Even well-maintained homes can have hidden energy inefficiencies that drag down their Energy Performance Certificate (EPC) rating. These “silent energy losers” often go unnoticed by homeowners, but addressing them can improve your EPC, reduce energy bills, and enhance comfort.

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1. Loft and Roof Inefficiencies

  • Poor or uneven loft insulation allows heat to escape.

  • Recessed downlights or loft hatches without insulation can create gaps.

  • Roof vents or poorly sealed skylights contribute to heat loss.

Adding or upgrading insulation in these areas is one of the fastest ways to improve your EPC.

2. Draughty Windows and Doors

Even minor gaps around windows and doors can significantly affect energy performance:

  • Worn weatherstripping or seals

  • Improperly fitted window frames

  • Small cracks around doors and skirting

Sealing these areas is low-cost and effective for boosting your EPC rating.

3. Inefficient Heating Systems and Controls

  • Old boilers or water heaters consume more energy.

  • Missing thermostatic radiator valves (TRVs) reduce efficiency.

  • Unbalanced heating systems cause some rooms to overheat while others stay cold.

Smart thermostats and routine maintenance can dramatically improve efficiency.

4. Hidden Thermal Bridges

  • Structural elements like steel beams, balconies, and wall junctions allow heat to bypass insulation.

  • Even modern constructions can suffer from these issues.

Professional EPC assessors can identify and recommend solutions to reduce thermal bridging.

5. Insufficient Pipework or Tank Insulation

  • Uninsulated hot water tanks and pipes lose significant energy.

  • Lofts, basements, and crawl spaces are common culprits.

Adding foam or lagging is affordable and effective.

6. Ventilation and Extractor Leaks

  • Ductwork from MVHR systems or extractor fans may be poorly insulated.

  • Leaks in ventilation reduce energy efficiency and increase EPC heat loss.

Why Professional EPC Assessment Matters

A certified Domestic Energy Assessor (DEA) can detect these silent energy losers and provide:

  • Accurate EPC ratings

  • Actionable recommendations for improvement

  • Guidance for compliance when selling or renting

Book your professional assessment via our Booking Page.

Contact Us for Expert EPC Advice

Need help identifying hidden energy losses in your home?
Reach out through our Contact Page for fast, expert guidance.

Email:info@epcrate.co.uk

Phone:020 34884142