve the EPC, especially where electricity use is important. Evidence such as MCS certificates, specifications and invoices may be required.
Next step
Need a property-specific EPC C plan?
Make My Home Energy Efficient can review your EPC, model improvement scenarios, advise on the best route to EPC C and arrange suitable improvement measures through approved installers. Any outcome remains subject to evidence, current RdSAP methodology and final EPC assessment.