Improving your home’s Energy Performance Certificate (EPC) score doesn’t always require large renovations. In many cases, targeted, cost-effective upgrades can make a significant difference. Whether you’re a homeowner preparing to sell, a landlord meeting legal requirements, or simply aiming to cut energy bills, these simple improvements can instantly boost your EPC rating.

1. Upgrade to Energy-Efficient Lighting

Lighting is one of the easiest and cheapest EPC boosts. Switching to LED bulbs:

  • Cuts electricity consumption

  • Shows assessors your home is energy conscious

  • Provides an instant improvement to your EPC score

For professional EPC guidance, visit our EPC Assessors London page.

2. Improve Loft and Wall Insulation

A poorly insulated home loses heat rapidly, leading to higher bills and lower ratings. Simple upgrades include:

  • Adding loft insulation to the recommended 270mm

  • Filling cavity walls

  • Insulating floors or inaccessible spaces

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3. Install Smart Heating Controls

Even a modern boiler can perform poorly without smart controls. These systems:

  • Allow zoned heating

  • Prevent heat wastage

  • Increase EPC rating points

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4. Add a Hot Water Cylinder Jacket

A simple and inexpensive change, insulating your hot water tank:

  • Reduces heat loss

  • Slashes energy bills

  • Improves EPC performance

Check estimated EPC improvement costs on our Pricing page.

5. Draught-Proof Windows and Doors

Stopping warm air from escaping is one of the highest-impact upgrades you can make. Seal gaps around:

  • Window frames

  • Door frames

  • Pipes and floorboards

  • Loft hatches

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6. Upgrade to Energy-Efficient Appliances

Even if your EPC doesn’t rate every appliance, a home fitted with A-rated equipment:

  • Reduces overall energy consumption

  • Supports a higher score

  • Shows long-term efficiency improvements

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7. Consider Partial Renewable Energy Upgrades

Even minor renewable installations make a difference, such as:

  • Solar battery storage

  • Solar water heating

  • Air-source heat pumps (even hybrid setups)

Learn more about renewable-friendly EPC improvements on our Services page.

Final Thoughts

You don’t need major renovations to see major EPC gains. Small upgrades like LED bulbs, insulation improvements, smart heating controls, and draught-proofing can dramatically increase your rating while reducing energy bills.

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