An Energy Performance Certificate is a standard requirement for any property rented or sold in the UK.
A certificate is valid for ten years and provides information on how much it costs to heat the home and details on CO2 emissions.
Furthermore, an EPC rating comes with suggestions for improvement. An EPC assessment is carried out by an accredited assessor and takes around two hours to complete.
What do the ratings mean?
An inspector will give your property a score from 1 to 100, and a rating from G (the lowest) to A will then be attributed.
For example, older properties will likely score a D rating as they’re unlikely to have modern appliances.
How to improve your EPC rating?
There are many ways to improve your rating, from inexpensive DIY jobs to investing in renovations. Here are some suggestions:
1) Insulate cavity walls
Ensure your walls are adequately insulated, and you can increase your EPC rating by up to 10 points.
2) Insulate loft spaces
Heat loss through your roof is a significant issue for most properties. Therefore, sufficient insulation in your loft is essential to improving your EPC rating. Installing new insulation of around 270mm can gain approximately 10 to 15 points. Even simply topping up your existing insulation can earn a few more points.
3) Upgrade your boiler
It may sound daunting and expensive; however, upgrading your boiler can boost your EPC rating by up to 20 points. If your boiler is an older model, upgrading to a modern, energy-efficient one will likely see the most considerable improvements in your rating.
4) Install double or triple-glazed windows
Not only will you benefit from a quieter home, but you can also gain a few points for double-glazed windows.
5) Use renewable energy
Taking advantage of sunlight using solar panels is an excellent way to harness renewable energy and reduce reliance on the grid. Renewable energy may only account for a fraction of how you source energy, but it will help you score approximately 10 points in the EPC rating assessment.
6) Switch to LED light bulbs.
The type of lightbulb you use has a minimal impact on your EPC score. However, it’s still worth the investment to help drive down energy costs and consumption. LED bulbs last longer but are more expensive. However, you could potentially save £35 each year with LED bulbs.
Making these improvements will undoubtedly increase your EPC rating and cause your energy bills to decrease. However, not every suggestion is costly, and others are worth considering as an investment for your home.
Frequently Asked Questions
What are the most effective ways to improve an EPC rating in the UK?
The most effective ways to improve an EPC rating include upgrading insulation (loft, cavity wall, or solid wall), installing a modern energy-efficient boiler or heat pump, improving glazing, and using LED lighting. These measures reduce overall energy demand and improve how efficiently a property retains and uses heat.
How quickly can an EPC rating be improved?
Some improvements, such as LED lighting, draught-proofing, and heating controls, can be implemented quickly and may provide a small improvement almost immediately. Larger upgrades like insulation or heating system replacements take longer but usually have a more significant impact on the overall EPC rating.
Does insulation have a big impact on EPC scores?
Yes, insulation is one of the most important factors in EPC assessments. Properties with poor insulation lose more heat and therefore score lower. Improving loft, wall, or floor insulation can significantly reduce heat loss, which often leads to a noticeable increase in EPC rating.
Can renewable energy systems improve EPC ratings?
Yes, renewable systems such as solar panels or heat pumps can improve EPC ratings by reducing reliance on fossil fuels and lowering carbon emissions. These technologies are often among the highest-impact improvements, although they are typically more expensive than basic efficiency upgrades.
What combination of improvements gives the best EPC results?
The best results usually come from combining insulation upgrades, efficient heating systems, and smaller efficiency measures such as LED lighting and draught-proofing. EPC ratings are based on overall performance, so multiple improvements working together produce stronger results than any single upgrade alone.