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How to Improve an EPC Rating From E to C

As the UK works towards its goal of achieving net zero emissions by 2050, energy conservation is a top priority in the property sector. By 2035, all residential buildings must have a minimum EPC rating of C. But what does this mean? How can we achieve a C rating and how much will it cost? In this article, we will delve into the details of Energy Performance Certificates (EPC) and everything that goes into obtaining them.

The significance of EPC Rating C

To achieve an EPC 'C' rating, a property must score between 69 and 80 points in the Standard Assessment Procedure (SAP). SAP is a government-approved method used by EPC assessors to assess the energy efficiency of a property.

How is Energy Performance measured?

When measuring the energy efficiency, the evaluator evaluates various aspects of the building. They consider things like carbon emissions, wall and roof insulation, window quality, how well the boiler and heating system work, lighting efficiency and whether solar panels are installed.

An Energy Performance Certificate (EPC) is issued to officially document the energy performance of the building. The EPC rating indicates how energy efficient the property is. Generally, a higher EPC rating means the building is more energy efficient, and this can also increase its value.

Can you provide me with the current EPC for my property?

To know your current Energy Performance Certificate (EPC), property owners and landlords can get a report that tells them how well their building is performing. This report will help you understand if your property needs any improvements to get a better rating. The cost of a report can range from £35 to £120 depending on the size and location of your property. EPCs are valid for 10 years.

Methods to improve an EPC rating from E to C

Improving the energy efficiency of your property can increase its appeal to potential buyers or tenants and allow you to sell or rent it for a higher price. Here are six simple methods to increase your energy performance rating (EPC) from E to C.



The transition to LED lights is a fundamental change in the world of lighting. These lights represent a significant advance from the creation of the traditional light bulb. LED lights use 75% less electricity compared to traditional light bulbs and are even more efficient when used at low power levels.

In addition, LED bulbs have a much longer lifespan, lasting up to 25 times longer than conventional bulbs. If you're concerned about a low EPC rating, one of the most effective ways to improve it is to replace old, inefficient light bulbs with energy-efficient LEDs.



No matter how well you protect your home from the weather outside, if you have outdated single glazing, they can let heat out in the winter and in during the summer. If you want to make your home more energy efficient and comfortable, consider upgrading to double or triple glazed windows.

While they may not be cheap upfront, they will save you a lot of money in the long run by reducing your energy costs. It's an investment that will pay off over time and improve your property's rating.



Did you know that a significant amount of heat is lost through poorly insulated lofts? In fact, it can contribute up to 33% of the total heat loss in the house. But there is good news: you can significantly reduce this heat loss by improving the insulation in your attic.

And while you're at it, it's a good idea to check and improve the insulation in your exterior walls as well. The great thing is that upgrading the insulation in your cavity walls is usually simple and affordable. If you have solid walls, the cost of insulating them may be higher, but the long-term benefit is definitely worth it.



A significant amount of energy waste is caused by outdated technologies that were installed when people did not prioritize energy efficiency. Examples of such technologies are old windows, wall insulation and boilers. Boilers in particular have come a long way in terms of energy efficiency.

Modern boilers are much more efficient compared to those installed 15 to 20 years ago. If you want to increase your EPC (Energy Performance Certificate) rating from E to C, one of the best steps you can take is to replace your outdated boiler with a newer, more efficient one.



Upgrade your home with a smart thermostat after installing an energy-saving boiler. The smart thermostat works in sync with your phone's location and adjusts the heat when it senses you're not home.

It can also be set to regulate temperatures in specific rooms at different times. In addition, you can conveniently change settings from anywhere in the world using your smartphone.


Implementing the strategies mentioned in this guide can significantly improve energy performance rating (EPC), moving it from E to C. By focusing on improving insulation, switching to energy-efficient appliances and incorporating renewable energy sources, you can not only reduce its carbon footprint, but also reduce energy costs in the long term.

Prioritizing these improvements not only contributes to a more sustainable future, but also increases the overall value and marketability of your property. With a higher EPC rating, you can enjoy a more comfortable living space while having a positive impact on the environment. Take the necessary steps today to experience the benefits of an improved EPC rating from E to C.