An upcoming EPC assessment can feel stressful, but small, strategic improvements can make a noticeable difference to your home’s energy efficiency rating. Even minor tweaks are visible to an assessor and can elevate your score without major renovations or high costs.

Before you start, you can book your assessment through our EPC Booking Page.

1. Seal Draughts Around Doors and Windows

Draughts are one of the quickest things an assessor notices.

Quick fixes:

  • Apply self-adhesive draught strips to doors and windows

  • Use silicone sealant for gaps

  • Add chimney balloons or fireplace covers for unused chimneys

Reducing air leakage improves heat retention and presents a well-maintained property.

2. Switch to Energy-Efficient LED Lighting

Lighting efficiency is a simple way to boost EPC scores.

Actions before inspection:

  • Replace incandescent and halogen bulbs with LEDs

  • Ensure all bulbs are functional

  • Maintain consistent lighting throughout rooms

LED lighting demonstrates modern, low-energy standards.

3. Optimise Heating Systems

Your boiler and heating setup are heavily weighted in EPC calculations.

Easy pre-assessment adjustments:

  • Set boiler flow temperature between 55–60°C

  • Check that thermostats and TRVs are functional

  • Enable eco mode if available

Even small optimisations signal an efficient heating system.

4. Bleed Radiators

Cold spots indicate poor heat distribution and can reduce your score.

Simple steps:

  • Bleed all radiators to remove trapped air

  • Ensure even heating across rooms

  • Test the system before the assessor arrives

A properly functioning heating system leaves a strong positive impression.

5. Add Reflective Panels Behind Radiators

Low-cost reflective panels help push heat into the room instead of losing it through walls.

  • Quick installation

  • Immediate improvement in thermal efficiency

  • Seen as a proactive energy-saving measure by assessors

6. Insulate Exposed Pipes and Loft Hatches

Even minor insulation improvements make a big difference.

  • Wrap exposed hot water pipes in foam lagging

  • Seal and insulate the loft hatch

  • Ensure continuous insulation wherever possible

These simple fixes reduce heat loss and improve EPC scores.

7. Gather Documentation for Past Upgrades

Assessors must assume the lowest rating without proof of improvements.

  • Loft insulation depth

  • Wall insulation certificates

  • Boiler installation papers

  • Window or double glazing documentation

For guidance, visit our About Us – EPC Company London page.

8. Ensure Easy Access for Assessors

Blocked access can reduce your rating unnecessarily.

  • Clear loft access

  • Open boiler cupboards and cylinder spaces

  • Ensure meters and heating controls are visible

Professional assessment is smoother when everything is accessible, which reduces errors and default assumptions.

Boost Your EPC Quickly

Even simple, low-cost changes can instantly improve your EPC score. These tweaks are ideal for homeowners, landlords, or anyone preparing for an upcoming inspection.